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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a01126-447f-7827-ae5d-323081117909,g:4932df3a-f41e-4f07-b737-db3eeb48ab18-->
<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.sempra.com/role/Cover" xlink:type="simple" xlink:href="sempra-20261112.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.sempra.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_01a01126-447f-77df-9b1e-f2422bcf4ee8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_DocumentInformationTable_01a01126-447f-77df-9b1e-f2422bcf4ee8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a01126-447f-71e5-a9e3-065d54d7ae60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_01a01126-447f-77df-9b1e-f2422bcf4ee8" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a01126-447f-71e5-a9e3-065d54d7ae60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a01126-447f-71e5-a9e3-065d54d7ae60_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a01126-447f-71e5-a9e3-065d54d7ae60" xlink:to="loc_us-gaap_ClassOfStockDomain_01a01126-447f-71e5-a9e3-065d54d7ae60_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a01126-447f-7eb7-ba42-7544ec740e63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a01126-447f-71e5-a9e3-065d54d7ae60" xlink:to="loc_us-gaap_ClassOfStockDomain_01a01126-447f-7eb7-ba42-7544ec740e63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a01126-447f-7a24-8584-434f83fd127d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a01126-447f-7eb7-ba42-7544ec740e63" xlink:to="loc_us-gaap_CommonStockMember_01a01126-447f-7a24-8584-434f83fd127d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sempra_Sempra5.75JuniorSubordinatedNotesDue2079Member_01a01126-447f-7282-a282-5a98b6d84f15" xlink:href="sempra-20261112.xsd#sempra_Sempra5.75JuniorSubordinatedNotesDue2079Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a01126-447f-7eb7-ba42-7544ec740e63" xlink:to="loc_sempra_Sempra5.75JuniorSubordinatedNotesDue2079Member_01a01126-447f-7282-a282-5a98b6d84f15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a01126-447f-7e2c-a06e-069f7c89cf1c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_DocumentType_01a01126-447f-7e2c-a06e-069f7c89cf1c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a01126-447f-7e2c-8933-c39a60ce0a1f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_DocumentPeriodEndDate_01a01126-447f-7e2c-8933-c39a60ce0a1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a01126-447f-7d4b-8f25-3bf68e413130" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityRegistrantName_01a01126-447f-7d4b-8f25-3bf68e413130" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a01126-447f-7053-8bdc-3d46519989c5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a01126-447f-7053-8bdc-3d46519989c5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a01126-447f-744e-ba7f-1f001d179597" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityFileNumber_01a01126-447f-744e-ba7f-1f001d179597" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a01126-447f-712e-990c-9a72b861bb4c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a01126-447f-712e-990c-9a72b861bb4c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a01126-447f-7186-98a2-6dc7f57ab232" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityAddressAddressLine1_01a01126-447f-7186-98a2-6dc7f57ab232" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a01126-447f-737d-bc3c-d683e3e6ae99" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityAddressCityOrTown_01a01126-447f-737d-bc3c-d683e3e6ae99" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a01126-447f-7906-9810-fe0518056cfe" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityAddressStateOrProvince_01a01126-447f-7906-9810-fe0518056cfe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a01126-447f-79ba-a47a-3545e64744a8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityAddressPostalZipCode_01a01126-447f-79ba-a47a-3545e64744a8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a01126-447f-7cf1-8c40-e82b763c3d1e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_CityAreaCode_01a01126-447f-7cf1-8c40-e82b763c3d1e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a01126-447f-70b1-a8da-e7cc336128a8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_LocalPhoneNumber_01a01126-447f-70b1-a8da-e7cc336128a8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a01126-447f-7c89-a342-1b581928181e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_WrittenCommunications_01a01126-447f-7c89-a342-1b581928181e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a01126-447f-75cf-91af-917b975eb3fe" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_SolicitingMaterial_01a01126-447f-75cf-91af-917b975eb3fe" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a01126-447f-7d3f-a8d0-9f58eba0c2c4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_PreCommencementTenderOffer_01a01126-447f-7d3f-a8d0-9f58eba0c2c4" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a01126-447f-748d-b111-46ab30868054" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a01126-447f-748d-b111-46ab30868054" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a01126-447f-7996-b574-e082fe545c35" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a01126-447f-7996-b574-e082fe545c35" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a01126-447f-7b33-9e29-ea602b9a6408" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_EntityCentralIndexKey_01a01126-447f-7b33-9e29-ea602b9a6408" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a01126-447f-7d5d-97bb-0410235bf95c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_AmendmentFlag_01a01126-447f-7d5d-97bb-0410235bf95c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a01126-447f-7cb3-a69e-fd35eea900ee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_Security12bTitle_01a01126-447f-7cb3-a69e-fd35eea900ee" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a01126-447f-7430-b72d-e4fcd0aaa192" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_TradingSymbol_01a01126-447f-7430-b72d-e4fcd0aaa192" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a01126-447f-745a-b2ce-7ef2215b5fb9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a01126-447f-7112-be1c-353573f44744" xlink:to="loc_dei_SecurityExchangeName_01a01126-447f-745a-b2ce-7ef2215b5fb9" xlink:type="arc" order="21"/>
  </link:definitionLink>
</link:linkbase>
