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    <link:label id="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC_negatedLabel_en-US" xlink:label="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisitions of customer relationships, customer inducements and data center lease-based intangibles</link:label>
    <link:label id="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC_label_en-US" xlink:label="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs</link:label>
    <link:label id="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC_documentation_en-US" xlink:label="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts" xlink:label="loc_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_4DE0D2378593B2A61C7CEF4FF007D7AC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from Divestments</link:label>
    <link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Divestiture of Businesses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D" xlink:to="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C22843FEB9804AA5A05EEF4FF007283D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireInterestInJointVenture_4CD86E358736A2EFB946EF4FF007FD2B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInterestInJointVenture_4CD86E358736A2EFB946EF4FF007FD2B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Investments in joint ventures (see Note 10)</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireInterestInJointVenture_4CD86E358736A2EFB946EF4FF007FD2B_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInterestInJointVenture_4CD86E358736A2EFB946EF4FF007FD2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Interest in Joint Venture</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_5335FE87D2B9B72EC68EEF4FF0079BFB_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_5335FE87D2B9B72EC68EEF4FF0079BFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sales of property and equipment and other, net</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_5335FE87D2B9B72EC68EEF4FF0079BFB_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfProductiveAssets_5335FE87D2B9B72EC68EEF4FF0079BFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Productive Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_5335FE87D2B9B72EC68EEF4FF0079BFB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Investing Activities&#8212;Continuing Operations</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_81C29F801E2FE09D3124EF4FF00858B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109_terseLabel_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Investing Activities&#8212;Discontinued Operations</link:label>
    <link:label id="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109_label_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Provided by (Used in) Investing Activities, Discontinued Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109" xlink:to="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_37070844B9C64173E612EF4FF0086109" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Investing Activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D041F2D6750CA3D26CCDEF4FF0085B07" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Financing Activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4D6D833423C859975AB3EF4FF0088331" xlink:type="arc" />
    <link:label id="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923_negatedLabel_en-US" xlink:label="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayment of revolving credit facility, term loan facilities and other debt</link:label>
    <link:label id="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923_label_en-US" xlink:label="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Secured Debt Short Term and Long Term</link:label>
    <link:label id="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923_documentation_en-US" xlink:label="lab_irm_RepaymentsOfSecuredDebtShortTermAndLongTerm_375B6A1D5A133BE7AEB7EF4FF0089923" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash outflow to repay long-term and short-term debt that is wholly or partially secured by collateral.</link:label>
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    <link:label id="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5_terseLabel_en-US" xlink:label="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from revolving credit facility, term loan facilities and other debt</link:label>
    <link:label id="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5_label_en-US" xlink:label="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Secured Debt Short Term and Long Term</link:label>
    <link:label id="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5_documentation_en-US" xlink:label="lab_irm_ProceedsFromIssuanceOfSecuredDebtShortTermAndLongTerm_B50BD42765C801BC9869EF4FF00901E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash inflow from amounts received from issuance of long-term and short term debt that is wholly or partially secured by collateral.</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_9410CE3E7EAAF230533EEF4FF0092D8E_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_9410CE3E7EAAF230533EEF4FF0092D8E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from sales of senior notes</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_9410CE3E7EAAF230533EEF4FF0092D8E_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_9410CE3E7EAAF230533EEF4FF0092D8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Senior Long-term Debt</link:label>
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    <link:label id="lab_irm_BorrowingspaymentsUnderCashPools_9ECE1047299A4AC4B30BEF4FF009B326_negatedTerseLabel_en-US" xlink:label="lab_irm_BorrowingspaymentsUnderCashPools_9ECE1047299A4AC4B30BEF4FF009B326" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Debit (payments) balances under cash pools</link:label>
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    <link:label id="lab_irm_BorrowingspaymentsUnderCashPools_9ECE1047299A4AC4B30BEF4FF009B326_documentation_en-US" xlink:label="lab_irm_BorrowingspaymentsUnderCashPools_9ECE1047299A4AC4B30BEF4FF009B326" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Borrowings (payments) Under Cash Pools</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_6B763E245BE852279AE5BAACE8050CFA" xlink:type="locator" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_B22BB041D3DE5EC1AAA1CDC088E5F025" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_B22BB041D3DE5EC1AAA1CDC088E5F025" xlink:to="lab_dei_DocumentFiscalYearFocus_B22BB041D3DE5EC1AAA1CDC088E5F025" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_42FB1D3B6F3F973C12F72B07742D3A36_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_5B630F260773534FB68381A07D97A8B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_5B630F260773534FB68381A07D97A8B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_5B630F260773534FB68381A07D97A8B1" xlink:to="lab_dei_DocumentFiscalPeriodFocus_5B630F260773534FB68381A07D97A8B1" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_B7A6A8C3BF5C1C2F94C72B07742DF0BE_label_en-US" xlink:label="lab_dei_AmendmentFlag_0F5D460C91C359E5815A584CC9D741A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_0F5D460C91C359E5815A584CC9D741A6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6E93EF3A30BDA99A3658BA614D4A92AB" xlink:type="arc" />
    <link:label id="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2_terseLabel_en-US" xlink:label="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Records Management</link:label>
    <link:label id="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2_label_en-US" xlink:label="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Records Management [Member]</link:label>
    <link:label id="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2_documentation_en-US" xlink:label="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to records management, product or service that generates revenues for the entity.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_RecordsManagementMember" xlink:label="loc_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:to="lab_irm_RecordsManagementMember_ABFA11FD3087E77E72FDBA614D4BA8A2" xlink:type="arc" />
    <link:label id="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83_terseLabel_en-US" xlink:label="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Data Management</link:label>
    <link:label id="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83_label_en-US" xlink:label="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Data Management [Member]</link:label>
    <link:label id="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83_documentation_en-US" xlink:label="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to data management product or service that generates revenues for the entity.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_DataManagementMember" xlink:label="loc_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:to="lab_irm_DataManagementMember_892EAD91C0D378F195DFBA614D4C0B83" xlink:type="arc" />
    <link:label id="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70_terseLabel_en-US" xlink:label="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Information Destruction</link:label>
    <link:label id="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70_label_en-US" xlink:label="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Information Destruction [Member]</link:label>
    <link:label id="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70_documentation_en-US" xlink:label="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to information destruction product or service that generates revenues for the entity.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_InformationDestructionMember" xlink:label="loc_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:to="lab_irm_InformationDestructionMember_5557C8649C7E7C66F539BA614D4CAE70" xlink:type="arc" />
    <link:label id="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D_terseLabel_en-US" xlink:label="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Data Center</link:label>
    <link:label id="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D_label_en-US" xlink:label="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Data Center [Member]</link:label>
    <link:label id="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D_documentation_en-US" xlink:label="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to Data Center</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_DataCenterMember" xlink:label="loc_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:to="lab_irm_DataCenterMember_C253487FBB838CE2BE06BA614D4CE16D" xlink:type="arc" />
    <link:label id="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD_verboseLabel_en-US" xlink:label="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">North American Records and Information Management Business</link:label>
    <link:label id="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD_label_en-US" xlink:label="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">North American Records And Information Management Business [Member]</link:label>
    <link:label id="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD_documentation_en-US" xlink:label="lab_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to North American Records and Information Management Business, a reportable operating segment of the entity.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_NorthAmericanRecordsAndInformationManagementBusinessMember" xlink:label="loc_irm_NorthAmericanRecordsAndInformationManagementBusinessMember_CEA732D634D288EA90B0BA614D4C2BFD" xlink:type="locator" />
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    <link:label id="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB_terseLabel_en-US" xlink:label="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">North American Data Management Business</link:label>
    <link:label id="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB_label_en-US" xlink:label="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">North American Data Management Business [Member]</link:label>
    <link:label id="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB_documentation_en-US" xlink:label="lab_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to North American Data Management Business, a reportable operating segment of the entity.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_NorthAmericanDataManagementBusinessMember" xlink:label="loc_irm_NorthAmericanDataManagementBusinessMember_097D622E6BBAA2B640C2BA614D4D96DB" xlink:type="locator" />
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    <link:label id="lab_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9_verboseLabel_en-US" xlink:label="lab_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Western European Business</link:label>
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    <link:label id="lab_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9_documentation_en-US" xlink:label="lab_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to Western European Business, a reportable operating segment of the entity. [Member]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9" xlink:to="lab_irm_WesternEuropeanBusinessMember_FB8493A98FA8D6C6E8A2BA614D4D38D9" xlink:type="arc" />
    <link:label id="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313_verboseLabel_en-US" xlink:label="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other International Business</link:label>
    <link:label id="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313_label_en-US" xlink:label="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other International Business [Member]</link:label>
    <link:label id="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313_documentation_en-US" xlink:label="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to Other International Business, a reportable operating segment of the entity. [Member]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OtherInternationalBusinessMember" xlink:label="loc_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:to="lab_irm_OtherInternationalBusinessMember_C3FD35E9ACBBE302E841BA614D4D1313" xlink:type="arc" />
    <link:label id="lab_irm_GlobalDataCenterBusinessMember_68FED2F10432D002D9CEBA614D4D4969_verboseLabel_en-US" xlink:label="lab_irm_GlobalDataCenterBusinessMember_68FED2F10432D002D9CEBA614D4D4969" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Global Data Center Business</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_GlobalDataCenterBusinessMember" xlink:label="loc_irm_GlobalDataCenterBusinessMember_68FED2F10432D002D9CEBA614D4D4969" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_GlobalDataCenterBusinessMember_68FED2F10432D002D9CEBA614D4D4969" xlink:to="lab_irm_GlobalDataCenterBusinessMember_68FED2F10432D002D9CEBA614D4D4969" xlink:type="arc" />
    <link:label id="lab_us-gaap_CorporateAndOtherMember_4AF4584DA210C33D087ABA614D4D2FDF_verboseLabel_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_4AF4584DA210C33D087ABA614D4D2FDF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Corporate and Other Business</link:label>
    <link:label id="lab_us-gaap_CorporateAndOtherMember_4AF4584DA210C33D087ABA614D4D2FDF_label_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_4AF4584DA210C33D087ABA614D4D2FDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate and Other [Member]</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BF2E0C4B561969007E6F437A705A2A85_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_426E86A2BE8A5197AF8B3C309E021BE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion &amp; Analysis of Financial Condition and Results of Operations)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_426E86A2BE8A5197AF8B3C309E021BE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_426E86A2BE8A5197AF8B3C309E021BE1" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_426E86A2BE8A5197AF8B3C309E021BE1" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_9EF212A1986CC0AECC14437A705B0EEE_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_CE5091BED76253BC9B644CFB9343CB7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Paid for Acquisitions, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_CE5091BED76253BC9B644CFB9343CB7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_CE5091BED76253BC9B644CFB9343CB7E" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_CE5091BED76253BC9B644CFB9343CB7E" xlink:type="arc" />
    <link:label id="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_869D4F6DA3BDBB756606437A705B8D51_netLabel_en-US" xlink:label="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_39FB6FA82ABE5F9B8706EF43EB9311E8" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts" xlink:label="loc_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_39FB6FA82ABE5F9B8706EF43EB9311E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_39FB6FA82ABE5F9B8706EF43EB9311E8" xlink:to="lab_irm_PaymentstoAcquireCustomerRelationshipsCustomerInducementsandContractFulfillmentCosts_39FB6FA82ABE5F9B8706EF43EB9311E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_20EA8A6BEEB74183E211DD78331C37E7_netLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_58D9587235B653B58B4908F4733F92D0" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Operating lease right-of-use assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_58D9587235B653B58B4908F4733F92D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_58D9587235B653B58B4908F4733F92D0" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_58D9587235B653B58B4908F4733F92D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_10D4C2C23D3305447BACDD78331C18C1_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_9062EE8B757D503EAA8FA2B73AF717FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing lease right-of-use assets, net of accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_10D4C2C23D3305447BACDD78331C18C1_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_9062EE8B757D503EAA8FA2B73AF717FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Right-of-Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_9062EE8B757D503EAA8FA2B73AF717FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseRightOfUseAsset_9062EE8B757D503EAA8FA2B73AF717FA" xlink:to="lab_us-gaap_FinanceLeaseRightOfUseAsset_9062EE8B757D503EAA8FA2B73AF717FA" xlink:type="arc" />
    <link:label id="lab_irm_LeaseRightofUseAsset_77696359B33EC761A13BDD78331C0406_totalLabel_en-US" xlink:label="lab_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_irm_LeaseRightofUseAsset_77696359B33EC761A13BDD78331C0406_label_en-US" xlink:label="lab_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Right-of-Use Asset</link:label>
    <link:label id="lab_irm_LeaseRightofUseAsset_77696359B33EC761A13BDD78331C0406_documentation_en-US" xlink:label="lab_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Right-of-Use Asset</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LeaseRightofUseAsset" xlink:label="loc_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:to="lab_irm_LeaseRightofUseAsset_084C350F064B5AF09A53E1E8CBC54BFC" xlink:type="arc" />
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_AF2828014F36522CEF8CDDC35123DFDE_terseLabel_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current</link:label>
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_AF2828014F36522CEF8CDDC35123DFDE_label_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Current [Abstract]</link:label>
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_AF2828014F36522CEF8CDDC35123DFDE_documentation_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Current [Abstract]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LesseeOperatingAndFinanceLeaseCurrentAbstract" xlink:label="loc_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:to="lab_irm_LesseeOperatingAndFinanceLeaseCurrentAbstract_57F969E4403C5C10985A3E832DF0BB77" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_50E97FA5402DFC1AF30CDD78331D12F1_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_1423F55F14B353339CB84AF358FE3FE0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease liabilities</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_50E97FA5402DFC1AF30CDD78331D12F1_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_1423F55F14B353339CB84AF358FE3FE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_1423F55F14B353339CB84AF358FE3FE0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityCurrent_1423F55F14B353339CB84AF358FE3FE0" xlink:to="lab_us-gaap_OperatingLeaseLiabilityCurrent_1423F55F14B353339CB84AF358FE3FE0" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_AF17177EA980E7BF8BA3DD78331D9F77_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_F3D16A84590954D9B99BAA8C074DDB11" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing lease liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_AF17177EA980E7BF8BA3DD78331D9F77_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_F3D16A84590954D9B99BAA8C074DDB11" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_F3D16A84590954D9B99BAA8C074DDB11" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityCurrent_F3D16A84590954D9B99BAA8C074DDB11" xlink:to="lab_us-gaap_FinanceLeaseLiabilityCurrent_F3D16A84590954D9B99BAA8C074DDB11" xlink:type="arc" />
    <link:label id="lab_irm_LeaseLiabilityCurrent_77D7CB87E4BF0A2E72FADD78331DDBE4_totalLabel_en-US" xlink:label="lab_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current lease liabilities</link:label>
    <link:label id="lab_irm_LeaseLiabilityCurrent_77D7CB87E4BF0A2E72FADD78331DDBE4_label_en-US" xlink:label="lab_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Liability, Current</link:label>
    <link:label id="lab_irm_LeaseLiabilityCurrent_77D7CB87E4BF0A2E72FADD78331DDBE4_documentation_en-US" xlink:label="lab_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Liability, Current</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LeaseLiabilityCurrent" xlink:label="loc_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:to="lab_irm_LeaseLiabilityCurrent_861629F4FA2C54A7BF230D7354E9818A" xlink:type="arc" />
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_F87D46B8735A7FC0F70BDDC2B8BC0900_terseLabel_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term</link:label>
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_F87D46B8735A7FC0F70BDDC2B8BC0900_label_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Non-Current [Abstract]</link:label>
    <link:label id="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_F87D46B8735A7FC0F70BDDC2B8BC0900_documentation_en-US" xlink:label="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating And Finance Lease, Non-Current [Abstract]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract" xlink:label="loc_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:to="lab_irm_LesseeOperatingAndFinanceLeaseNonCurrentAbstract_AF6AF13EF2A8583AAEACBF4EFE0A940C" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_FF246E0BE2AE354BF6A8DD78331D6090_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_F5518BBAC589501E9A7F6E7FC39E26AC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating lease liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_F5518BBAC589501E9A7F6E7FC39E26AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_F5518BBAC589501E9A7F6E7FC39E26AC" xlink:to="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_F5518BBAC589501E9A7F6E7FC39E26AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_D333A0F0CF042685FAB7DD78331DAE9A_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_B9B44019A4A554A4BA2839DA4EEC2219" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing lease liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_D333A0F0CF042685FAB7DD78331DAE9A_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_B9B44019A4A554A4BA2839DA4EEC2219" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_B9B44019A4A554A4BA2839DA4EEC2219" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_B9B44019A4A554A4BA2839DA4EEC2219" xlink:to="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_B9B44019A4A554A4BA2839DA4EEC2219" xlink:type="arc" />
    <link:label id="lab_irm_LeaseLiabilityNoncurrent_5FFBB56E902FCCDAC72BDD78331D4066_totalLabel_en-US" xlink:label="lab_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total long-term lease liabilities</link:label>
    <link:label id="lab_irm_LeaseLiabilityNoncurrent_5FFBB56E902FCCDAC72BDD78331D4066_label_en-US" xlink:label="lab_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Liability, Noncurrent</link:label>
    <link:label id="lab_irm_LeaseLiabilityNoncurrent_5FFBB56E902FCCDAC72BDD78331D4066_documentation_en-US" xlink:label="lab_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Liability, Noncurrent</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LeaseLiabilityNoncurrent" xlink:label="loc_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:to="lab_irm_LeaseLiabilityNoncurrent_C20720E2F1AD54B69DC837A9E6CE16BF" xlink:type="arc" />
    <link:label id="lab_irm_LeaseLiability_15372A573F35B345F4F9DD78331DE453_totalLabel_en-US" xlink:label="lab_irm_LeaseLiability_9D915783694B5417B0A75C7412EC8A04" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_irm_LeaseLiability_15372A573F35B345F4F9DD78331DE453_label_en-US" xlink:label="lab_irm_LeaseLiability_9D915783694B5417B0A75C7412EC8A04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Liability</link:label>
    <link:label id="lab_irm_LeaseLiability_15372A573F35B345F4F9DD78331DE453_documentation_en-US" xlink:label="lab_irm_LeaseLiability_9D915783694B5417B0A75C7412EC8A04" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Liability</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_LeaseLiability" xlink:label="loc_irm_LeaseLiability_9D915783694B5417B0A75C7412EC8A04" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_5448C6D102D2C9BC8477AB3CDA6EDDD2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_5448C6D102D2C9BC8477AB3CDA6EDDD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of assets and liabilities carried at fair value measured on a recurring basis</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_F15A2E04168C5E048A95B607A44EA532" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BelowMarketLeaseNetAbstract" xlink:label="loc_us-gaap_BelowMarketLeaseNetAbstract_41D7453EF17658CD839C4E65EA770BA0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BelowMarketLeaseGross_3F0E4908C1C14D13B571DE1C69FF994F_label_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseGross_2C2C0C8082105600A42F9A446685F90B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Lease, Gross</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BelowMarketLeaseAccumulatedAmortization_2B42550DE67D5ECCA55A97DBBD336C9E" xlink:to="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_2B42550DE67D5ECCA55A97DBBD336C9E" xlink:type="arc" />
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    <link:label id="lab_us-gaap_BelowMarketLeaseNet_864A32EA7EC9B9C1EB31DE1C69FF229B_label_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseNet_0BB162E2F5595D9E8892B127C53ED6F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Lease, Net</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BelowMarketLeaseNet_0BB162E2F5595D9E8892B127C53ED6F0" xlink:to="lab_us-gaap_BelowMarketLeaseNet_0BB162E2F5595D9E8892B127C53ED6F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_9281A9124C9F5B12C6B3CB5BDC5DCCA6_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_9281A9124C9F5B12C6B3CB5BDC5DCCA6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income (Loss) Per Share-Basic and Diluted</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_DC09BEB13CA83650D392CB5BDC5EF39D" xlink:type="locator" />
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    <link:label id="lab_irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest_5EF09643AB83D876F13BCB5BDC5E72A0_totalLabel_en-US" xlink:label="lab_irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest_5EF09643AB83D876F13BCB5BDC5E72A0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)</link:label>
    <link:label id="lab_irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest_5EF09643AB83D876F13BCB5BDC5E72A0_label_en-US" xlink:label="lab_irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest_5EF09643AB83D876F13BCB5BDC5E72A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (loss) from Continuing Operations, Net of Tax, excluding Portion Attributable to Noncontrolling Interest</link:label>
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    <link:loc xlink:href="irm-20190930.xsd#irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest" xlink:label="loc_irm_IncomelossfromContinuingOperationsNetofTaxexcludingPortionAttributabletoNoncontrollingInterest_5EF09643AB83D876F13BCB5BDC5E72A0" xlink:type="locator" />
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    <link:label id="lab_irm_PerformanceUnitsAdjustmentsMember_FBF9DDBB6084E901A6D1CC1CB8F0AA74_documentation_en-US" xlink:label="lab_irm_PerformanceUnitsAdjustmentsMember_FBF9DDBB6084E901A6D1CC1CB8F0AA74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The adjustment performance shares issued under the entity's share-based compensation plans.</link:label>
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    <link:label id="lab_irm_TwoThousandNineteenMember_1BC6B2C85C4D91EA9938CC1CB8F16DA9_label_en-US" xlink:label="lab_irm_TwoThousandNineteenMember_1BC6B2C85C4D91EA9938CC1CB8F16DA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Nineteen [Member]</link:label>
    <link:label id="lab_irm_TwoThousandNineteenMember_1BC6B2C85C4D91EA9938CC1CB8F16DA9_documentation_en-US" xlink:label="lab_irm_TwoThousandNineteenMember_1BC6B2C85C4D91EA9938CC1CB8F16DA9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Nineteen [Member]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_TwoThousandNineteenMember" xlink:label="loc_irm_TwoThousandNineteenMember_1BC6B2C85C4D91EA9938CC1CB8F16DA9" xlink:type="locator" />
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    <link:label id="lab_irm_TwoThousandEighteenMember_1C140E90554AB32D57D8CC1CB8F1731A_label_en-US" xlink:label="lab_irm_TwoThousandEighteenMember_1C140E90554AB32D57D8CC1CB8F1731A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Eighteen [Member]</link:label>
    <link:label id="lab_irm_TwoThousandEighteenMember_1C140E90554AB32D57D8CC1CB8F1731A_documentation_en-US" xlink:label="lab_irm_TwoThousandEighteenMember_1C140E90554AB32D57D8CC1CB8F1731A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Eighteen [Member]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_TwoThousandEighteenMember" xlink:label="loc_irm_TwoThousandEighteenMember_1C140E90554AB32D57D8CC1CB8F1731A" xlink:type="locator" />
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    <link:label id="lab_irm_TwoThousandSeventeenMember_AA3E05DA1A0B51F481BECC1CB8F14BC7_label_en-US" xlink:label="lab_irm_TwoThousandSeventeenMember_AA3E05DA1A0B51F481BECC1CB8F14BC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Seventeen [Member]</link:label>
    <link:label id="lab_irm_TwoThousandSeventeenMember_AA3E05DA1A0B51F481BECC1CB8F14BC7_documentation_en-US" xlink:label="lab_irm_TwoThousandSeventeenMember_AA3E05DA1A0B51F481BECC1CB8F14BC7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Seventeen [Member]</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_TwoThousandSeventeenMember" xlink:label="loc_irm_TwoThousandSeventeenMember_AA3E05DA1A0B51F481BECC1CB8F14BC7" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0138FB7086D84F63A8F5CC1CB8F25908_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0138FB7086D84F63A8F5CC1CB8F25908" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock-Based Awards</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_DCB1749E6470F1BBC571CC1CB8F302E5_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_DCB1749E6470F1BBC571CC1CB8F302E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Option Activity</link:label>
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    <link:loc xlink:href="irm-20190930.xsd#irm_SeniorNotes4.375Percentdue2021Member" xlink:label="loc_irm_SeniorNotes4.375Percentdue2021Member_FFA58159D5D9044849CDCB5BDBCA5EBB" xlink:type="locator" />
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    <link:label id="lab_irm_SeniorNotes6Percentdue2023Member_1D66644E16814528E95BCB5BDBCB9A2A_documentation_en-US" xlink:label="lab_irm_SeniorNotes6Percentdue2023Member_1D66644E16814528E95BCB5BDBCB9A2A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to the senior notes having an interest rate of 6 percent, due in 2023.</link:label>
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    <link:label id="lab_irm_SeniorNotes5.25Percentdue2028Member_8CB9DAA4FFDB8DB48D5ECB5BDBCC49B7_documentation_en-US" xlink:label="lab_irm_SeniorNotes5.25Percentdue2028Member_8CB9DAA4FFDB8DB48D5ECB5BDBCC49B7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Information pertaining to the 5.25 Percent Senior Notes due 2028</link:label>
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    <link:loc xlink:href="irm-20190930.xsd#irm_LongTermDebtGrossNetofCurrentPortion" xlink:label="loc_irm_LongTermDebtGrossNetofCurrentPortion_B427FB64F66E8776D384CB5BDBCD0922" xlink:type="locator" />
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    <link:label id="lab_us-gaap_UnamortizedDebtIssuanceExpense_A448297153307D0C6825CB5BDBCEEE3E_label_en-US" xlink:label="lab_us-gaap_UnamortizedDebtIssuanceExpense_A448297153307D0C6825CB5BDBCEEE3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unamortized Debt Issuance Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnamortizedDebtIssuanceExpense" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_A448297153307D0C6825CB5BDBCEEE3E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensation_0A32A8D146F6DDAA04371822F4D2F1FE_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_0A32A8D146F6DDAA04371822F4D2F1FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
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    <link:label id="lab_irm_PaymentsforCustomerInducements_B62A75706B4E70AC4F8E1822F4D4CE9F_negatedTerseLabel_en-US" xlink:label="lab_irm_PaymentsforCustomerInducements_B62A75706B4E70AC4F8E1822F4D4CE9F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Customer inducements</link:label>
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    <link:label id="lab_irm_IncreaseDecreaseInContractWithCustomerLiabilitiesNet_92A388806153E3613F0B1822F4D4C4F8_terseLabel_en-US" xlink:label="lab_irm_IncreaseDecreaseInContractWithCustomerLiabilitiesNet_92A388806153E3613F0B1822F4D4C4F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract fulfillment costs and third-party commissions</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_B36F2772315BFE2FC18A1822F4D5EEE3_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_B36F2772315BFE2FC18A1822F4D5EEE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from divestments</link:label>
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    <link:label id="lab_srt_MinimumMember_1E6C923ED68CFB36DFE7CB5BDB715F5E_label_en-US" xlink:label="lab_srt_MinimumMember_1E6C923ED68CFB36DFE7CB5BDB715F5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
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    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLeverageRatioPeriodEnd_66B3D8C3AC974A42FD78CB5BDB72C5C0_documentation_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLeverageRatioPeriodEnd_66B3D8C3AC974A42FD78CB5BDB72C5C0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving credit and term leverage ratio at the end of the reporting period.</link:label>
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    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6_terseLabel_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net secured debt lease adjusted leverage ratio</link:label>
    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6_label_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Line of Credit and Term Loan Net Secured Debt Lease Adjusted Leverage Ratio</link:label>
    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6_documentation_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the entity's revolving credit and term loan, net secured debt lease adjusted leverage ratio at the end of the reporting period.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio" xlink:label="loc_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanNetSecuredDebtLeaseAdjustedLeverageRatio_10A6071E9DDD20007394CB5BDB726EE6" xlink:type="locator" />
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    <link:label id="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3_terseLabel_en-US" xlink:label="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bond leverage ratio (not lease adjusted)</link:label>
    <link:label id="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3_label_en-US" xlink:label="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Indentures Bond, Leverage Ratio</link:label>
    <link:label id="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3_documentation_en-US" xlink:label="lab_irm_DebtInstrumentCovenantIndenturesBondLeverageRatio_87E6F350110A2F042E53CB5BDB7263F3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The bond leverage ratio, per the indentures, at the end of the reporting period.</link:label>
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    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanFixedChargeCoverageRatio_A9787C44E99E6892B6ABCB5BDB7299D9_terseLabel_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanFixedChargeCoverageRatio_A9787C44E99E6892B6ABCB5BDB7299D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio</link:label>
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    <link:label id="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanFixedChargeCoverageRatio_A9787C44E99E6892B6ABCB5BDB7299D9_documentation_en-US" xlink:label="lab_irm_DebtInstrumentCovenantLineOfCreditAndTermLoanFixedChargeCoverageRatio_A9787C44E99E6892B6ABCB5BDB7299D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the entity's revolving credit and term loan fixed charge coverage ratio at the end of the reporting period.</link:label>
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    <link:label id="lab_us-gaap_LeasesOperatingAbstract_6267D98CCEB2228BA55CAFCE599EAF1D_label_en-US" xlink:label="lab_us-gaap_LeasesOperatingAbstract_6267D98CCEB2228BA55CAFCE599EAF1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases, Operating [Abstract]</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_D17E87779000556915FDAFCE59A05B0F_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_D17E87779000556915FDAFCE59A05B0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_D17E87779000556915FDAFCE59A05B0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_D17E87779000556915FDAFCE59A05B0F" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_D17E87779000556915FDAFCE59A05B0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeFinanceSubleaseDescriptionAbstract_BE3CF76EF653221CD036AFCE59A107A8_label_en-US" xlink:label="lab_us-gaap_LesseeFinanceSubleaseDescriptionAbstract_BE3CF76EF653221CD036AFCE59A107A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Finance Sublease, Description [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeFinanceSubleaseDescriptionAbstract" xlink:label="loc_us-gaap_LesseeFinanceSubleaseDescriptionAbstract_BE3CF76EF653221CD036AFCE59A107A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeFinanceSubleaseDescriptionAbstract_BE3CF76EF653221CD036AFCE59A107A8" xlink:to="lab_us-gaap_LesseeFinanceSubleaseDescriptionAbstract_BE3CF76EF653221CD036AFCE59A107A8" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals within One Year</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee in the next fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinOneYear_476851F0CDB94FCF31A1AFCE59A1ABD9" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals within Two Years</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee in the second fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinTwoYears_92D24F2AE91F13A85300AFCE59A1E106" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals within Three Years</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee in the third fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinThreeYears_40A0DFB2E257F6B6045BAFCE59A136EE" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals within Four Years</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee in the fourth fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFourYears_2F544F0DD7ADB9296E0DAFCE59A1FC5E" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals within Five Years</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee in the fifth fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsWithinFiveYears_88B8D94BF33CE41379C8AFCE59A126AB" xlink:type="arc" />
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08_negatedTerseLabel_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08_label_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Thereafter</link:label>
    <link:label id="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08_documentation_en-US" xlink:label="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of minimum sublease rentals to be received by the lessee after the fifth fiscal year following the latest fiscal year for operating leases.</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter" xlink:label="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:to="lab_irm_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsThereafter_2172F92FD5A6427653B2AFCE59A27F08" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total minimum lease payments</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_DE8147B76067AD8C51C1AFCE59A2FF1E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeaseObligationsAbstract_15A2304E238315904BA5AFCE59A256D0_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsAbstract_15A2304E238315904BA5AFCE59A256D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalLeaseObligationsAbstract" xlink:label="loc_us-gaap_CapitalLeaseObligationsAbstract_15A2304E238315904BA5AFCE59A256D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsAbstract_15A2304E238315904BA5AFCE59A256D0" xlink:to="lab_us-gaap_CapitalLeaseObligationsAbstract_15A2304E238315904BA5AFCE59A256D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019 (excluding the nine months ended September 30, 2019)</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_28BE539188DC5D7D66A1AFCE59A26488" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_850559C9D9E34602148DAFCE59A209C1" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_523ED260E79C2ED95125AFCE59A299DB_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_523ED260E79C2ED95125AFCE59A299DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
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    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_EF44B7457B8A4AC5F5D5AFCE59A3C0B6_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_EF44B7457B8A4AC5F5D5AFCE59A3C0B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due, Next Twelve Months</link:label>
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    <link:label id="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84_terseLabel_en-US" xlink:label="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Euro Notes</link:label>
    <link:label id="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84_label_en-US" xlink:label="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Euro Notes [Member]</link:label>
    <link:label id="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84_documentation_en-US" xlink:label="lab_irm_EuroNotesMember_0938E93F3CDD0C7BC9661850CF2BFF84" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Euro Notes [Member]</link:label>
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    <link:label id="lab_us-gaap_DesignatedAsHedgingInstrumentMember_A4181F340AC7A6A653271850CF2ED68A_terseLabel_en-US" xlink:label="lab_us-gaap_DesignatedAsHedgingInstrumentMember_A4181F340AC7A6A653271850CF2ED68A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Designated as Hedging Instrument</link:label>
    <link:label id="lab_us-gaap_DesignatedAsHedgingInstrumentMember_A4181F340AC7A6A653271850CF2ED68A_label_en-US" xlink:label="lab_us-gaap_DesignatedAsHedgingInstrumentMember_A4181F340AC7A6A653271850CF2ED68A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Designated as Hedging Instrument [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_A4181F340AC7A6A653271850CF2ED68A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DerivativeAmountOfHedgedItem_73318B4A0598BC3335BD1850CF2F879A_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAmountOfHedgedItem_73318B4A0598BC3335BD1850CF2F879A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedged notes</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAmountOfHedgedItem" xlink:label="loc_us-gaap_DerivativeAmountOfHedgedItem_73318B4A0598BC3335BD1850CF2F879A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax_20C0D41B265EACC151C71850CF2F829A_verboseLabel_en-US" xlink:label="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax_20C0D41B265EACC151C71850CF2F829A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange gains (losses)</link:label>
    <link:label id="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax_20C0D41B265EACC151C71850CF2F829A_label_en-US" xlink:label="lab_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax_20C0D41B265EACC151C71850CF2F829A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives used in Net Investment Hedge, Increase (Decrease), Gross of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax" xlink:label="loc_us-gaap_TranslationAdjustmentForNetInvestmentHedgeIncreaseDecreaseGrossOfTax_20C0D41B265EACC151C71850CF2F829A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_B705E44D9F9E5F2F09521850CF2F8777_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_B705E44D9F9E5F2F09521850CF2F8777" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cumulative net gains</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_B705E44D9F9E5F2F09521850CF2F8777" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_B705E44D9F9E5F2F09521850CF2F8777" xlink:to="lab_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_B705E44D9F9E5F2F09521850CF2F8777" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688_verboseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">2019 (excluding the nine months ended September 30, 2019)</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688" xlink:to="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_4A14833B5969EC221B65AFCE5C75A688" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F_terseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F" xlink:to="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_045A56B0BCDF20A92B73AFCE5C75D81F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB_terseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB" xlink:to="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_D988B2B149B6ABCEFF10AFCE5C76C8EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D_terseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D" xlink:to="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_8EDD8DB10390064E62C7AFCE5C762A0D" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9_terseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9" xlink:to="lab_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_D231C4B7BEB727993038AFCE5C76B4D9" xlink:type="arc" />
    <link:label id="lab_irm_A5.375SeniorNotesMember_446C20E306309FBC4BA54E6BF8387251_terseLabel_en-US" xlink:label="lab_irm_A5.375SeniorNotesMember_B69CE44C50875C189ECF71EF49391A9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.375% Senior Notes</link:label>
    <link:label id="lab_irm_A5.375SeniorNotesMember_446C20E306309FBC4BA54E6BF8387251_label_en-US" xlink:label="lab_irm_A5.375SeniorNotesMember_B69CE44C50875C189ECF71EF49391A9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">5.375% Senior Notes [Member]</link:label>
    <link:label id="lab_irm_A5.375SeniorNotesMember_446C20E306309FBC4BA54E6BF8387251_documentation_en-US" xlink:label="lab_irm_A5.375SeniorNotesMember_B69CE44C50875C189ECF71EF49391A9A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">5.375% Senior Notes [Member]</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_F837CE1E68908C28A712DD78336710BB_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_48E5230FA86F51FEA0C97C78A7DF06A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_F837CE1E68908C28A712DD78336710BB_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_48E5230FA86F51FEA0C97C78A7DF06A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_48E5230FA86F51FEA0C97C78A7DF06A4" xlink:type="locator" />
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    <link:label id="lab_irm_NorthAmericanDataManagementBusinessMember_947B019FAF37134F10B4DD78336847ED_verboseLabel_en-US" xlink:label="lab_irm_NorthAmericanDataManagementBusinessMember_7C99E5D94DED5B7BB10D740C80AEF06A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">North American Data Management Business</link:label>
    <link:loc xlink:href="irm-20190930.xsd#irm_NorthAmericanDataManagementBusinessMember" xlink:label="loc_irm_NorthAmericanDataManagementBusinessMember_7C99E5D94DED5B7BB10D740C80AEF06A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillLineItems_3BB602C1B39FCC52E2C5DD783369E7FD_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_B65C84937C625E5BBE4E40D2B1924A5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_3BB602C1B39FCC52E2C5DD783369E7FD_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_B65C84937C625E5BBE4E40D2B1924A5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_B65C84937C625E5BBE4E40D2B1924A5B" xlink:type="locator" />
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