<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:cb267e3c-0695-407e-bed1-09a02a55eba3,g:9259bf54-e939-465b-9c07-c54ad2abbf8a-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.jabil.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="jbl-20240229.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_4d44a0b5-dad5-4f83-bc29-052d10a940ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_edac1c05-f1ea-4961-ac73-1ec29fa2bc82" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_4d44a0b5-dad5-4f83-bc29-052d10a940ee" xlink:to="loc_us-gaap_StatementTable_edac1c05-f1ea-4961-ac73-1ec29fa2bc82" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_edac1c05-f1ea-4961-ac73-1ec29fa2bc82" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3" xlink:to="loc_us-gaap_EquityComponentDomain_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_a7f885a7-9d3a-4bb9-8f2d-7137096f6ce3" xlink:to="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5dfbc608-5a00-4aea-bb7e-0213080d3969" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_CommonStockMember_5dfbc608-5a00-4aea-bb7e-0213080d3969" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_20cfb4a7-d557-408a-a6a4-28fdfb33dd76" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_20cfb4a7-d557-408a-a6a4-28fdfb33dd76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_91442198-e8ec-49f1-b3d5-279908bb9a1b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_RetainedEarningsMember_91442198-e8ec-49f1-b3d5-279908bb9a1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_59d92394-09f3-4d5e-9f88-071c7f284273" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_59d92394-09f3-4d5e-9f88-071c7f284273" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_1c0acec7-7d48-42e4-8f20-68cac7537e33" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_TreasuryStockCommonMember_1c0acec7-7d48-42e4-8f20-68cac7537e33" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_5bb6619b-dfba-4458-ada0-5d355545e307" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_f7995684-7564-404c-9b50-246e6ace2fca" xlink:to="loc_us-gaap_NoncontrollingInterestMember_5bb6619b-dfba-4458-ada0-5d355545e307" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4d44a0b5-dad5-4f83-bc29-052d10a940ee" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7e6a5dc8-3b45-4363-8c55-e62942d6338c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7e6a5dc8-3b45-4363-8c55-e62942d6338c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_0535094b-7272-47df-8187-bd3927251fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_0535094b-7272-47df-8187-bd3927251fd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries_39cfe916-ca85-4a1e-9ff6-3343739184c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries_39cfe916-ca85-4a1e-9ff6-3343739184c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_2dfb3d2c-6529-4d9d-bfa1-29207b12f699" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_2dfb3d2c-6529-4d9d-bfa1-29207b12f699" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_8204d9e7-800d-4749-a4bb-d061725bb72c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_8204d9e7-800d-4749-a4bb-d061725bb72c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_b778e6c4-2208-4cd4-835d-b1984104e080" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_DividendsCommonStockCash_b778e6c4-2208-4cd4-835d-b1984104e080" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_4c3a7eee-9169-4301-a771-801bce6ac468" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_ProfitLoss_4c3a7eee-9169-4301-a771-801bce6ac468" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_50c85ab9-b985-4461-a642-f2eb57db47ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_50c85ab9-b985-4461-a642-f2eb57db47ec" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_472ebd8c-a3de-4f0a-8c8d-6e776c9f708f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_472ebd8c-a3de-4f0a-8c8d-6e776c9f708f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TreasuryStockValueAcquiredExciseTax_76e98062-a691-49cf-9603-6a5f214d4ce8" xlink:href="jbl-20240229.xsd#jbl_TreasuryStockValueAcquiredExciseTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_879f5936-54af-41ce-b0d3-3af7cadb4bb4" xlink:to="loc_jbl_TreasuryStockValueAcquiredExciseTax_76e98062-a691-49cf-9603-6a5f214d4ce8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_c17f673b-7fe7-4506-9953-f5e0b015f306" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/TradeAccountsReceivableSaleProgramsAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#TradeAccountsReceivableSaleProgramsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/TradeAccountsReceivableSaleProgramsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_977e0147-cd86-4ba2-8586-e0d97119a726" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_954cfbdc-f7e2-4c60-834a-f37321d0368e" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_977e0147-cd86-4ba2-8586-e0d97119a726" xlink:to="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_954cfbdc-f7e2-4c60-834a-f37321d0368e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_63d77906-f75f-47e1-ad7c-be3d707466e2" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_954cfbdc-f7e2-4c60-834a-f37321d0368e" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_63d77906-f75f-47e1-ad7c-be3d707466e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_63d77906-f75f-47e1-ad7c-be3d707466e2_default" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_63d77906-f75f-47e1-ad7c-be3d707466e2" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_63d77906-f75f-47e1-ad7c-be3d707466e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_abf74d01-27c3-42c9-b79f-ce3026d11df7" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_63d77906-f75f-47e1-ad7c-be3d707466e2" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_abf74d01-27c3-42c9-b79f-ce3026d11df7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:href="jbl-20240229.xsd#jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_abf74d01-27c3-42c9-b79f-ce3026d11df7" xlink:to="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SaleOfAccountsReceivableDenominatedInCHFMember_3ee35ba1-f1a4-4237-b3d0-76a5b427d423" xlink:href="jbl-20240229.xsd#jbl_SaleOfAccountsReceivableDenominatedInCHFMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:to="loc_jbl_SaleOfAccountsReceivableDenominatedInCHFMember_3ee35ba1-f1a4-4237-b3d0-76a5b427d423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SaleOfAccountsReceivableDenominatedInINRMember_506c035b-67d2-4627-8ccf-d423340d14c8" xlink:href="jbl-20240229.xsd#jbl_SaleOfAccountsReceivableDenominatedInINRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:to="loc_jbl_SaleOfAccountsReceivableDenominatedInINRMember_506c035b-67d2-4627-8ccf-d423340d14c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SaleOfAccountsReceivableDenominatedInChineseYuanMember_44a1b0ca-fb41-4910-a8d0-3aa04383b3d8" xlink:href="jbl-20240229.xsd#jbl_SaleOfAccountsReceivableDenominatedInChineseYuanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:to="loc_jbl_SaleOfAccountsReceivableDenominatedInChineseYuanMember_44a1b0ca-fb41-4910-a8d0-3aa04383b3d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SevenHundredMillionDollarTradeAccountsReceivableSaleProgramDueDecember52025Member_497e314e-269b-4ccb-a8cf-c4037575e479" xlink:href="jbl-20240229.xsd#jbl_SevenHundredMillionDollarTradeAccountsReceivableSaleProgramDueDecember52025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:to="loc_jbl_SevenHundredMillionDollarTradeAccountsReceivableSaleProgramDueDecember52025Member_497e314e-269b-4ccb-a8cf-c4037575e479" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SaleOfAccountsReceivableNewMember_a533c041-eed1-41be-b3ab-8895b46a01a6" xlink:href="jbl-20240229.xsd#jbl_SaleOfAccountsReceivableNewMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SaleOfAccountsReceivableDenominatedInUSDollarsMember_ac20e834-73a6-4baf-adbd-02cb125941c5" xlink:to="loc_jbl_SaleOfAccountsReceivableNewMember_a533c041-eed1-41be-b3ab-8895b46a01a6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_954cfbdc-f7e2-4c60-834a-f37321d0368e" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_67f7020f-1280-47c7-84e5-d45af6107961" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_ec7058e8-25ff-4fd2-8902-e2e8b16fdd67" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_67f7020f-1280-47c7-84e5-d45af6107961" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_a879a986-d8e3-4cd0-a57a-94d391d242e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_67f7020f-1280-47c7-84e5-d45af6107961" xlink:to="loc_us-gaap_SubsequentEventMember_a879a986-d8e3-4cd0-a57a-94d391d242e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_NetCashProceedsAvailableAtAnyOneTimeUnderSalesProgram_0e199c44-04ce-4cfc-8e30-156d862ddc70" xlink:href="jbl-20240229.xsd#jbl_NetCashProceedsAvailableAtAnyOneTimeUnderSalesProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_977e0147-cd86-4ba2-8586-e0d97119a726" xlink:to="loc_jbl_NetCashProceedsAvailableAtAnyOneTimeUnderSalesProgram_0e199c44-04ce-4cfc-8e30-156d862ddc70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_NumberOfTradeAccountsReceivableSaleProgram_a9bcabb7-cdca-4c27-b4e6-2ef495da84a4" xlink:href="jbl-20240229.xsd#jbl_NumberOfTradeAccountsReceivableSaleProgram"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_977e0147-cd86-4ba2-8586-e0d97119a726" xlink:to="loc_jbl_NumberOfTradeAccountsReceivableSaleProgram_a9bcabb7-cdca-4c27-b4e6-2ef495da84a4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/TradeAccountsReceivableSaleProgramsTradeAccountsReceivableSaleProgramsAmountsRecognizedDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#TradeAccountsReceivableSaleProgramsTradeAccountsReceivableSaleProgramsAmountsRecognizedDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/TradeAccountsReceivableSaleProgramsTradeAccountsReceivableSaleProgramsAmountsRecognizedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_ea8eb34c-154c-41a0-8579-f9030f5fd3d9" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_784345a4-ef4c-4653-90b9-bb9e9961d763" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_ea8eb34c-154c-41a0-8579-f9030f5fd3d9" xlink:to="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_784345a4-ef4c-4653-90b9-bb9e9961d763" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ae9e25e6-756d-458a-814b-9a758a5a46d6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_784345a4-ef4c-4653-90b9-bb9e9961d763" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ae9e25e6-756d-458a-814b-9a758a5a46d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_ae9e25e6-756d-458a-814b-9a758a5a46d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ae9e25e6-756d-458a-814b-9a758a5a46d6" xlink:to="loc_us-gaap_ReceivableTypeDomain_ae9e25e6-756d-458a-814b-9a758a5a46d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_b1c02d31-9c61-4446-b531-d105e53683a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ae9e25e6-756d-458a-814b-9a758a5a46d6" xlink:to="loc_us-gaap_ReceivableTypeDomain_b1c02d31-9c61-4446-b531-d105e53683a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSaleProgramsMember_98e482e7-9ab0-4a89-a009-31402e74ca34" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSaleProgramsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_b1c02d31-9c61-4446-b531-d105e53683a9" xlink:to="loc_jbl_TradeAccountsReceivableSaleProgramsMember_98e482e7-9ab0-4a89-a009-31402e74ca34" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountReceivableSold_6d37e755-b1da-4f64-9e85-062e3941473d" xlink:href="jbl-20240229.xsd#jbl_TradeAccountReceivableSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_ea8eb34c-154c-41a0-8579-f9030f5fd3d9" xlink:to="loc_jbl_TradeAccountReceivableSold_6d37e755-b1da-4f64-9e85-062e3941473d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers_aaa21ba6-e9a8-4955-b37c-581862c10335" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_ea8eb34c-154c-41a0-8579-f9030f5fd3d9" xlink:to="loc_us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers_aaa21ba6-e9a8-4955-b37c-581862c10335" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_998e82b4-92b8-4eac-93df-ae68f247c590" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_ea8eb34c-154c-41a0-8579-f9030f5fd3d9" xlink:to="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_998e82b4-92b8-4eac-93df-ae68f247c590" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/InventoriesDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#InventoriesDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_622a8ffc-fa7c-43bb-9ede-b7c353ee19ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_d38f9954-8533-4ef8-9f3b-bc38e3b19644" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_622a8ffc-fa7c-43bb-9ede-b7c353ee19ec" xlink:to="loc_us-gaap_InventoryCurrentTable_d38f9954-8533-4ef8-9f3b-bc38e3b19644" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_c414809d-be3a-495a-93da-2da583423c57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_d38f9954-8533-4ef8-9f3b-bc38e3b19644" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_c414809d-be3a-495a-93da-2da583423c57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_c414809d-be3a-495a-93da-2da583423c57_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_c414809d-be3a-495a-93da-2da583423c57" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_c414809d-be3a-495a-93da-2da583423c57_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_8c73e436-4f48-4cab-988d-ffda77267458" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_c414809d-be3a-495a-93da-2da583423c57" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_8c73e436-4f48-4cab-988d-ffda77267458" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_MobilityBusinessMember_07581cd5-6f0c-4892-817c-8af265dd9345" xlink:href="jbl-20240229.xsd#jbl_MobilityBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_8c73e436-4f48-4cab-988d-ffda77267458" xlink:to="loc_jbl_MobilityBusinessMember_07581cd5-6f0c-4892-817c-8af265dd9345" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_f41a2bf6-e183-4908-8f16-6768f5e4d694" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_d38f9954-8533-4ef8-9f3b-bc38e3b19644" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_f41a2bf6-e183-4908-8f16-6768f5e4d694" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_f41a2bf6-e183-4908-8f16-6768f5e4d694_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_f41a2bf6-e183-4908-8f16-6768f5e4d694" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_f41a2bf6-e183-4908-8f16-6768f5e4d694_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b09d2580-423e-4dfb-b4a0-7d9e26b82001" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_f41a2bf6-e183-4908-8f16-6768f5e4d694" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b09d2580-423e-4dfb-b4a0-7d9e26b82001" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_aab66bd3-ec31-4f6e-b284-ab9b41a15925" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b09d2580-423e-4dfb-b4a0-7d9e26b82001" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_aab66bd3-ec31-4f6e-b284-ab9b41a15925" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent_1d08c647-3028-42c0-a81b-65fab1156efd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_622a8ffc-fa7c-43bb-9ede-b7c353ee19ec" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventoryCurrent_1d08c647-3028-42c0-a81b-65fab1156efd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/NotesPayableandLongTermDebtScheduleofNotesPayableandLongtermDebtDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#NotesPayableandLongTermDebtScheduleofNotesPayableandLongtermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/NotesPayableandLongTermDebtScheduleofNotesPayableandLongtermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_e88bb481-1763-4780-ab17-0c18ee9c11ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_DebtInstrumentTable_e88bb481-1763-4780-ab17-0c18ee9c11ea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_380e03e5-9d49-4269-a7bd-4c1612565ee7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e88bb481-1763-4780-ab17-0c18ee9c11ea" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_380e03e5-9d49-4269-a7bd-4c1612565ee7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_380e03e5-9d49-4269-a7bd-4c1612565ee7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_380e03e5-9d49-4269-a7bd-4c1612565ee7" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_380e03e5-9d49-4269-a7bd-4c1612565ee7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c9c95259-17d9-4eff-8005-66d0f0204b21" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_380e03e5-9d49-4269-a7bd-4c1612565ee7" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c9c95259-17d9-4eff-8005-66d0f0204b21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_8df8a4e7-11e3-432b-ae64-f6dc27ecdb7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_c9c95259-17d9-4eff-8005-66d0f0204b21" xlink:to="loc_us-gaap_SeniorNotesMember_8df8a4e7-11e3-432b-ae64-f6dc27ecdb7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_5b596f45-1974-4b3d-8de7-77e6cd814989" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_c9c95259-17d9-4eff-8005-66d0f0204b21" xlink:to="loc_us-gaap_LineOfCreditMember_5b596f45-1974-4b3d-8de7-77e6cd814989" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_96b42914-a500-4517-b3a5-ed8ff2e6d405" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e88bb481-1763-4780-ab17-0c18ee9c11ea" xlink:to="loc_us-gaap_CreditFacilityAxis_96b42914-a500-4517-b3a5-ed8ff2e6d405" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_96b42914-a500-4517-b3a5-ed8ff2e6d405_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_96b42914-a500-4517-b3a5-ed8ff2e6d405" xlink:to="loc_us-gaap_CreditFacilityDomain_96b42914-a500-4517-b3a5-ed8ff2e6d405_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_947c587c-89de-40a3-b0ac-f982b1b8673e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_96b42914-a500-4517-b3a5-ed8ff2e6d405" xlink:to="loc_us-gaap_CreditFacilityDomain_947c587c-89de-40a3-b0ac-f982b1b8673e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_fe8d5cc2-ceb7-4530-916d-8ec0e62a8674" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_947c587c-89de-40a3-b0ac-f982b1b8673e" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_fe8d5cc2-ceb7-4530-916d-8ec0e62a8674" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MediumTermNotesMember_1790a20a-6393-46bb-96bc-f86233c5e557" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MediumTermNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_947c587c-89de-40a3-b0ac-f982b1b8673e" xlink:to="loc_us-gaap_MediumTermNotesMember_1790a20a-6393-46bb-96bc-f86233c5e557" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_9bdfecba-eebf-4edb-8bb0-9704f17c03ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_947c587c-89de-40a3-b0ac-f982b1b8673e" xlink:to="loc_us-gaap_CommercialPaperMember_9bdfecba-eebf-4edb-8bb0-9704f17c03ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_69629dbd-100a-4738-ab55-fbb2bdc696a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e88bb481-1763-4780-ab17-0c18ee9c11ea" xlink:to="loc_us-gaap_DebtInstrumentAxis_69629dbd-100a-4738-ab55-fbb2bdc696a3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_69629dbd-100a-4738-ab55-fbb2bdc696a3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_69629dbd-100a-4738-ab55-fbb2bdc696a3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_69629dbd-100a-4738-ab55-fbb2bdc696a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_69629dbd-100a-4738-ab55-fbb2bdc696a3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2028Member_87dad531-a357-4cd6-920c-70a2094c3e11" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueJanuary2028Member_87dad531-a357-4cd6-920c-70a2094c3e11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2030Member_3b6bd1e9-6f4f-4fdd-b41c-e0d18a073b2c" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueJanuary2030Member_3b6bd1e9-6f4f-4fdd-b41c-e0d18a073b2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2031Member_f9a58561-4ef0-4e98-b5db-08dcef8b143e" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueJanuary2031Member_f9a58561-4ef0-4e98-b5db-08dcef8b143e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueApril2026Member_1d6d6dad-c770-48f9-84c7-28453106aa85" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueApril2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueApril2026Member_1d6d6dad-c770-48f9-84c7-28453106aa85" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueMay2027Member_1f0c7368-b536-402b-86d0-28bb607b0ef1" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueMay2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueMay2027Member_1f0c7368-b536-402b-86d0-28bb607b0ef1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueFebruary2029Member_0281e859-fa15-4484-96ad-eb2181929116" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueFebruary2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_SeniorNotesDueFebruary2029Member_0281e859-fa15-4484-96ad-eb2181929116" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_CreditFacilityMember_8768487f-52f0-4b91-b05e-86e681f22ce1" xlink:href="jbl-20240229.xsd#jbl_CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_71f84313-74fb-42aa-882e-cfa615bb2b64" xlink:to="loc_jbl_CreditFacilityMember_8768487f-52f0-4b91-b05e-86e681f22ce1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_CreditFacilityDueJanuary2026Member_6ca6d44f-a2af-46ef-af1a-73a87c4761c0" xlink:href="jbl-20240229.xsd#jbl_CreditFacilityDueJanuary2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_CreditFacilityMember_8768487f-52f0-4b91-b05e-86e681f22ce1" xlink:to="loc_jbl_CreditFacilityDueJanuary2026Member_6ca6d44f-a2af-46ef-af1a-73a87c4761c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_CreditFacilityDueJanuary2028Member_40027add-6971-4dad-a127-7e2ee087ea76" xlink:href="jbl-20240229.xsd#jbl_CreditFacilityDueJanuary2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_CreditFacilityMember_8768487f-52f0-4b91-b05e-86e681f22ce1" xlink:to="loc_jbl_CreditFacilityDueJanuary2028Member_40027add-6971-4dad-a127-7e2ee087ea76" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_fe572b2a-d28e-4b7b-b40b-74a48e66de2c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_fe572b2a-d28e-4b7b-b40b-74a48e66de2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_2ca061f7-6c26-43ef-ae5c-57c4b4cf1367" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_LongTermDebt_2ca061f7-6c26-43ef-ae5c-57c4b4cf1367" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_1ef51b0e-8814-4f70-a429-af6ae031b6fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_LongTermDebtCurrent_1ef51b0e-8814-4f70-a429-af6ae031b6fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_2458c01a-03ee-4442-8d0a-c1a79d833687" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_2458c01a-03ee-4442-8d0a-c1a79d833687" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_53bf529f-31ff-4db7-a01d-ff2c40806ada" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_DebtInstrumentTerm_53bf529f-31ff-4db7-a01d-ff2c40806ada" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7b0408ef-dca1-4cdc-acfa-8b3bfa1c6dbd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7b0408ef-dca1-4cdc-acfa-8b3bfa1c6dbd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_a6a09eaa-367b-4dae-baf8-9253ec714a5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_997506c2-98d2-4569-9ab9-c4a6b85ea4bc" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_a6a09eaa-367b-4dae-baf8-9253ec714a5c" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/NotesPayableandLongTermDebtAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#NotesPayableandLongTermDebtAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/NotesPayableandLongTermDebtAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_15f3f236-37de-4b3e-84ba-767c8c81626d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_69b199f2-9bd3-412d-8bac-c18ec2492197" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_15f3f236-37de-4b3e-84ba-767c8c81626d" xlink:to="loc_us-gaap_DebtInstrumentTable_69b199f2-9bd3-412d-8bac-c18ec2492197" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_190e50ce-11c2-49db-b0f3-0d825df7d0f4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_69b199f2-9bd3-412d-8bac-c18ec2492197" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_190e50ce-11c2-49db-b0f3-0d825df7d0f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_190e50ce-11c2-49db-b0f3-0d825df7d0f4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_190e50ce-11c2-49db-b0f3-0d825df7d0f4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_190e50ce-11c2-49db-b0f3-0d825df7d0f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_19d08552-8e4a-4c59-ae85-271aaa13afe7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_190e50ce-11c2-49db-b0f3-0d825df7d0f4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_19d08552-8e4a-4c59-ae85-271aaa13afe7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_f609ac4b-1aaa-472e-aa3c-b8cd28fb0013" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_19d08552-8e4a-4c59-ae85-271aaa13afe7" xlink:to="loc_us-gaap_SeniorNotesMember_f609ac4b-1aaa-472e-aa3c-b8cd28fb0013" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d474cf21-bdbf-48ff-a5f2-c144317405a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_69b199f2-9bd3-412d-8bac-c18ec2492197" xlink:to="loc_us-gaap_DebtInstrumentAxis_d474cf21-bdbf-48ff-a5f2-c144317405a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d474cf21-bdbf-48ff-a5f2-c144317405a6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d474cf21-bdbf-48ff-a5f2-c144317405a6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d474cf21-bdbf-48ff-a5f2-c144317405a6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d474cf21-bdbf-48ff-a5f2-c144317405a6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2028Member_7fd20579-fb0f-4779-906e-6b16caff7eda" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueJanuary2028Member_7fd20579-fb0f-4779-906e-6b16caff7eda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2030Member_b62aef92-bd71-49fa-8ef9-be0c1233fbf6" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueJanuary2030Member_b62aef92-bd71-49fa-8ef9-be0c1233fbf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2031Member_8555914b-1e3d-4d6c-b280-b91654341f25" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueJanuary2031Member_8555914b-1e3d-4d6c-b280-b91654341f25" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueApril2026Member_68de1582-7804-47c1-9aff-e18c02da30f0" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueApril2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueApril2026Member_68de1582-7804-47c1-9aff-e18c02da30f0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueMay2027Member_eda41cc0-a7a8-44a8-a4fb-d9fd1a235d57" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueMay2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueMay2027Member_eda41cc0-a7a8-44a8-a4fb-d9fd1a235d57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueFebruary2029Member_086ca562-f99f-4139-80af-7d0fd0def4df" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueFebruary2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0dc6bef3-cc04-4a82-969c-a4a2343cca33" xlink:to="loc_jbl_SeniorNotesDueFebruary2029Member_086ca562-f99f-4139-80af-7d0fd0def4df" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8bcaa224-8f23-468d-a43f-f69053aad802" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_15f3f236-37de-4b3e-84ba-767c8c81626d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_8bcaa224-8f23-468d-a43f-f69053aad802" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/AssetBackedSecuritizationProgramSecuritizationActivityDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#AssetBackedSecuritizationProgramSecuritizationActivityDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/AssetBackedSecuritizationProgramSecuritizationActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_eee369c2-29c5-44cc-b268-b75c9e8ae194" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_21c649f6-389a-41b3-b4d6-a6567c4a00e7" xlink:href="jbl-20240229.xsd#jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_eee369c2-29c5-44cc-b268-b75c9e8ae194" xlink:to="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_21c649f6-389a-41b3-b4d6-a6567c4a00e7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_d8f1cf49-9a8b-4967-91c6-e0814e6fc016" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramTable_21c649f6-389a-41b3-b4d6-a6567c4a00e7" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_d8f1cf49-9a8b-4967-91c6-e0814e6fc016" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_d8f1cf49-9a8b-4967-91c6-e0814e6fc016_default" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_d8f1cf49-9a8b-4967-91c6-e0814e6fc016" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_d8f1cf49-9a8b-4967-91c6-e0814e6fc016_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_40115c07-6eac-42a7-9238-406d131641fe" xlink:href="jbl-20240229.xsd#jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeAxis_d8f1cf49-9a8b-4967-91c6-e0814e6fc016" xlink:to="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_40115c07-6eac-42a7-9238-406d131641fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AssetBackedSecuritizationsMember_26625968-82cf-4279-8818-2e8c06505796" xlink:href="jbl-20240229.xsd#jbl_AssetBackedSecuritizationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleProgramTypeDomain_40115c07-6eac-42a7-9238-406d131641fe" xlink:to="loc_jbl_AssetBackedSecuritizationsMember_26625968-82cf-4279-8818-2e8c06505796" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TradeAccountReceivableSold_26c3ed80-02d2-48e8-b4c8-45e28277a2b7" xlink:href="jbl-20240229.xsd#jbl_TradeAccountReceivableSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_eee369c2-29c5-44cc-b268-b75c9e8ae194" xlink:to="loc_jbl_TradeAccountReceivableSold_26c3ed80-02d2-48e8-b4c8-45e28277a2b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers_2135251d-c1d0-4f87-8e54-b2a6919c1304" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_eee369c2-29c5-44cc-b268-b75c9e8ae194" xlink:to="loc_us-gaap_CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers_2135251d-c1d0-4f87-8e54-b2a6919c1304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_0b7b598e-0d0c-4526-a869-0aa2618fe111" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_TradeAccountsReceivableSecuritizationAndSaleProgramLineItems_eee369c2-29c5-44cc-b268-b75c9e8ae194" xlink:to="loc_us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale_0b7b598e-0d0c-4526-a869-0aa2618fe111" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/AccruedExpensesDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#AccruedExpensesDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/AccruedExpensesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramLineItems_0a31c55f-678f-4854-9718-746070373900" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplierFinanceProgramLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramTable_36de1081-543c-46db-b292-db2aab6e7a4a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplierFinanceProgramTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SupplierFinanceProgramLineItems_0a31c55f-678f-4854-9718-746070373900" xlink:to="loc_us-gaap_SupplierFinanceProgramTable_36de1081-543c-46db-b292-db2aab6e7a4a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_a02ee576-8eaf-4cd8-b9c4-51abb12cd098" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SupplierFinanceProgramTable_36de1081-543c-46db-b292-db2aab6e7a4a" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_a02ee576-8eaf-4cd8-b9c4-51abb12cd098" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_a02ee576-8eaf-4cd8-b9c4-51abb12cd098_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a02ee576-8eaf-4cd8-b9c4-51abb12cd098" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_a02ee576-8eaf-4cd8-b9c4-51abb12cd098_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_0b7e4172-b92c-4503-a86a-c83cf2e23020" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a02ee576-8eaf-4cd8-b9c4-51abb12cd098" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_0b7e4172-b92c-4503-a86a-c83cf2e23020" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_f7a148bb-459b-4154-af5f-b8f9680f7c00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_0b7e4172-b92c-4503-a86a-c83cf2e23020" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_f7a148bb-459b-4154-af5f-b8f9680f7c00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4e91a086-535e-447f-86da-223fa8137ef7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SupplierFinanceProgramTable_36de1081-543c-46db-b292-db2aab6e7a4a" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4e91a086-535e-447f-86da-223fa8137ef7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4e91a086-535e-447f-86da-223fa8137ef7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4e91a086-535e-447f-86da-223fa8137ef7" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4e91a086-535e-447f-86da-223fa8137ef7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_cc3cf298-d79e-4fc5-9ab6-849291fc878a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4e91a086-535e-447f-86da-223fa8137ef7" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_cc3cf298-d79e-4fc5-9ab6-849291fc878a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_MobilityBusinessMember_ca187c90-3da5-44bd-94fa-3496ad865998" xlink:href="jbl-20240229.xsd#jbl_MobilityBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_cc3cf298-d79e-4fc5-9ab6-849291fc878a" xlink:to="loc_jbl_MobilityBusinessMember_ca187c90-3da5-44bd-94fa-3496ad865998" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_b7d0234b-982f-4f70-8a86-272d91d12bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplierFinanceProgramLineItems_0a31c55f-678f-4854-9718-746070373900" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_b7d0234b-982f-4f70-8a86-272d91d12bbc" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#DerivativeFinancialInstrumentsandHedgingActivitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_626ace19-da8b-4785-a3ee-5a4f3ddda51e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_626ace19-da8b-4785-a3ee-5a4f3ddda51e" xlink:to="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_308859f3-cbe0-4de4-89c9-f01fdc07b879" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:to="loc_us-gaap_FinancialInstrumentAxis_308859f3-cbe0-4de4-89c9-f01fdc07b879" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_308859f3-cbe0-4de4-89c9-f01fdc07b879_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_308859f3-cbe0-4de4-89c9-f01fdc07b879" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_308859f3-cbe0-4de4-89c9-f01fdc07b879_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3bfb2bda-1cd1-4f30-84ad-be81e6b01684" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_308859f3-cbe0-4de4-89c9-f01fdc07b879" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3bfb2bda-1cd1-4f30-84ad-be81e6b01684" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_14f4b910-c5e3-4173-84b6-d7532c5d2555" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3bfb2bda-1cd1-4f30-84ad-be81e6b01684" xlink:to="loc_us-gaap_ForwardContractsMember_14f4b910-c5e3-4173-84b6-d7532c5d2555" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_ae7237b5-fd6f-4575-804f-1def1218707e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_ae7237b5-fd6f-4575-804f-1def1218707e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ae7237b5-fd6f-4575-804f-1def1218707e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ae7237b5-fd6f-4575-804f-1def1218707e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ae7237b5-fd6f-4575-804f-1def1218707e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_0908f18c-4299-4ec8-9acc-52ac90e50018" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ae7237b5-fd6f-4575-804f-1def1218707e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_0908f18c-4299-4ec8-9acc-52ac90e50018" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_02c12462-66ed-4acb-a946-e4e1585818f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_0908f18c-4299-4ec8-9acc-52ac90e50018" xlink:to="loc_us-gaap_ForeignExchangeContractMember_02c12462-66ed-4acb-a946-e4e1585818f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_4abe7660-9176-48cf-bd6e-fae1ef415aff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:to="loc_us-gaap_HedgingDesignationAxis_4abe7660-9176-48cf-bd6e-fae1ef415aff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_4abe7660-9176-48cf-bd6e-fae1ef415aff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_4abe7660-9176-48cf-bd6e-fae1ef415aff" xlink:to="loc_us-gaap_HedgingDesignationDomain_4abe7660-9176-48cf-bd6e-fae1ef415aff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_e8cf489b-cbb2-4450-9bed-a91e8f3d0cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_4abe7660-9176-48cf-bd6e-fae1ef415aff" xlink:to="loc_us-gaap_HedgingDesignationDomain_e8cf489b-cbb2-4450-9bed-a91e8f3d0cfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_45424694-dd8d-42d4-aee2-b64ce6a0603b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_e8cf489b-cbb2-4450-9bed-a91e8f3d0cfd" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_45424694-dd8d-42d4-aee2-b64ce6a0603b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_ad2a8a6f-5b70-4cff-ab08-5c8a5126fc00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_e8cf489b-cbb2-4450-9bed-a91e8f3d0cfd" xlink:to="loc_us-gaap_NondesignatedMember_ad2a8a6f-5b70-4cff-ab08-5c8a5126fc00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_65307331-b1fe-430a-a2a3-7c6e909526a7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_07b214f4-b4cf-44e0-bac3-f68de05995eb" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_65307331-b1fe-430a-a2a3-7c6e909526a7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_65307331-b1fe-430a-a2a3-7c6e909526a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_65307331-b1fe-430a-a2a3-7c6e909526a7" xlink:to="loc_us-gaap_HedgingRelationshipDomain_65307331-b1fe-430a-a2a3-7c6e909526a7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_766fb125-65a4-45a3-b455-14b0cd33afca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_65307331-b1fe-430a-a2a3-7c6e909526a7" xlink:to="loc_us-gaap_HedgingRelationshipDomain_766fb125-65a4-45a3-b455-14b0cd33afca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_d02cddf8-be0c-48c0-9913-fed1a6b85759" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_766fb125-65a4-45a3-b455-14b0cd33afca" xlink:to="loc_us-gaap_CashFlowHedgingMember_d02cddf8-be0c-48c0-9913-fed1a6b85759" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_0f1a4ae4-c1ca-4194-9c6c-62559995fece" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_626ace19-da8b-4785-a3ee-5a4f3ddda51e" xlink:to="loc_us-gaap_DerivativeNotionalAmount_0f1a4ae4-c1ca-4194-9c6c-62559995fece" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesScheduleofMaturityDateandAggregateNotionalAmountOutstandingofNetInvestmentHedgesDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#DerivativeFinancialInstrumentsandHedgingActivitiesScheduleofMaturityDateandAggregateNotionalAmountOutstandingofNetInvestmentHedgesDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesScheduleofMaturityDateandAggregateNotionalAmountOutstandingofNetInvestmentHedgesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_67f66510-e544-454f-a578-a6a77f9ca7bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_67f66510-e544-454f-a578-a6a77f9ca7bd" xlink:to="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_bfbfa3eb-7f2e-454a-83b7-2e6a2cc30429" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueSeptember2023Member_11940e54-b95b-4ba2-9a2f-37471f107775" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueSeptember2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueSeptember2023Member_11940e54-b95b-4ba2-9a2f-37471f107775" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueOctober2023Member_704b03a5-6c65-464e-aab4-e5d9c3fa2b09" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueOctober2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueOctober2023Member_704b03a5-6c65-464e-aab4-e5d9c3fa2b09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueJanuary2024Member_808a62af-93d2-49be-b4a0-8fd7fe19faab" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueJanuary2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueJanuary2024Member_808a62af-93d2-49be-b4a0-8fd7fe19faab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueApril2024Member_4b895077-06ce-4b1a-aaaf-d8a392463506" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueApril2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueApril2024Member_4b895077-06ce-4b1a-aaaf-d8a392463506" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueJuly2024Member_dcb3b7dc-4d83-408e-b173-ae78b83c0771" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueJuly2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueJuly2024Member_dcb3b7dc-4d83-408e-b173-ae78b83c0771" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ForeignExchangeContractDerivativeDueOctober2024Member_69a2b3a5-3a74-4d73-9753-4a2c40131e26" xlink:href="jbl-20240229.xsd#jbl_ForeignExchangeContractDerivativeDueOctober2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_jbl_ForeignExchangeContractDerivativeDueOctober2024Member_69a2b3a5-3a74-4d73-9753-4a2c40131e26" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_e79ba5ac-b232-4e77-9fd8-d04ffdc9594e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_14b8d04a-7371-4d8c-9553-3feb83d31902" xlink:to="loc_us-gaap_ForeignExchangeContractMember_e79ba5ac-b232-4e77-9fd8-d04ffdc9594e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_b8b43890-bfb2-4b00-8d75-4c120b537e17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_b8b43890-bfb2-4b00-8d75-4c120b537e17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_b8b43890-bfb2-4b00-8d75-4c120b537e17_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_b8b43890-bfb2-4b00-8d75-4c120b537e17" xlink:to="loc_us-gaap_HedgingRelationshipDomain_b8b43890-bfb2-4b00-8d75-4c120b537e17_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_e5c8038a-a803-41af-83d4-d5df681d7bd8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_b8b43890-bfb2-4b00-8d75-4c120b537e17" xlink:to="loc_us-gaap_HedgingRelationshipDomain_e5c8038a-a803-41af-83d4-d5df681d7bd8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_fc2e2967-cbb6-4cb1-8cbc-a87a574de876" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_e5c8038a-a803-41af-83d4-d5df681d7bd8" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_fc2e2967-cbb6-4cb1-8cbc-a87a574de876" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_b30055fe-516e-4ee9-819f-7773b174715f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:to="loc_us-gaap_FinancialInstrumentAxis_b30055fe-516e-4ee9-819f-7773b174715f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b30055fe-516e-4ee9-819f-7773b174715f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_b30055fe-516e-4ee9-819f-7773b174715f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b30055fe-516e-4ee9-819f-7773b174715f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cf5a4e7a-2997-403d-aa79-1187660d1635" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_b30055fe-516e-4ee9-819f-7773b174715f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cf5a4e7a-2997-403d-aa79-1187660d1635" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractsMember_16bea835-955e-4da1-9cef-a4dcdb92a566" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cf5a4e7a-2997-403d-aa79-1187660d1635" xlink:to="loc_us-gaap_ForwardContractsMember_16bea835-955e-4da1-9cef-a4dcdb92a566" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_e5bb5731-7707-452c-84f1-81af7c4e3f96" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_53240986-d010-4320-b2be-ce38cc867e4b" xlink:to="loc_us-gaap_HedgingDesignationAxis_e5bb5731-7707-452c-84f1-81af7c4e3f96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_e5bb5731-7707-452c-84f1-81af7c4e3f96_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_e5bb5731-7707-452c-84f1-81af7c4e3f96" xlink:to="loc_us-gaap_HedgingDesignationDomain_e5bb5731-7707-452c-84f1-81af7c4e3f96_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_700530b9-4505-4ea6-9be4-b82b12c004a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_e5bb5731-7707-452c-84f1-81af7c4e3f96" xlink:to="loc_us-gaap_HedgingDesignationDomain_700530b9-4505-4ea6-9be4-b82b12c004a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_ec4dcbb2-95c8-4183-a334-2a8535f6801c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_700530b9-4505-4ea6-9be4-b82b12c004a6" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_ec4dcbb2-95c8-4183-a334-2a8535f6801c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_d2d19aae-07f8-43ec-8cc3-50d6030eddfa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_67f66510-e544-454f-a578-a6a77f9ca7bd" xlink:to="loc_us-gaap_DerivativeNotionalAmount_d2d19aae-07f8-43ec-8cc3-50d6030eddfa" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesFairValueofDerivativeInstrumentsRecordedonConsolidatedStatementsofOperationsDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#DerivativeFinancialInstrumentsandHedgingActivitiesFairValueofDerivativeInstrumentsRecordedonConsolidatedStatementsofOperationsDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/DerivativeFinancialInstrumentsandHedgingActivitiesFairValueofDerivativeInstrumentsRecordedonConsolidatedStatementsofOperationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_65db5980-c020-41d7-820f-2b40439fc65b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_e18ee2e6-26f9-459d-92a7-c24d463e13ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_65db5980-c020-41d7-820f-2b40439fc65b" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_e18ee2e6-26f9-459d-92a7-c24d463e13ea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_f812fa61-f720-4ecf-beb4-915f65e93837" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_e18ee2e6-26f9-459d-92a7-c24d463e13ea" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_f812fa61-f720-4ecf-beb4-915f65e93837" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_f812fa61-f720-4ecf-beb4-915f65e93837_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_f812fa61-f720-4ecf-beb4-915f65e93837" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_f812fa61-f720-4ecf-beb4-915f65e93837_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7005e58c-14cf-4f98-82ae-96cf73b33d24" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_f812fa61-f720-4ecf-beb4-915f65e93837" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7005e58c-14cf-4f98-82ae-96cf73b33d24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_ba1b9fdf-3df8-45c1-93bd-a714dbe29c15" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7005e58c-14cf-4f98-82ae-96cf73b33d24" xlink:to="loc_us-gaap_ForeignExchangeContractMember_ba1b9fdf-3df8-45c1-93bd-a714dbe29c15" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_9d088c62-77af-48ea-b798-335655e6bb56" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_e18ee2e6-26f9-459d-92a7-c24d463e13ea" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_9d088c62-77af-48ea-b798-335655e6bb56" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_9d088c62-77af-48ea-b798-335655e6bb56_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_9d088c62-77af-48ea-b798-335655e6bb56" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_9d088c62-77af-48ea-b798-335655e6bb56_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_e67a76a6-5a21-4658-a5c0-05941a720c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_9d088c62-77af-48ea-b798-335655e6bb56" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_e67a76a6-5a21-4658-a5c0-05941a720c5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_7ab029b2-5f29-4afb-b427-f59a1418271c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_e67a76a6-5a21-4658-a5c0-05941a720c5d" xlink:to="loc_us-gaap_CostOfSalesMember_7ab029b2-5f29-4afb-b427-f59a1418271c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_b555f697-4626-47a8-9c13-8f58c798d86a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_65db5980-c020-41d7-820f-2b40439fc65b" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_b555f697-4626-47a8-9c13-8f58c798d86a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_cc61c1e9-14d1-4f58-b82c-335020eca3f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_65db5980-c020-41d7-820f-2b40439fc65b" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_cc61c1e9-14d1-4f58-b82c-335020eca3f3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/AccumulatedOtherComprehensiveIncomeChangeinAOCINetofTaxDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#AccumulatedOtherComprehensiveIncomeChangeinAOCINetofTaxDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/AccumulatedOtherComprehensiveIncomeChangeinAOCINetofTaxDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ab8661b5-6aad-4a99-8698-adbe5873f76e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d03c11f8-5635-4cb3-bcd4-b7a0750a65d4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ab8661b5-6aad-4a99-8698-adbe5873f76e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d03c11f8-5635-4cb3-bcd4-b7a0750a65d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_057283b2-f35c-45e0-bad0-687373a8f3b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d03c11f8-5635-4cb3-bcd4-b7a0750a65d4" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_057283b2-f35c-45e0-bad0-687373a8f3b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_057283b2-f35c-45e0-bad0-687373a8f3b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_057283b2-f35c-45e0-bad0-687373a8f3b8" xlink:to="loc_us-gaap_EquityComponentDomain_057283b2-f35c-45e0-bad0-687373a8f3b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_89218786-1082-406e-9cf1-dc492e57f68d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_057283b2-f35c-45e0-bad0-687373a8f3b8" xlink:to="loc_us-gaap_EquityComponentDomain_89218786-1082-406e-9cf1-dc492e57f68d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_89218786-1082-406e-9cf1-dc492e57f68d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_d5dedcbe-5d56-4f72-a7f9-3920adb60907" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_d5dedcbe-5d56-4f72-a7f9-3920adb60907" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember_8d73c69a-f0d9-474f-a046-639d9bf7ceff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:to="loc_us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember_8d73c69a-f0d9-474f-a046-639d9bf7ceff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_46211e36-b69f-46bc-8f4a-b197edd1dc61" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_46211e36-b69f-46bc-8f4a-b197edd1dc61" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_a37bb31c-4304-4ca8-a31e-b56356281408" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_a37bb31c-4304-4ca8-a31e-b56356281408" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_387e1eb0-9698-4053-b72e-db9ef6034bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_0de8239f-6ce0-47cf-9903-47551a2ab9b3" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_387e1eb0-9698-4053-b72e-db9ef6034bcf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ab8661b5-6aad-4a99-8698-adbe5873f76e" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7ecd0256-826d-4938-b9ea-3e69b5874d44" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7ecd0256-826d-4938-b9ea-3e69b5874d44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_8aa61d8e-9fe2-4f0a-9230-a11afb44badc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_8aa61d8e-9fe2-4f0a-9230-a11afb44badc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_92ff7e6d-9ef6-41af-b78a-074553f468b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_92ff7e6d-9ef6-41af-b78a-074553f468b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0a412576-015d-4b1b-984e-5624c71bf4fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_cacba05c-a884-4f41-9188-f51a0fa1d4c8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0a412576-015d-4b1b-984e-5624c71bf4fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_54298b49-5e78-4f98-89ec-6d0567b3bac9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/AccumulatedOtherComprehensiveIncomeReclassificationfromAOCIDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#AccumulatedOtherComprehensiveIncomeReclassificationfromAOCIDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/AccumulatedOtherComprehensiveIncomeReclassificationfromAOCIDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_bd248a09-724f-40bf-80b7-2b3474d6f087" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_bd248a09-724f-40bf-80b7-2b3474d6f087" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_5c4c1505-8945-4bea-8924-b73f98c81763" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_bd248a09-724f-40bf-80b7-2b3474d6f087" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_5c4c1505-8945-4bea-8924-b73f98c81763" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_5c4c1505-8945-4bea-8924-b73f98c81763_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_5c4c1505-8945-4bea-8924-b73f98c81763" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_5c4c1505-8945-4bea-8924-b73f98c81763_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_b50d0085-d119-4729-b00e-f89b9285c3fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_5c4c1505-8945-4bea-8924-b73f98c81763" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_b50d0085-d119-4729-b00e-f89b9285c3fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_0d9340ea-5954-4326-855f-fcefbb91c950" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_b50d0085-d119-4729-b00e-f89b9285c3fe" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_0d9340ea-5954-4326-855f-fcefbb91c950" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_afedfc4b-465e-4a3c-810b-bf4609136258" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_bd248a09-724f-40bf-80b7-2b3474d6f087" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_afedfc4b-465e-4a3c-810b-bf4609136258" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_afedfc4b-465e-4a3c-810b-bf4609136258_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_afedfc4b-465e-4a3c-810b-bf4609136258" xlink:to="loc_us-gaap_EquityComponentDomain_afedfc4b-465e-4a3c-810b-bf4609136258_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_afedfc4b-465e-4a3c-810b-bf4609136258" xlink:to="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f951d4e1-fe74-4876-9bf1-5dc825894529" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f951d4e1-fe74-4876-9bf1-5dc825894529" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember_992d34aa-ff6d-4fab-b193-99a14ca458bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:to="loc_us-gaap_AociDerivativeQualifyingAsHedgeExcludedComponentParentMember_992d34aa-ff6d-4fab-b193-99a14ca458bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_daafab3f-0135-4f23-8f2a-6a4c74ccd5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_daafab3f-0135-4f23-8f2a-6a4c74ccd5bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_6fa69eb0-26db-4936-a463-b07e0963dd46" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_6fa69eb0-26db-4936-a463-b07e0963dd46" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_9cfaa4e5-8e9b-462f-855f-39a7f00b6630" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ff1bbf3c-6ce4-4965-bc0a-9688c1237ebc" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_9cfaa4e5-8e9b-462f-855f-39a7f00b6630" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_ef946d1e-530f-4290-8517-bb88c8cc2dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_bd248a09-724f-40bf-80b7-2b3474d6f087" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_ef946d1e-530f-4290-8517-bb88c8cc2dfa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ef946d1e-530f-4290-8517-bb88c8cc2dfa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ef946d1e-530f-4290-8517-bb88c8cc2dfa" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ef946d1e-530f-4290-8517-bb88c8cc2dfa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c232b2d5-400d-4456-b05c-fcce2b526760" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ef946d1e-530f-4290-8517-bb88c8cc2dfa" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c232b2d5-400d-4456-b05c-fcce2b526760" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_b410fbea-a8ce-45d6-92e2-287c9ec0c09e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c232b2d5-400d-4456-b05c-fcce2b526760" xlink:to="loc_us-gaap_ForeignExchangeContractMember_b410fbea-a8ce-45d6-92e2-287c9ec0c09e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_e9323b10-5ddd-40db-82a8-1af9ec19ea83" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c232b2d5-400d-4456-b05c-fcce2b526760" xlink:to="loc_us-gaap_InterestRateContractMember_e9323b10-5ddd-40db-82a8-1af9ec19ea83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_b7982a35-455f-4052-bd60-14c7848b007d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_b7982a35-455f-4052-bd60-14c7848b007d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_94b5a7d4-e5e3-4149-8272-06efaa1c2453" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_94b5a7d4-e5e3-4149-8272-06efaa1c2453" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_86df3037-d1b1-4e8e-ade3-10290d3eaca0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_InterestExpense_86df3037-d1b1-4e8e-ade3-10290d3eaca0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_fad50cb6-0272-4a96-9e5c-addddd1e4228" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_fad50cb6-0272-4a96-9e5c-addddd1e4228" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_ba29f7b4-26cb-408d-96bf-d6d6f81aafc0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_NetIncomeLoss_ba29f7b4-26cb-408d-96bf-d6d6f81aafc0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_62d7c792-5fab-4ffd-9c25-c44cf5a688a2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_e86f9e1a-134e-44f0-9c12-f4095b26cec1" xlink:to="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_62d7c792-5fab-4ffd-9c25-c44cf5a688a2" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/StockholdersEquityRecognizedStockBasedCompensationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#StockholdersEquityRecognizedStockBasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/StockholdersEquityRecognizedStockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82f4ffa9-c6af-4eed-b3a8-960ae2766128" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_99793adb-1dd4-4826-b8f8-c77bb80362a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82f4ffa9-c6af-4eed-b3a8-960ae2766128" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_99793adb-1dd4-4826-b8f8-c77bb80362a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_1c4c1452-eff5-47ae-856d-742e96e9bcf9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_99793adb-1dd4-4826-b8f8-c77bb80362a6" xlink:to="loc_us-gaap_AwardTypeAxis_1c4c1452-eff5-47ae-856d-742e96e9bcf9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1c4c1452-eff5-47ae-856d-742e96e9bcf9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_1c4c1452-eff5-47ae-856d-742e96e9bcf9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1c4c1452-eff5-47ae-856d-742e96e9bcf9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c09862cd-56d9-488d-9a85-71fc4e0bc473" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_1c4c1452-eff5-47ae-856d-742e96e9bcf9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c09862cd-56d9-488d-9a85-71fc4e0bc473" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_c8b0dc3e-25aa-47cb-b18e-67089d83bafa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c09862cd-56d9-488d-9a85-71fc4e0bc473" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_c8b0dc3e-25aa-47cb-b18e-67089d83bafa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_98e16962-2cfd-45b7-9d69-3296c3942de9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c09862cd-56d9-488d-9a85-71fc4e0bc473" xlink:to="loc_us-gaap_EmployeeStockMember_98e16962-2cfd-45b7-9d69-3296c3942de9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_8fe59320-dbeb-42de-a724-60552256d785" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_82f4ffa9-c6af-4eed-b3a8-960ae2766128" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_8fe59320-dbeb-42de-a724-60552256d785" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/StockholdersEquityAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#StockholdersEquityAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/StockholdersEquityAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_63a8d5f6-cae6-476f-a125-29797457e693" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_63a8d5f6-cae6-476f-a125-29797457e693" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_3c64262e-c227-4105-9c24-9e4d83b51df5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_63a8d5f6-cae6-476f-a125-29797457e693" xlink:to="loc_us-gaap_PlanNameAxis_3c64262e-c227-4105-9c24-9e4d83b51df5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_3c64262e-c227-4105-9c24-9e4d83b51df5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_3c64262e-c227-4105-9c24-9e4d83b51df5" xlink:to="loc_us-gaap_PlanNameDomain_3c64262e-c227-4105-9c24-9e4d83b51df5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_51f0deaf-945b-4399-96d0-1b986d96f199" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_3c64262e-c227-4105-9c24-9e4d83b51df5" xlink:to="loc_us-gaap_PlanNameDomain_51f0deaf-945b-4399-96d0-1b986d96f199" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_A2021EquityIncentivePlanMember_e53289d1-26f0-4512-aaf8-a44869c11410" xlink:href="jbl-20240229.xsd#jbl_A2021EquityIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_51f0deaf-945b-4399-96d0-1b986d96f199" xlink:to="loc_jbl_A2021EquityIncentivePlanMember_e53289d1-26f0-4512-aaf8-a44869c11410" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_90c42e23-18de-44bc-8697-0f37a75831be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_63a8d5f6-cae6-476f-a125-29797457e693" xlink:to="loc_us-gaap_AwardTypeAxis_90c42e23-18de-44bc-8697-0f37a75831be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_90c42e23-18de-44bc-8697-0f37a75831be_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_90c42e23-18de-44bc-8697-0f37a75831be" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_90c42e23-18de-44bc-8697-0f37a75831be_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0d33bc59-a8e7-45d0-8f61-e8ce617f6674" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_90c42e23-18de-44bc-8697-0f37a75831be" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0d33bc59-a8e7-45d0-8f61-e8ce617f6674" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TimeBasedRestrictedStockUnitsMember_f293b537-d847-4aab-a976-b1a2f6f1d3be" xlink:href="jbl-20240229.xsd#jbl_TimeBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0d33bc59-a8e7-45d0-8f61-e8ce617f6674" xlink:to="loc_jbl_TimeBasedRestrictedStockUnitsMember_f293b537-d847-4aab-a976-b1a2f6f1d3be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_1592361a-6a9d-468f-8aad-370f195ea77f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0d33bc59-a8e7-45d0-8f61-e8ce617f6674" xlink:to="loc_us-gaap_PerformanceSharesMember_1592361a-6a9d-468f-8aad-370f195ea77f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_MarketBasedRestrictedStockUnitsMember_4deab4e9-0b1c-4c46-8f82-03c7562bd7b9" xlink:href="jbl-20240229.xsd#jbl_MarketBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0d33bc59-a8e7-45d0-8f61-e8ce617f6674" xlink:to="loc_jbl_MarketBasedRestrictedStockUnitsMember_4deab4e9-0b1c-4c46-8f82-03c7562bd7b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_fe76822a-d05f-4b52-8247-e85de1f46b28" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_63a8d5f6-cae6-476f-a125-29797457e693" xlink:to="loc_srt_RangeAxis_fe76822a-d05f-4b52-8247-e85de1f46b28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_fe76822a-d05f-4b52-8247-e85de1f46b28_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_fe76822a-d05f-4b52-8247-e85de1f46b28" xlink:to="loc_srt_RangeMember_fe76822a-d05f-4b52-8247-e85de1f46b28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_811b96ee-189c-430e-a969-7ca35a20f8b7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_fe76822a-d05f-4b52-8247-e85de1f46b28" xlink:to="loc_srt_RangeMember_811b96ee-189c-430e-a969-7ca35a20f8b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_9236a802-c39e-4827-8662-4a73b66dfdfb" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_811b96ee-189c-430e-a969-7ca35a20f8b7" xlink:to="loc_srt_MaximumMember_9236a802-c39e-4827-8662-4a73b66dfdfb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_490ec2b0-7274-4bb8-8469-1484b6651d07" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_490ec2b0-7274-4bb8-8469-1484b6651d07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_35269352-8ab8-4706-a410-b2c71bfe264b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_35269352-8ab8-4706-a410-b2c71bfe264b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_2df6d28e-1b22-477f-8295-d5b04b35ff40" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_2df6d28e-1b22-477f-8295-d5b04b35ff40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_0e6633e0-ba15-4ff3-8225-8ca5f313143b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e8d333f5-fd9e-4aa1-954a-d89d0ea1022f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_0e6633e0-ba15-4ff3-8225-8ca5f313143b" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/StockholdersEquityCommonStockOutstandingDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#StockholdersEquityCommonStockOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/StockholdersEquityCommonStockOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_97adbf38-a30f-4e5b-a6cd-ab3a45a05961" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_97adbf38-a30f-4e5b-a6cd-ab3a45a05961" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_5afb4f56-0cc2-4ec0-b12a-3be72f024279" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_97adbf38-a30f-4e5b-a6cd-ab3a45a05961" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_5afb4f56-0cc2-4ec0-b12a-3be72f024279" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5afb4f56-0cc2-4ec0-b12a-3be72f024279_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_5afb4f56-0cc2-4ec0-b12a-3be72f024279" xlink:to="loc_us-gaap_EquityComponentDomain_5afb4f56-0cc2-4ec0-b12a-3be72f024279_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ab27ac7e-891b-43b4-be25-61cfb964d375" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_5afb4f56-0cc2-4ec0-b12a-3be72f024279" xlink:to="loc_us-gaap_EquityComponentDomain_ab27ac7e-891b-43b4-be25-61cfb964d375" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_90565144-ca80-447a-bdf2-b94eba257827" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ab27ac7e-891b-43b4-be25-61cfb964d375" xlink:to="loc_us-gaap_CommonStockMember_90565144-ca80-447a-bdf2-b94eba257827" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_c2158944-9f66-40a1-94f2-4cffe90a2b31" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_97adbf38-a30f-4e5b-a6cd-ab3a45a05961" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_c2158944-9f66-40a1-94f2-4cffe90a2b31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_c2158944-9f66-40a1-94f2-4cffe90a2b31_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_c2158944-9f66-40a1-94f2-4cffe90a2b31" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_c2158944-9f66-40a1-94f2-4cffe90a2b31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_89755f5a-3433-49ba-a0e1-d69de65e20c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_c2158944-9f66-40a1-94f2-4cffe90a2b31" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_89755f5a-3433-49ba-a0e1-d69de65e20c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_A2022ShareRepurchaseProgramMember_1b44c4cf-f77e-4727-9104-7c6ab734a5e1" xlink:href="jbl-20240229.xsd#jbl_A2022ShareRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_89755f5a-3433-49ba-a0e1-d69de65e20c6" xlink:to="loc_jbl_A2022ShareRepurchaseProgramMember_1b44c4cf-f77e-4727-9104-7c6ab734a5e1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_A2023ShareRepurchaseProgramMember_9ce042db-4d9e-469f-af87-a838da589399" xlink:href="jbl-20240229.xsd#jbl_A2023ShareRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_89755f5a-3433-49ba-a0e1-d69de65e20c6" xlink:to="loc_jbl_A2023ShareRepurchaseProgramMember_9ce042db-4d9e-469f-af87-a838da589399" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AcceleratedShareRepurchaseProgramMember_68e2f33f-3b9f-4960-a227-d0254f2c68bf" xlink:href="jbl-20240229.xsd#jbl_AcceleratedShareRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_89755f5a-3433-49ba-a0e1-d69de65e20c6" xlink:to="loc_jbl_AcceleratedShareRepurchaseProgramMember_68e2f33f-3b9f-4960-a227-d0254f2c68bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_77e2ac76-4cdc-4bf6-8765-270aee406320" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_77e2ac76-4cdc-4bf6-8765-270aee406320" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_3ce2d294-d4ff-4267-98e5-7b397bfe18bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_3ce2d294-d4ff-4267-98e5-7b397bfe18bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_9be30ff0-c466-405c-a29d-9cac0433ea4d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_9be30ff0-c466-405c-a29d-9cac0433ea4d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_9a84cc04-5254-4e5e-bfe9-1963e76fd54a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_9a84cc04-5254-4e5e-bfe9-1963e76fd54a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_eb916c2a-9abd-4eca-8cca-3add0c3cbc76" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0eed2abe-ca74-489a-aab5-fa9bb934f441" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_eb916c2a-9abd-4eca-8cca-3add0c3cbc76" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_4ffc9467-c320-47b3-9564-1fee20a0b547" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_50a90926-e320-4942-b8cf-8dc368dc175f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_50a90926-e320-4942-b8cf-8dc368dc175f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_03c6b3e1-3423-48fc-b5e6-411af97113af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_03c6b3e1-3423-48fc-b5e6-411af97113af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_47682380-9799-4586-954c-5cc824ba4149" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_47682380-9799-4586-954c-5cc824ba4149" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_27254428-71a4-4fb0-8428-2dd29350b37f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_27254428-71a4-4fb0-8428-2dd29350b37f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_331ca885-54bd-4f90-a9d4-b87b0d9c5124" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d942e414-b23d-4368-9405-97c23680e1f5" xlink:to="loc_us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_331ca885-54bd-4f90-a9d4-b87b0d9c5124" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#ConcentrationofRiskandSegmentDataAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_a37942d4-8843-4410-a910-409736e9bc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_86e403c6-f827-4990-8b38-199097951ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_a37942d4-8843-4410-a910-409736e9bc2a" xlink:to="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_86e403c6-f827-4990-8b38-199097951ed5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_5e6a42d1-b2ac-47e7-8c21-878bbacf021a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_86e403c6-f827-4990-8b38-199097951ed5" xlink:to="loc_srt_MajorCustomersAxis_5e6a42d1-b2ac-47e7-8c21-878bbacf021a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_5e6a42d1-b2ac-47e7-8c21-878bbacf021a_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_5e6a42d1-b2ac-47e7-8c21-878bbacf021a" xlink:to="loc_srt_NameOfMajorCustomerDomain_5e6a42d1-b2ac-47e7-8c21-878bbacf021a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_48b58dec-18fa-4b12-8ba8-de3abfd6b2a8" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_5e6a42d1-b2ac-47e7-8c21-878bbacf021a" xlink:to="loc_srt_NameOfMajorCustomerDomain_48b58dec-18fa-4b12-8ba8-de3abfd6b2a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_FiveLargestCustomersMember_f77a94e4-4a4e-49e0-88c2-7d4036e2e54d" xlink:href="jbl-20240229.xsd#jbl_FiveLargestCustomersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_48b58dec-18fa-4b12-8ba8-de3abfd6b2a8" xlink:to="loc_jbl_FiveLargestCustomersMember_f77a94e4-4a4e-49e0-88c2-7d4036e2e54d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_EightyTwoCustomersMember_2c7e9167-6b8f-468b-80ca-e82f68ee4373" xlink:href="jbl-20240229.xsd#jbl_EightyTwoCustomersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_48b58dec-18fa-4b12-8ba8-de3abfd6b2a8" xlink:to="loc_jbl_EightyTwoCustomersMember_2c7e9167-6b8f-468b-80ca-e82f68ee4373" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_53624bc2-ef05-4afe-a335-8a38f7725f8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_86e403c6-f827-4990-8b38-199097951ed5" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_53624bc2-ef05-4afe-a335-8a38f7725f8b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_53624bc2-ef05-4afe-a335-8a38f7725f8b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_53624bc2-ef05-4afe-a335-8a38f7725f8b" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_53624bc2-ef05-4afe-a335-8a38f7725f8b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_185a15b5-2ae4-4d17-a655-46aefcf62e46" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_53624bc2-ef05-4afe-a335-8a38f7725f8b" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_185a15b5-2ae4-4d17-a655-46aefcf62e46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_c8a9d042-b900-4259-bebc-a72acbebc4f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_185a15b5-2ae4-4d17-a655-46aefcf62e46" xlink:to="loc_us-gaap_SalesRevenueNetMember_c8a9d042-b900-4259-bebc-a72acbebc4f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_dcf6e0e2-ae39-4fad-b68a-8908a365e110" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_86e403c6-f827-4990-8b38-199097951ed5" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_dcf6e0e2-ae39-4fad-b68a-8908a365e110" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_dcf6e0e2-ae39-4fad-b68a-8908a365e110_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_dcf6e0e2-ae39-4fad-b68a-8908a365e110" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_dcf6e0e2-ae39-4fad-b68a-8908a365e110_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_9c318455-3ead-4451-a512-6d49bc76c286" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_dcf6e0e2-ae39-4fad-b68a-8908a365e110" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_9c318455-3ead-4451-a512-6d49bc76c286" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_443b5759-3b16-4a0e-8416-802103926dbb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_9c318455-3ead-4451-a512-6d49bc76c286" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_443b5759-3b16-4a0e-8416-802103926dbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_1053bb09-301a-4c9c-b1ae-b909c3a7bcfd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_a37942d4-8843-4410-a910-409736e9bc2a" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_1053bb09-301a-4c9c-b1ae-b909c3a7bcfd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_ac28f920-b4df-4e19-805a-e611c8cf0eec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfCountriesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_a37942d4-8843-4410-a910-409736e9bc2a" xlink:to="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_ac28f920-b4df-4e19-805a-e611c8cf0eec" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataSegmentIncomeDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#ConcentrationofRiskandSegmentDataSegmentIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataSegmentIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_0a0cdbb2-5fdd-48ed-a26d-4b631e415a11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_599b18bd-e624-4d78-a8f0-6d334fd460d7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_0a0cdbb2-5fdd-48ed-a26d-4b631e415a11" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_599b18bd-e624-4d78-a8f0-6d334fd460d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_9d209aac-7acb-467b-8853-effca4bb613e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_599b18bd-e624-4d78-a8f0-6d334fd460d7" xlink:to="loc_srt_ConsolidationItemsAxis_9d209aac-7acb-467b-8853-effca4bb613e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_9d209aac-7acb-467b-8853-effca4bb613e_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_9d209aac-7acb-467b-8853-effca4bb613e" xlink:to="loc_srt_ConsolidationItemsDomain_9d209aac-7acb-467b-8853-effca4bb613e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_5306b659-c372-4fe1-854d-d8f7fb08d35b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_9d209aac-7acb-467b-8853-effca4bb613e" xlink:to="loc_srt_ConsolidationItemsDomain_5306b659-c372-4fe1-854d-d8f7fb08d35b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_2c153e7c-b3d2-4773-966b-230df9cd0a24" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5306b659-c372-4fe1-854d-d8f7fb08d35b" xlink:to="loc_us-gaap_OperatingSegmentsMember_2c153e7c-b3d2-4773-966b-230df9cd0a24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_e056125e-baa9-434f-a497-5f3907af2419" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_5306b659-c372-4fe1-854d-d8f7fb08d35b" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_e056125e-baa9-434f-a497-5f3907af2419" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_599b18bd-e624-4d78-a8f0-6d334fd460d7" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb" xlink:to="loc_us-gaap_SegmentDomain_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_31b090f1-dcdf-43f2-9529-eb0c3af16051" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9894f91c-3a6b-43d9-8f56-fdaa4656ccbb" xlink:to="loc_us-gaap_SegmentDomain_31b090f1-dcdf-43f2-9529-eb0c3af16051" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ElectronicsManufacturingServicesMember_f87fc41d-1218-4ce7-9837-b476051bfba4" xlink:href="jbl-20240229.xsd#jbl_ElectronicsManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_31b090f1-dcdf-43f2-9529-eb0c3af16051" xlink:to="loc_jbl_ElectronicsManufacturingServicesMember_f87fc41d-1218-4ce7-9837-b476051bfba4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_DiversifiedManufacturingServicesMember_ccbd8dde-284a-452b-9beb-aa73e0f77c4d" xlink:href="jbl-20240229.xsd#jbl_DiversifiedManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_31b090f1-dcdf-43f2-9529-eb0c3af16051" xlink:to="loc_jbl_DiversifiedManufacturingServicesMember_ccbd8dde-284a-452b-9beb-aa73e0f77c4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3a257a2b-f358-4ad9-98c6-e328b186bec7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_0a0cdbb2-5fdd-48ed-a26d-4b631e415a11" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3a257a2b-f358-4ad9-98c6-e328b186bec7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:href="jbl-20240229.xsd#jbl_ReconcilingItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_0a0cdbb2-5fdd-48ed-a26d-4b631e415a11" xlink:to="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_77b35505-edfd-496c-9a96-96f62e01de18" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_77b35505-edfd-496c-9a96-96f62e01de18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_74e0ef0d-0553-4afe-a158-797a74c190d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_74e0ef0d-0553-4afe-a158-797a74c190d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_69f2e7c0-37f7-48b8-902d-fe840a3890f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_us-gaap_RestructuringCharges_69f2e7c0-37f7-48b8-902d-fe840a3890f1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_5bc5154a-3ace-4343-94cb-9463b06e6c95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_5bc5154a-3ace-4343-94cb-9463b06e6c95" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AcquisitionAndDivestitureRelatedCharges_7f467b97-5cce-4661-8822-4d83c0d1e351" xlink:href="jbl-20240229.xsd#jbl_AcquisitionAndDivestitureRelatedCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_jbl_AcquisitionAndDivestitureRelatedCharges_7f467b97-5cce-4661-8822-4d83c0d1e351" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_OtherExpenseNetOfPeriodicBenefitCost_47a33ad4-df6e-49ab-bc37-e64c25251d97" xlink:href="jbl-20240229.xsd#jbl_OtherExpenseNetOfPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_jbl_OtherExpenseNetOfPeriodicBenefitCost_47a33ad4-df6e-49ab-bc37-e64c25251d97" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_424e9812-3fb0-4b4c-a570-67d53e2b2a2c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_jbl_ReconcilingItemsAbstract_7dec92ff-33a0-42d6-8072-51b295208334" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_424e9812-3fb0-4b4c-a570-67d53e2b2a2c" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataRevenuesDisaggregatedbySegmentDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#ConcentrationofRiskandSegmentDataRevenuesDisaggregatedbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataRevenuesDisaggregatedbySegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_54b2df2c-b262-4b58-b1ac-377b045b4c4e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_92da9277-5031-4982-8b39-0664bee62993" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_54b2df2c-b262-4b58-b1ac-377b045b4c4e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_92da9277-5031-4982-8b39-0664bee62993" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_24dac058-4d84-424a-8ed0-5377ad244d41" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_92da9277-5031-4982-8b39-0664bee62993" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_24dac058-4d84-424a-8ed0-5377ad244d41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_24dac058-4d84-424a-8ed0-5377ad244d41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_24dac058-4d84-424a-8ed0-5377ad244d41" xlink:to="loc_us-gaap_SegmentDomain_24dac058-4d84-424a-8ed0-5377ad244d41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_4abac097-8876-4872-9394-7824dfbdb320" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_24dac058-4d84-424a-8ed0-5377ad244d41" xlink:to="loc_us-gaap_SegmentDomain_4abac097-8876-4872-9394-7824dfbdb320" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ElectronicsManufacturingServicesMember_b3c01b24-1b1a-4398-b4f7-a7aad2deb954" xlink:href="jbl-20240229.xsd#jbl_ElectronicsManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4abac097-8876-4872-9394-7824dfbdb320" xlink:to="loc_jbl_ElectronicsManufacturingServicesMember_b3c01b24-1b1a-4398-b4f7-a7aad2deb954" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_DiversifiedManufacturingServicesMember_bea29150-3344-4b72-9d93-c78c27b92e3f" xlink:href="jbl-20240229.xsd#jbl_DiversifiedManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4abac097-8876-4872-9394-7824dfbdb320" xlink:to="loc_jbl_DiversifiedManufacturingServicesMember_bea29150-3344-4b72-9d93-c78c27b92e3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_de87664f-820b-4486-854f-514eec14b5dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_92da9277-5031-4982-8b39-0664bee62993" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_de87664f-820b-4486-854f-514eec14b5dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_de87664f-820b-4486-854f-514eec14b5dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_de87664f-820b-4486-854f-514eec14b5dc" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_de87664f-820b-4486-854f-514eec14b5dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1e39b1cc-7f9f-431b-ae31-081555aae82b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_de87664f-820b-4486-854f-514eec14b5dc" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1e39b1cc-7f9f-431b-ae31-081555aae82b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredAtPointInTimeMember_3ec7ec91-8424-408d-b964-14d401d0c3b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransferredAtPointInTimeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1e39b1cc-7f9f-431b-ae31-081555aae82b" xlink:to="loc_us-gaap_TransferredAtPointInTimeMember_3ec7ec91-8424-408d-b964-14d401d0c3b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredOverTimeMember_3afc25fd-8511-4b26-8e63-d88ae65491ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransferredOverTimeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1e39b1cc-7f9f-431b-ae31-081555aae82b" xlink:to="loc_us-gaap_TransferredOverTimeMember_3afc25fd-8511-4b26-8e63-d88ae65491ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_769b406b-de63-483f-895c-145b35f161b0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_54b2df2c-b262-4b58-b1ac-377b045b4c4e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_769b406b-de63-483f-895c-145b35f161b0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataForeignSourceRevenueDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#ConcentrationofRiskandSegmentDataForeignSourceRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/ConcentrationofRiskandSegmentDataForeignSourceRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_4fc3003d-60b2-4d8e-a10f-bb9cc0deba89" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_224d66a2-5d07-4041-903e-93eed28c5cac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4fc3003d-60b2-4d8e-a10f-bb9cc0deba89" xlink:to="loc_us-gaap_ConcentrationRiskTable_224d66a2-5d07-4041-903e-93eed28c5cac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_91e08d0b-bfd4-451b-ad73-7dade93c721c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_224d66a2-5d07-4041-903e-93eed28c5cac" xlink:to="loc_srt_StatementGeographicalAxis_91e08d0b-bfd4-451b-ad73-7dade93c721c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_91e08d0b-bfd4-451b-ad73-7dade93c721c_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_91e08d0b-bfd4-451b-ad73-7dade93c721c" xlink:to="loc_srt_SegmentGeographicalDomain_91e08d0b-bfd4-451b-ad73-7dade93c721c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_1b62e793-a075-4977-b809-c0030aff64cb" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_91e08d0b-bfd4-451b-ad73-7dade93c721c" xlink:to="loc_srt_SegmentGeographicalDomain_1b62e793-a075-4977-b809-c0030aff64cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_323b0546-12ec-4847-9e2f-3b996b6a80fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_1b62e793-a075-4977-b809-c0030aff64cb" xlink:to="loc_us-gaap_NonUsMember_323b0546-12ec-4847-9e2f-3b996b6a80fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_5f9ef38c-67ef-48f9-80d2-cd0d607f9448" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_224d66a2-5d07-4041-903e-93eed28c5cac" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_5f9ef38c-67ef-48f9-80d2-cd0d607f9448" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_5f9ef38c-67ef-48f9-80d2-cd0d607f9448_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_5f9ef38c-67ef-48f9-80d2-cd0d607f9448" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_5f9ef38c-67ef-48f9-80d2-cd0d607f9448_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8de47b15-daed-427b-80d9-33725127987e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_5f9ef38c-67ef-48f9-80d2-cd0d607f9448" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8de47b15-daed-427b-80d9-33725127987e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_f5778a9a-a8cf-4a05-8bc6-471f2318fe71" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_8de47b15-daed-427b-80d9-33725127987e" xlink:to="loc_us-gaap_SalesRevenueNetMember_f5778a9a-a8cf-4a05-8bc6-471f2318fe71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_414866b9-3d63-4393-a27e-536f509a3bca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_224d66a2-5d07-4041-903e-93eed28c5cac" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_414866b9-3d63-4393-a27e-536f509a3bca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_414866b9-3d63-4393-a27e-536f509a3bca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_414866b9-3d63-4393-a27e-536f509a3bca" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_414866b9-3d63-4393-a27e-536f509a3bca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_2946ac3b-7a65-4c66-9ccf-25454e5dc397" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_414866b9-3d63-4393-a27e-536f509a3bca" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_2946ac3b-7a65-4c66-9ccf-25454e5dc397" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_25e23c27-0d0d-4c1f-9ea7-25a47110b2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_2946ac3b-7a65-4c66-9ccf-25454e5dc397" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_25e23c27-0d0d-4c1f-9ea7-25a47110b2d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_8cb9f81d-f669-4ada-9d10-37f85a6555d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_4fc3003d-60b2-4d8e-a10f-bb9cc0deba89" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_8cb9f81d-f669-4ada-9d10-37f85a6555d2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesScheduleofRestructuringSeveranceandRelatedChargesDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#RestructuringSeveranceandRelatedChargesScheduleofRestructuringSeveranceandRelatedChargesDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesScheduleofRestructuringSeveranceandRelatedChargesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_70cdb28d-1796-46e7-baf3-acbffd78b4e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2b50cecd-3bf7-4727-8c8e-68322454f358" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_70cdb28d-1796-46e7-baf3-acbffd78b4e5" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2b50cecd-3bf7-4727-8c8e-68322454f358" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_9c73db22-e892-4a08-8491-8797eadffff1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2b50cecd-3bf7-4727-8c8e-68322454f358" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_9c73db22-e892-4a08-8491-8797eadffff1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_9c73db22-e892-4a08-8491-8797eadffff1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_9c73db22-e892-4a08-8491-8797eadffff1" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_9c73db22-e892-4a08-8491-8797eadffff1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_3243cf07-a746-4062-bceb-20e8bd81d261" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_9c73db22-e892-4a08-8491-8797eadffff1" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_3243cf07-a746-4062-bceb-20e8bd81d261" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_3cbadb4b-76af-42db-bc50-0255115f6517" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_3243cf07-a746-4062-bceb-20e8bd81d261" xlink:to="loc_us-gaap_EmployeeSeveranceMember_3cbadb4b-76af-42db-bc50-0255115f6517" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AssetWriteOffMember_45d016f2-3f8e-4e86-bbfa-47a81ad1dc97" xlink:href="jbl-20240229.xsd#jbl_AssetWriteOffMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_3243cf07-a746-4062-bceb-20e8bd81d261" xlink:to="loc_jbl_AssetWriteOffMember_45d016f2-3f8e-4e86-bbfa-47a81ad1dc97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_aecec495-a421-4292-8c5b-8361e45ee1bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_3243cf07-a746-4062-bceb-20e8bd81d261" xlink:to="loc_us-gaap_OtherRestructuringMember_aecec495-a421-4292-8c5b-8361e45ee1bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_6f8670e5-fad8-44bc-8072-21e4698e73de" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2b50cecd-3bf7-4727-8c8e-68322454f358" xlink:to="loc_srt_ConsolidationItemsAxis_6f8670e5-fad8-44bc-8072-21e4698e73de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_6f8670e5-fad8-44bc-8072-21e4698e73de_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_6f8670e5-fad8-44bc-8072-21e4698e73de" xlink:to="loc_srt_ConsolidationItemsDomain_6f8670e5-fad8-44bc-8072-21e4698e73de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_2ece1dc4-1e02-4480-b757-4075a3a6c36e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_6f8670e5-fad8-44bc-8072-21e4698e73de" xlink:to="loc_srt_ConsolidationItemsDomain_2ece1dc4-1e02-4480-b757-4075a3a6c36e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_fd74b8cb-c7b2-4bb5-9d65-3de3d264537c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_2ece1dc4-1e02-4480-b757-4075a3a6c36e" xlink:to="loc_us-gaap_OperatingSegmentsMember_fd74b8cb-c7b2-4bb5-9d65-3de3d264537c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_9499582f-372a-44a9-87d3-b7bebd992b75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_2ece1dc4-1e02-4480-b757-4075a3a6c36e" xlink:to="loc_us-gaap_CorporateNonSegmentMember_9499582f-372a-44a9-87d3-b7bebd992b75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_82c8c49f-7c3e-4623-928d-198c5189dea1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_2b50cecd-3bf7-4727-8c8e-68322454f358" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_82c8c49f-7c3e-4623-928d-198c5189dea1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_82c8c49f-7c3e-4623-928d-198c5189dea1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_82c8c49f-7c3e-4623-928d-198c5189dea1" xlink:to="loc_us-gaap_SegmentDomain_82c8c49f-7c3e-4623-928d-198c5189dea1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_65b211ec-c361-4782-b7cc-488258236191" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_82c8c49f-7c3e-4623-928d-198c5189dea1" xlink:to="loc_us-gaap_SegmentDomain_65b211ec-c361-4782-b7cc-488258236191" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ElectronicsManufacturingServicesMember_73b33c7e-4511-46a9-b072-851b92d843d1" xlink:href="jbl-20240229.xsd#jbl_ElectronicsManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_65b211ec-c361-4782-b7cc-488258236191" xlink:to="loc_jbl_ElectronicsManufacturingServicesMember_73b33c7e-4511-46a9-b072-851b92d843d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_DiversifiedManufacturingServicesMember_7b6fdc7e-ff58-4938-a7bd-8ed0706ff3bb" xlink:href="jbl-20240229.xsd#jbl_DiversifiedManufacturingServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_65b211ec-c361-4782-b7cc-488258236191" xlink:to="loc_jbl_DiversifiedManufacturingServicesMember_7b6fdc7e-ff58-4938-a7bd-8ed0706ff3bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_c71d16de-c54e-4b36-a96c-7f01ce331a91" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_70cdb28d-1796-46e7-baf3-acbffd78b4e5" xlink:to="loc_us-gaap_RestructuringCharges_c71d16de-c54e-4b36-a96c-7f01ce331a91" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#RestructuringSeveranceandRelatedChargesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_8fbd12aa-1df0-4323-8b41-757549959519" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_ac041e00-cd17-43f7-828f-9d53c403de75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_8fbd12aa-1df0-4323-8b41-757549959519" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_ac041e00-cd17-43f7-828f-9d53c403de75" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_6b833af1-e543-42f3-81d8-f3bcc699786a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_ac041e00-cd17-43f7-828f-9d53c403de75" xlink:to="loc_us-gaap_RestructuringPlanAxis_6b833af1-e543-42f3-81d8-f3bcc699786a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_6b833af1-e543-42f3-81d8-f3bcc699786a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_6b833af1-e543-42f3-81d8-f3bcc699786a" xlink:to="loc_us-gaap_RestructuringPlanDomain_6b833af1-e543-42f3-81d8-f3bcc699786a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_58da820a-a18a-46c8-a58a-f8fed30f7db5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_6b833af1-e543-42f3-81d8-f3bcc699786a" xlink:to="loc_us-gaap_RestructuringPlanDomain_58da820a-a18a-46c8-a58a-f8fed30f7db5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_A2024RestructuringPlanMember_51e5ae06-5855-4c16-926d-763b3d9ff107" xlink:href="jbl-20240229.xsd#jbl_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_58da820a-a18a-46c8-a58a-f8fed30f7db5" xlink:to="loc_jbl_A2024RestructuringPlanMember_51e5ae06-5855-4c16-926d-763b3d9ff107" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_8dffe56d-dd66-4b74-b228-84be0b7674c7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_ac041e00-cd17-43f7-828f-9d53c403de75" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_8dffe56d-dd66-4b74-b228-84be0b7674c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_8dffe56d-dd66-4b74-b228-84be0b7674c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_8dffe56d-dd66-4b74-b228-84be0b7674c7" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_8dffe56d-dd66-4b74-b228-84be0b7674c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_f8648d07-897e-4610-b918-04487ea3d10e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_8dffe56d-dd66-4b74-b228-84be0b7674c7" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_f8648d07-897e-4610-b918-04487ea3d10e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_3ba4cb21-91ef-460b-b448-5940222c0ef2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_f8648d07-897e-4610-b918-04487ea3d10e" xlink:to="loc_us-gaap_EmployeeSeveranceMember_3ba4cb21-91ef-460b-b448-5940222c0ef2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AssetWriteOffMember_dfb90ce3-446e-45cc-b70e-e89ab8efce4c" xlink:href="jbl-20240229.xsd#jbl_AssetWriteOffMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_f8648d07-897e-4610-b918-04487ea3d10e" xlink:to="loc_jbl_AssetWriteOffMember_dfb90ce3-446e-45cc-b70e-e89ab8efce4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractTerminationMember_19758503-0a3e-4dc9-9ce5-268bd9e00532" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_f8648d07-897e-4610-b918-04487ea3d10e" xlink:to="loc_us-gaap_ContractTerminationMember_19758503-0a3e-4dc9-9ce5-268bd9e00532" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_581f2b42-eca9-42b2-b29d-c0c92168db87" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_ac041e00-cd17-43f7-828f-9d53c403de75" xlink:to="loc_srt_RangeAxis_581f2b42-eca9-42b2-b29d-c0c92168db87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_581f2b42-eca9-42b2-b29d-c0c92168db87_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_581f2b42-eca9-42b2-b29d-c0c92168db87" xlink:to="loc_srt_RangeMember_581f2b42-eca9-42b2-b29d-c0c92168db87_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f07b5717-dfe3-4ed2-94f8-6500745d0def" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_581f2b42-eca9-42b2-b29d-c0c92168db87" xlink:to="loc_srt_RangeMember_f07b5717-dfe3-4ed2-94f8-6500745d0def" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_a0adde86-88b8-4623-b100-379a473bc2a3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f07b5717-dfe3-4ed2-94f8-6500745d0def" xlink:to="loc_srt_MinimumMember_a0adde86-88b8-4623-b100-379a473bc2a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5e067982-512c-4746-913a-5c492471b4b8" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f07b5717-dfe3-4ed2-94f8-6500745d0def" xlink:to="loc_srt_MaximumMember_5e067982-512c-4746-913a-5c492471b4b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_11d7eb69-3e88-49cd-850f-ab646cca9dc9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_8fbd12aa-1df0-4323-8b41-757549959519" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_11d7eb69-3e88-49cd-850f-ab646cca9dc9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesLiabilityActivityDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#RestructuringSeveranceandRelatedChargesLiabilityActivityDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/RestructuringSeveranceandRelatedChargesLiabilityActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_e3ebd647-cb4f-4d4d-960a-771e4b2ab550" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_835bd5bc-afee-4837-b74e-ebe8c1efd759" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_e3ebd647-cb4f-4d4d-960a-771e4b2ab550" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_835bd5bc-afee-4837-b74e-ebe8c1efd759" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_835bd5bc-afee-4837-b74e-ebe8c1efd759" xlink:to="loc_us-gaap_RestructuringPlanAxis_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15" xlink:to="loc_us-gaap_RestructuringPlanDomain_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_77d34a40-684a-4c1e-b4f3-64a1469ac62d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_2d555dcc-abd0-4dcf-a6ae-d5b419b72d15" xlink:to="loc_us-gaap_RestructuringPlanDomain_77d34a40-684a-4c1e-b4f3-64a1469ac62d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_A2024RestructuringPlanMember_9bf5b9a8-60c6-437e-8f22-96babc0d0ace" xlink:href="jbl-20240229.xsd#jbl_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_77d34a40-684a-4c1e-b4f3-64a1469ac62d" xlink:to="loc_jbl_A2024RestructuringPlanMember_9bf5b9a8-60c6-437e-8f22-96babc0d0ace" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_e08f081f-b8bd-492e-b2ff-ad87523cece3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_835bd5bc-afee-4837-b74e-ebe8c1efd759" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_e08f081f-b8bd-492e-b2ff-ad87523cece3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_e08f081f-b8bd-492e-b2ff-ad87523cece3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_e08f081f-b8bd-492e-b2ff-ad87523cece3" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_e08f081f-b8bd-492e-b2ff-ad87523cece3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_e08f081f-b8bd-492e-b2ff-ad87523cece3" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_725da843-6973-469e-9148-209815e0d57e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:to="loc_us-gaap_EmployeeSeveranceMember_725da843-6973-469e-9148-209815e0d57e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_LeaseCostsMember_099bfec9-30bf-45c9-8701-421ba51c8125" xlink:href="jbl-20240229.xsd#jbl_LeaseCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:to="loc_jbl_LeaseCostsMember_099bfec9-30bf-45c9-8701-421ba51c8125" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_AssetWriteOffMember_097e098d-6848-4b97-bb60-15299ab933ad" xlink:href="jbl-20240229.xsd#jbl_AssetWriteOffMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:to="loc_jbl_AssetWriteOffMember_097e098d-6848-4b97-bb60-15299ab933ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_d075b91c-aca9-42de-9f29-a92947ca676b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_56eb576d-927e-4789-ae0e-18c5cd85d0f6" xlink:to="loc_us-gaap_OtherRestructuringMember_d075b91c-aca9-42de-9f29-a92947ca676b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_e3ebd647-cb4f-4d4d-960a-771e4b2ab550" xlink:to="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_40702f97-4499-439c-8058-34b9ebf09d8c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:to="loc_us-gaap_RestructuringReserve_40702f97-4499-439c-8058-34b9ebf09d8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_a088e4e8-9510-40b4-9c7e-f4954b760886" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:to="loc_us-gaap_RestructuringCharges_a088e4e8-9510-40b4-9c7e-f4954b760886" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_RestructuringChargesAssetWriteOffAndOtherNonCashCostsCredits_306a9862-d83c-4a96-9ae0-a94557f1c3be" xlink:href="jbl-20240229.xsd#jbl_RestructuringChargesAssetWriteOffAndOtherNonCashCostsCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:to="loc_jbl_RestructuringChargesAssetWriteOffAndOtherNonCashCostsCredits_306a9862-d83c-4a96-9ae0-a94557f1c3be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_7feb77bf-cf58-49b0-ac80-76cefa6d43d6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_41573789-863c-4d20-bb3d-ec5484f123be" xlink:to="loc_us-gaap_PaymentsForRestructuring_7feb77bf-cf58-49b0-ac80-76cefa6d43d6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_cb54264d-04b3-444b-998d-cbc270dd453d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/EarningsPerShareandDividendsEarningsPerShareDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#EarningsPerShareandDividendsEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/EarningsPerShareandDividendsEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_8754159b-dac1-44d6-a707-7d43a12dc2f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_829af366-9b70-4f47-a6ac-6cd580fc2cd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_8754159b-dac1-44d6-a707-7d43a12dc2f2" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_829af366-9b70-4f47-a6ac-6cd580fc2cd6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_089f0831-8e75-4e0d-845f-091bf9128008" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_829af366-9b70-4f47-a6ac-6cd580fc2cd6" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_089f0831-8e75-4e0d-845f-091bf9128008" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_089f0831-8e75-4e0d-845f-091bf9128008_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_089f0831-8e75-4e0d-845f-091bf9128008" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_089f0831-8e75-4e0d-845f-091bf9128008_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_b47ae0b6-556d-4a72-ac75-110dadc4274d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_089f0831-8e75-4e0d-845f-091bf9128008" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_b47ae0b6-556d-4a72-ac75-110dadc4274d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_88e85182-aa44-40f0-8fb3-93e622d86844" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_b47ae0b6-556d-4a72-ac75-110dadc4274d" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_88e85182-aa44-40f0-8fb3-93e622d86844" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_c3d63730-652b-4dc4-8c52-46cd044e0b7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_8754159b-dac1-44d6-a707-7d43a12dc2f2" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_c3d63730-652b-4dc4-8c52-46cd044e0b7b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/BusinessAcquisitionsandDivestituresAdditionalInformationDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#BusinessAcquisitionsandDivestituresAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/BusinessAcquisitionsandDivestituresAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_a7d8ec05-3853-41d8-9f0f-19ad204235c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_a7d8ec05-3853-41d8-9f0f-19ad204235c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a7d8ec05-3853-41d8-9f0f-19ad204235c6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a7d8ec05-3853-41d8-9f0f-19ad204235c6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a7d8ec05-3853-41d8-9f0f-19ad204235c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_bc6d168a-3a52-4b74-92e5-6453a505ce8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a7d8ec05-3853-41d8-9f0f-19ad204235c6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_bc6d168a-3a52-4b74-92e5-6453a505ce8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_ProcureAbilityIncMember_7b669dca-f6f6-434a-bb50-1ddf77dbac6d" xlink:href="jbl-20240229.xsd#jbl_ProcureAbilityIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_bc6d168a-3a52-4b74-92e5-6453a505ce8e" xlink:to="loc_jbl_ProcureAbilityIncMember_7b669dca-f6f6-434a-bb50-1ddf77dbac6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_83e3a4e4-7e34-4902-bda2-6acead0fe812" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_83e3a4e4-7e34-4902-bda2-6acead0fe812" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_83e3a4e4-7e34-4902-bda2-6acead0fe812_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_83e3a4e4-7e34-4902-bda2-6acead0fe812" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_83e3a4e4-7e34-4902-bda2-6acead0fe812_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_6eed60d4-96cb-41a2-af7c-3d1b4a862667" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_83e3a4e4-7e34-4902-bda2-6acead0fe812" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_6eed60d4-96cb-41a2-af7c-3d1b4a862667" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_e141c85a-0f25-45e9-9904-8c7bebd45a06" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_6eed60d4-96cb-41a2-af7c-3d1b4a862667" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_e141c85a-0f25-45e9-9904-8c7bebd45a06" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_afffded0-a429-419d-99bb-467f137d8dcb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_afffded0-a429-419d-99bb-467f137d8dcb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_afffded0-a429-419d-99bb-467f137d8dcb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_afffded0-a429-419d-99bb-467f137d8dcb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_afffded0-a429-419d-99bb-467f137d8dcb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7c83b498-f561-4368-a548-98f480cd8474" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_afffded0-a429-419d-99bb-467f137d8dcb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7c83b498-f561-4368-a548-98f480cd8474" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_MobilityBusinessMember_06ee2c66-25d0-4743-8bc1-1dcd3a1e9dc1" xlink:href="jbl-20240229.xsd#jbl_MobilityBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7c83b498-f561-4368-a548-98f480cd8474" xlink:to="loc_jbl_MobilityBusinessMember_06ee2c66-25d0-4743-8bc1-1dcd3a1e9dc1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_375c2b39-7306-405b-bb90-0e3d460fc3cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_29e96634-6c38-43a1-99ff-99a1ef7be766" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_375c2b39-7306-405b-bb90-0e3d460fc3cf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_375c2b39-7306-405b-bb90-0e3d460fc3cf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_375c2b39-7306-405b-bb90-0e3d460fc3cf" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_375c2b39-7306-405b-bb90-0e3d460fc3cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_75104e01-ad28-442e-bef8-e01f630c9d6f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_375c2b39-7306-405b-bb90-0e3d460fc3cf" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_75104e01-ad28-442e-bef8-e01f630c9d6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_622801b7-260e-4267-b7b4-0a25c582e6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_75104e01-ad28-442e-bef8-e01f630c9d6f" xlink:to="loc_us-gaap_TradeNamesMember_622801b7-260e-4267-b7b4-0a25c582e6d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_49a5358d-1ea4-46ee-905a-22ba239dbd21" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_49a5358d-1ea4-46ee-905a-22ba239dbd21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_68805099-2242-4533-8eec-a4d8dff561b3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_68805099-2242-4533-8eec-a4d8dff561b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_689cdfba-2caa-40de-bd16-147ba914fc1f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_689cdfba-2caa-40de-bd16-147ba914fc1f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_9d424d70-66fb-4297-b787-1f32b8bae545" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_Goodwill_9d424d70-66fb-4297-b787-1f32b8bae545" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_fa7d0ea2-79bc-4a65-8e07-57a4bad19c6b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_fa7d0ea2-79bc-4a65-8e07-57a4bad19c6b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_b7436f90-7505-4dd8-bc32-ee205acc8f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_b7436f90-7505-4dd8-bc32-ee205acc8f6a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_DisposalGroupIncludingDiscontinuedOperationAssetsNet_9924d9fd-3aed-4188-8f56-e278bb7cc62f" xlink:href="jbl-20240229.xsd#jbl_DisposalGroupIncludingDiscontinuedOperationAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_jbl_DisposalGroupIncludingDiscontinuedOperationAssetsNet_9924d9fd-3aed-4188-8f56-e278bb7cc62f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_3692dfab-b397-462b-a888-aca479d9d7a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_3692dfab-b397-462b-a888-aca479d9d7a1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_DisposalGroupIncludingDiscontinuedOperationTransactionExitAndDisposalCosts_dcd2166b-e5c8-4d5c-afca-604b9b652fa4" xlink:href="jbl-20240229.xsd#jbl_DisposalGroupIncludingDiscontinuedOperationTransactionExitAndDisposalCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_jbl_DisposalGroupIncludingDiscontinuedOperationTransactionExitAndDisposalCosts_dcd2166b-e5c8-4d5c-afca-604b9b652fa4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_c97d073b-924e-465c-9d3d-c89bd75ee2c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_c97d073b-924e-465c-9d3d-c89bd75ee2c9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_5533474c-2599-46ac-8d1d-e4510b9c1b84" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_259dd199-883c-44b5-a8f1-0ec71eba6df3" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_5533474c-2599-46ac-8d1d-e4510b9c1b84" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/FairValueMeasurementsFairValueMeasurementsonaRecurringBasisDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#FairValueMeasurementsFairValueMeasurementsonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/FairValueMeasurementsFairValueMeasurementsonaRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_90c1f035-4726-4324-8031-4f11241cddda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_90c1f035-4726-4324-8031-4f11241cddda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_90c1f035-4726-4324-8031-4f11241cddda_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_90c1f035-4726-4324-8031-4f11241cddda" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_90c1f035-4726-4324-8031-4f11241cddda_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1e6298ce-cd06-4eaa-a6f0-6dade52532e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_90c1f035-4726-4324-8031-4f11241cddda" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1e6298ce-cd06-4eaa-a6f0-6dade52532e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_f30f48cb-0860-40f5-8c8b-b4f36e9edc00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_1e6298ce-cd06-4eaa-a6f0-6dade52532e3" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_f30f48cb-0860-40f5-8c8b-b4f36e9edc00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0793a7f5-082a-44af-9ffa-f37fb8d52fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0793a7f5-082a-44af-9ffa-f37fb8d52fd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0793a7f5-082a-44af-9ffa-f37fb8d52fd2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0793a7f5-082a-44af-9ffa-f37fb8d52fd2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0793a7f5-082a-44af-9ffa-f37fb8d52fd2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6d5073e1-7c6f-41f7-8b0b-e16827b76b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0793a7f5-082a-44af-9ffa-f37fb8d52fd2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6d5073e1-7c6f-41f7-8b0b-e16827b76b2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_38adf9ca-8c57-47fb-a2dd-daa419ba84f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6d5073e1-7c6f-41f7-8b0b-e16827b76b2b" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_38adf9ca-8c57-47fb-a2dd-daa419ba84f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_bc440d79-fe28-498c-bd1b-3afcc3ae3054" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6d5073e1-7c6f-41f7-8b0b-e16827b76b2b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_bc440d79-fe28-498c-bd1b-3afcc3ae3054" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_efa794da-e4f7-4aa1-ba16-5e86e7c889d8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:to="loc_us-gaap_HedgingDesignationAxis_efa794da-e4f7-4aa1-ba16-5e86e7c889d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_efa794da-e4f7-4aa1-ba16-5e86e7c889d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_efa794da-e4f7-4aa1-ba16-5e86e7c889d8" xlink:to="loc_us-gaap_HedgingDesignationDomain_efa794da-e4f7-4aa1-ba16-5e86e7c889d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_a5b92ee7-53d1-4068-b5d0-c6c1bc876a12" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_efa794da-e4f7-4aa1-ba16-5e86e7c889d8" xlink:to="loc_us-gaap_HedgingDesignationDomain_a5b92ee7-53d1-4068-b5d0-c6c1bc876a12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_0e37d14a-41a8-4245-83de-fe55bc96156e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_a5b92ee7-53d1-4068-b5d0-c6c1bc876a12" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_0e37d14a-41a8-4245-83de-fe55bc96156e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_7920f850-1529-4f77-8550-8cf5417e6266" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_a5b92ee7-53d1-4068-b5d0-c6c1bc876a12" xlink:to="loc_us-gaap_NondesignatedMember_7920f850-1529-4f77-8550-8cf5417e6266" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_3a675378-7bff-4bda-ba75-e608698132de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_81558ba8-b053-430a-8316-743bcbd01fa2" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_3a675378-7bff-4bda-ba75-e608698132de" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3a675378-7bff-4bda-ba75-e608698132de_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3a675378-7bff-4bda-ba75-e608698132de" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3a675378-7bff-4bda-ba75-e608698132de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c90a6390-ac06-4070-8027-bb202fd93be4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3a675378-7bff-4bda-ba75-e608698132de" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c90a6390-ac06-4070-8027-bb202fd93be4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_9bfeebd3-8bae-4e47-86f4-d605867c2fc8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c90a6390-ac06-4070-8027-bb202fd93be4" xlink:to="loc_us-gaap_ForeignExchangeContractMember_9bfeebd3-8bae-4e47-86f4-d605867c2fc8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_167eb54c-540e-4dc1-8db3-6bdfa24830b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c90a6390-ac06-4070-8027-bb202fd93be4" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_167eb54c-540e-4dc1-8db3-6bdfa24830b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_479203dc-cfcd-45a7-baac-86a7ae639f68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_479203dc-cfcd-45a7-baac-86a7ae639f68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_df1b6205-66e6-4bbe-bff7-0d41c9abe0bc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:to="loc_us-gaap_InvestmentsFairValueDisclosure_df1b6205-66e6-4bbe-bff7-0d41c9abe0bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_0a1e1ed2-c772-4600-8c2a-3509d407db8c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_0a1e1ed2-c772-4600-8c2a-3509d407db8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_337e5c3c-b6c7-4266-a543-85d4db02a1d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_57c86606-8819-4bc8-984c-867eb648e888" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_337e5c3c-b6c7-4266-a543-85d4db02a1d5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.jabil.com/role/FairValueMeasurementsFairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="jbl-20240229.xsd#FairValueMeasurementsFairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.jabil.com/role/FairValueMeasurementsFairValueofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_4bd2d403-7612-448c-92d0-b05218e91aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_4bd2d403-7612-448c-92d0-b05218e91aaf" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_7d3d3694-1b87-4d00-aed0-390da4160ab5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_7d3d3694-1b87-4d00-aed0-390da4160ab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_7d3d3694-1b87-4d00-aed0-390da4160ab5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7d3d3694-1b87-4d00-aed0-390da4160ab5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_7d3d3694-1b87-4d00-aed0-390da4160ab5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6c4ede9b-b8b4-429a-aa9a-b062bcc6c95b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7d3d3694-1b87-4d00-aed0-390da4160ab5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6c4ede9b-b8b4-429a-aa9a-b062bcc6c95b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_a35110c7-0aff-44f6-acaf-8fe0a011e80f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6c4ede9b-b8b4-429a-aa9a-b062bcc6c95b" xlink:to="loc_us-gaap_SeniorNotesMember_a35110c7-0aff-44f6-acaf-8fe0a011e80f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_57ffdd43-9d74-4534-956c-0a9543240690" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_57ffdd43-9d74-4534-956c-0a9543240690" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_57ffdd43-9d74-4534-956c-0a9543240690_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_57ffdd43-9d74-4534-956c-0a9543240690" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_57ffdd43-9d74-4534-956c-0a9543240690_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2bab50ee-76ed-4d18-8374-6fb047324b16" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_57ffdd43-9d74-4534-956c-0a9543240690" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2bab50ee-76ed-4d18-8374-6fb047324b16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6c425516-9444-4dbb-b27b-ac2b9eb01144" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2bab50ee-76ed-4d18-8374-6fb047324b16" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6c425516-9444-4dbb-b27b-ac2b9eb01144" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1ec9b50c-8be2-4f2a-b450-6fd582a95122" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6c425516-9444-4dbb-b27b-ac2b9eb01144" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1ec9b50c-8be2-4f2a-b450-6fd582a95122" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3b0d8c07-5178-4767-9e18-131dc57930de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6c425516-9444-4dbb-b27b-ac2b9eb01144" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3b0d8c07-5178-4767-9e18-131dc57930de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_337bf885-7d4c-4d28-999f-609f49ad2b04" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_337bf885-7d4c-4d28-999f-609f49ad2b04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_337bf885-7d4c-4d28-999f-609f49ad2b04_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_337bf885-7d4c-4d28-999f-609f49ad2b04" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_337bf885-7d4c-4d28-999f-609f49ad2b04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17466478-ad7f-4223-88fb-b2d1d9f8180b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_337bf885-7d4c-4d28-999f-609f49ad2b04" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17466478-ad7f-4223-88fb-b2d1d9f8180b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_825e132a-f037-47e1-a9a5-c4f208501fd9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17466478-ad7f-4223-88fb-b2d1d9f8180b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_825e132a-f037-47e1-a9a5-c4f208501fd9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a16e0d95-c754-4a7e-be00-1d4360006eb6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_dcc1be62-3b53-4504-aed4-3a56be214764" xlink:to="loc_us-gaap_DebtInstrumentAxis_a16e0d95-c754-4a7e-be00-1d4360006eb6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a16e0d95-c754-4a7e-be00-1d4360006eb6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a16e0d95-c754-4a7e-be00-1d4360006eb6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a16e0d95-c754-4a7e-be00-1d4360006eb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a16e0d95-c754-4a7e-be00-1d4360006eb6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2028Member_1e093a96-3328-4295-9c16-f61791e27d48" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueJanuary2028Member_1e093a96-3328-4295-9c16-f61791e27d48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2030Member_3c5c0a90-6539-4287-b957-ca7051301fc9" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueJanuary2030Member_3c5c0a90-6539-4287-b957-ca7051301fc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueJanuary2031Member_f66fe7c3-ca5f-408e-9ab1-162f4f517a84" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueJanuary2031Member_f66fe7c3-ca5f-408e-9ab1-162f4f517a84" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueApril2026Member_2785b99c-22a1-4b25-a242-4dd957abeae1" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueApril2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueApril2026Member_2785b99c-22a1-4b25-a242-4dd957abeae1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueMay2027Member_d93d3b9f-57e6-47ac-a2f3-50e1153a1d92" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueMay2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueMay2027Member_d93d3b9f-57e6-47ac-a2f3-50e1153a1d92" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_SeniorNotesDueFebruary2029Member_b863733b-3487-4405-9c6d-2c81ce91774e" xlink:href="jbl-20240229.xsd#jbl_SeniorNotesDueFebruary2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_922ed55f-50bf-4a77-a7d0-3f7e89a41c11" xlink:to="loc_jbl_SeniorNotesDueFebruary2029Member_b863733b-3487-4405-9c6d-2c81ce91774e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_d73ec593-9faa-4627-b88a-2e35e80e162d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_4bd2d403-7612-448c-92d0-b05218e91aaf" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_d73ec593-9faa-4627-b88a-2e35e80e162d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_9b876269-d186-4e54-8540-5bee6938eca5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_4bd2d403-7612-448c-92d0-b05218e91aaf" xlink:to="loc_us-gaap_LongTermDebt_9b876269-d186-4e54-8540-5bee6938eca5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_5ac03360-2963-4043-be7d-1bfce3902a03" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_4bd2d403-7612-448c-92d0-b05218e91aaf" xlink:to="loc_us-gaap_LongTermDebtFairValue_5ac03360-2963-4043-be7d-1bfce3902a03" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#AwardTypeOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_EmployeeStockMember" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_TimeBasedRestrictedStockUnitsMember_0be2ee05-7cf1-4f61-a860-c5947c739300" xlink:href="jbl-20240229.xsd#jbl_TimeBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_jbl_TimeBasedRestrictedStockUnitsMember_0be2ee05-7cf1-4f61-a860-c5947c739300" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_PerformanceSharesMember" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_MarketBasedRestrictedStockUnitsMember_a5d6168e-9d2a-462c-ad4a-2171155fd897" xlink:href="jbl-20240229.xsd#jbl_MarketBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_jbl_MarketBasedRestrictedStockUnitsMember_a5d6168e-9d2a-462c-ad4a-2171155fd897" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_jbl_Mr.KennethWilsonMember_7580dc05-8297-4599-8df8-6d518bb49126" xlink:href="jbl-20240229.xsd#jbl_Mr.KennethWilsonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_jbl_Mr.KennethWilsonMember_7580dc05-8297-4599-8df8-6d518bb49126" xlink:type="arc" order="2"/>
  </link:definitionLink>
</link:linkbase>
