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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e8d99-9de2-7b7d-9b47-8c229f8015fa,g:0bc20637-ea18-411e-9b3a-baaa5e9c151f-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.tranetechnologies.com/role/Cover" xlink:type="simple" xlink:href="tt-20260604.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.tranetechnologies.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019e8d99-9de2-793d-a931-f9e8744f28c0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_DocumentInformationTable_019e8d99-9de2-793d-a931-f9e8744f28c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019e8d99-9de2-793d-a931-f9e8744f28c0" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3" xlink:to="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7da5-a739-2039542ec2b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019e8d99-9de2-7bdd-bb29-0f85c3fba8d3" xlink:to="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7da5-a739-2039542ec2b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e8d99-9de2-7c9f-8579-5b1b563201b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7da5-a739-2039542ec2b3" xlink:to="loc_us-gaap_CommonStockMember_019e8d99-9de2-7c9f-8579-5b1b563201b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e8d99-9de2-7439-a912-48d8d55c6ef7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019e8d99-9de2-7da5-a739-2039542ec2b3" xlink:to="loc_us-gaap_SeniorNotesMember_019e8d99-9de2-7439-a912-48d8d55c6ef7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e8d99-9de2-755c-8b1b-26812a039e23" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_Security12bTitle_019e8d99-9de2-755c-8b1b-26812a039e23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e8d99-9de2-7979-911b-6b1f1e94fbcd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_SecurityExchangeName_019e8d99-9de2-7979-911b-6b1f1e94fbcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e8d99-9de2-7b3b-9c7d-45fd336a922f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_TradingSymbol_019e8d99-9de2-7b3b-9c7d-45fd336a922f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e8d99-9de2-7f13-a4a1-75844e5e9df0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_DocumentPeriodEndDate_019e8d99-9de2-7f13-a4a1-75844e5e9df0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e8d99-9de2-725c-91ca-626623946a41" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_DocumentType_019e8d99-9de2-725c-91ca-626623946a41" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e8d99-9de2-74f5-80c2-f9aa5ae23214" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityRegistrantName_019e8d99-9de2-74f5-80c2-f9aa5ae23214" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e8d99-9de2-71ec-89cb-f1ba817a0cab" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e8d99-9de2-71ec-89cb-f1ba817a0cab" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e8d99-9de2-7953-8639-1db258b5819e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityFileNumber_019e8d99-9de2-7953-8639-1db258b5819e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e8d99-9de2-76e0-80ef-081a91eacf04" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e8d99-9de2-76e0-80ef-081a91eacf04" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e8d99-9de2-7f27-a65c-ad128824e7e8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityAddressAddressLine1_019e8d99-9de2-7f27-a65c-ad128824e7e8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019e8d99-9de2-7e67-b943-19f354d2e83d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityAddressAddressLine2_019e8d99-9de2-7e67-b943-19f354d2e83d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e8d99-9de2-7324-a3ab-a3999c3a8b2c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityAddressCityOrTown_019e8d99-9de2-7324-a3ab-a3999c3a8b2c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCountry_019e8d99-9de2-70ca-92ee-8b96c9d81744" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCountry"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityAddressCountry_019e8d99-9de2-70ca-92ee-8b96c9d81744" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e8d99-9de2-7162-9952-be676e8ca0f3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_CityAreaCode_019e8d99-9de2-7162-9952-be676e8ca0f3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e8d99-9de2-7b8d-a668-4243e553757e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_LocalPhoneNumber_019e8d99-9de2-7b8d-a668-4243e553757e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e8d99-9de2-7022-8b31-59f6ce0867f6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_WrittenCommunications_019e8d99-9de2-7022-8b31-59f6ce0867f6" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e8d99-9de2-70ac-addb-2f147d4bce2d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_SolicitingMaterial_019e8d99-9de2-70ac-addb-2f147d4bce2d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e8d99-9de2-7fc0-8a22-42ccd42170c1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_PreCommencementTenderOffer_019e8d99-9de2-7fc0-8a22-42ccd42170c1" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e8d99-9de2-7d00-b657-25ae22f7d8e8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e8d99-9de2-7d00-b657-25ae22f7d8e8" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e8d99-9de2-77a0-afd5-9f0bdfeb7afe" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e8d99-9de2-77a0-afd5-9f0bdfeb7afe" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e8d99-9de2-7565-b280-ee2031cd6b0e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityCentralIndexKey_019e8d99-9de2-7565-b280-ee2031cd6b0e" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e8d99-9de2-791a-bde3-510849bdb332" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_AmendmentFlag_019e8d99-9de2-791a-bde3-510849bdb332" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_NoTradingSymbolFlag_019e8d99-9de2-7d17-b355-ed22042a2489" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_NoTradingSymbolFlag_019e8d99-9de2-7d17-b355-ed22042a2489" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e8d99-9de2-79bb-8485-0a7e781896d6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e8d99-9de2-745f-80e0-82520a44e7f0" xlink:to="loc_dei_EntityAddressPostalZipCode_019e8d99-9de2-79bb-8485-0a7e781896d6" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_019e8d99-9de2-74b8-9cfa-2b0f2d9a09a3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_019e8d99-9de2-7189-a644-252ba14f3776" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_019e8d99-9de2-74b8-9cfa-2b0f2d9a09a3" xlink:to="loc_dei_EntitiesTable_019e8d99-9de2-7189-a644-252ba14f3776" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e8d99-9de2-7b95-bdb7-e673735ed600" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019e8d99-9de2-74b8-9cfa-2b0f2d9a09a3" xlink:to="loc_dei_EntityRegistrantName_019e8d99-9de2-7b95-bdb7-e673735ed600" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
