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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fd7d0-27bf-7402-9c1e-37c7fd280b5a,g:c5886dfc-4e3a-4b18-955d-2d80210fcb24-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.whitemountains.com/role/DocumentandEntityInformation" xlink:type="simple" xlink:href="wtm-20261105.xsd#DocumentandEntityInformation"/>
  <link:presentationLink xlink:role="http://www.whitemountains.com/role/DocumentandEntityInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019fd7d0-27bf-7acd-9810-a8c11e58f4ce" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_DocumentType_019fd7d0-27bf-7acd-9810-a8c11e58f4ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019fd7d0-27bf-7448-8744-f26f6c02e32e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_DocumentPeriodEndDate_019fd7d0-27bf-7448-8744-f26f6c02e32e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019fd7d0-27bf-7a7a-9a38-ce19aa357149" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityRegistrantName_019fd7d0-27bf-7a7a-9a38-ce19aa357149" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019fd7d0-27bf-74d8-8703-1b6026fc5b30" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019fd7d0-27bf-74d8-8703-1b6026fc5b30" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019fd7d0-27bf-704f-984f-de6109b0f7c2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityFileNumber_019fd7d0-27bf-704f-984f-de6109b0f7c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019fd7d0-27bf-75e2-916c-7d34257af962" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityTaxIdentificationNumber_019fd7d0-27bf-75e2-916c-7d34257af962" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019fd7d0-27bf-7919-8d0c-17118641e8e1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityAddressAddressLine1_019fd7d0-27bf-7919-8d0c-17118641e8e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019fd7d0-27bf-7607-beb2-af7b10ade442" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityAddressCityOrTown_019fd7d0-27bf-7607-beb2-af7b10ade442" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019fd7d0-27bf-75d8-8e34-9f4461158d8c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityAddressStateOrProvince_019fd7d0-27bf-75d8-8e34-9f4461158d8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019fd7d0-27bf-71be-84d3-b5cc5f2263d7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityAddressPostalZipCode_019fd7d0-27bf-71be-84d3-b5cc5f2263d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019fd7d0-27bf-737a-8fb3-62639ff478dd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_CityAreaCode_019fd7d0-27bf-737a-8fb3-62639ff478dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019fd7d0-27bf-7422-a052-6bf88cba66de" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_LocalPhoneNumber_019fd7d0-27bf-7422-a052-6bf88cba66de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019fd7d0-27bf-762b-b808-04804797aabd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_WrittenCommunications_019fd7d0-27bf-762b-b808-04804797aabd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019fd7d0-27bf-7e74-ab72-2b7d7fc79b35" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_SolicitingMaterial_019fd7d0-27bf-7e74-ab72-2b7d7fc79b35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019fd7d0-27bf-7006-b30f-ad2864f8ceb8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_PreCommencementTenderOffer_019fd7d0-27bf-7006-b30f-ad2864f8ceb8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019fd7d0-27bf-72dc-916a-41372e923928" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019fd7d0-27bf-72dc-916a-41372e923928" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019fd7d0-27bf-7244-98c9-6306bd898ef9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_Security12bTitle_019fd7d0-27bf-7244-98c9-6306bd898ef9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019fd7d0-27bf-79a8-bee0-95508e55f942" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_TradingSymbol_019fd7d0-27bf-79a8-bee0-95508e55f942" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019fd7d0-27bf-7e4a-baef-2e2536379275" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_SecurityExchangeName_019fd7d0-27bf-7e4a-baef-2e2536379275" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019fd7d0-27bf-7ea4-8c44-0c758f00523f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityEmergingGrowthCompany_019fd7d0-27bf-7ea4-8c44-0c758f00523f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019fd7d0-27bf-7ea3-8e17-550da5fb313c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_EntityCentralIndexKey_019fd7d0-27bf-7ea3-8e17-550da5fb313c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019fd7d0-27bf-79f6-947c-6eb7acae73ab" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_AmendmentFlag_019fd7d0-27bf-79f6-947c-6eb7acae73ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019fd7d0-27bf-7681-816d-14d5c9e95406" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd7d0-27bf-72bf-9d97-c50ed6411f50" xlink:to="loc_dei_DocumentInformationTable_019fd7d0-27bf-7681-816d-14d5c9e95406" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityListingsExchangeAxis_019fd7d0-27bf-7aeb-b9c0-99ddf3c4f34f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityListingsExchangeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019fd7d0-27bf-7681-816d-14d5c9e95406" xlink:to="loc_dei_EntityListingsExchangeAxis_019fd7d0-27bf-7aeb-b9c0-99ddf3c4f34f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExchangeDomain_019fd7d0-27bf-7e99-bfa6-de42b7e21105" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ExchangeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityListingsExchangeAxis_019fd7d0-27bf-7aeb-b9c0-99ddf3c4f34f" xlink:to="loc_dei_ExchangeDomain_019fd7d0-27bf-7e99-bfa6-de42b7e21105" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_wtm_BermudaStockExchangeMember_019fd7d0-27bf-76a1-93f7-346c67f5af39" xlink:href="wtm-20261105.xsd#wtm_BermudaStockExchangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_ExchangeDomain_019fd7d0-27bf-7e99-bfa6-de42b7e21105" xlink:to="loc_wtm_BermudaStockExchangeMember_019fd7d0-27bf-76a1-93f7-346c67f5af39" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019fd7d0-27bf-7c19-9f33-f491fdc7987a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019fd7d0-27bf-7681-816d-14d5c9e95406" xlink:to="loc_dei_DocumentInformationLineItems_019fd7d0-27bf-7c19-9f33-f491fdc7987a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019fd7d0-27bf-7783-8aa0-a2b3f943eb97" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019fd7d0-27bf-7c19-9f33-f491fdc7987a" xlink:to="loc_dei_TradingSymbol_019fd7d0-27bf-7783-8aa0-a2b3f943eb97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
