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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2023 Workiva-->
<!--r:a457e414-47f5-4474-93b0-cdf4ab8a11b6,g:3e17fe5f-2a19-4a84-90ef-67d0c4fcc53a-->
<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.azz.com/role/DocumentandEntityInformationDocumentandEntityInformation" xlink:type="simple" xlink:href="azz-20230707.xsd#DocumentandEntityInformationDocumentandEntityInformation"/>
  <link:definitionLink xlink:role="http://www.azz.com/role/DocumentandEntityInformationDocumentandEntityInformation" xlink:type="extended" id="i25bd1c8aaa724874b61137b11492a296_DocumentandEntityInformationDocumentandEntityInformation">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_2cdf3daf-6a5c-4062-951b-33a12f2cf4d8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_026833bc-016f-4fb1-ab5f-db9666031a25" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_2cdf3daf-6a5c-4062-951b-33a12f2cf4d8" xlink:to="loc_dei_DocumentPeriodEndDate_026833bc-016f-4fb1-ab5f-db9666031a25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_48262983-b668-4c7b-bfe3-b8ac5348f74b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_2cdf3daf-6a5c-4062-951b-33a12f2cf4d8" xlink:to="loc_dei_DocumentInformationTable_48262983-b668-4c7b-bfe3-b8ac5348f74b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
  </link:definitionLink>
</link:linkbase>
