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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fd2bc-8b20-7b06-96ad-c4221e393e1c,g:7fe05044-9926-478e-8d76-f18ddcb0c68a-->
<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.galaxy.com/role/Cover" xlink:type="simple" xlink:href="glxy-20260805.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.galaxy.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019fd2bc-8b20-75e0-b317-eb86c4ba8cf3" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_DocumentType_019fd2bc-8b20-75e0-b317-eb86c4ba8cf3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019fd2bc-8b20-7c33-a687-d0b5cb68aa2d" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_DocumentPeriodEndDate_019fd2bc-8b20-7c33-a687-d0b5cb68aa2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019fd2bc-8b20-7f2e-8625-03ad1eedc345" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityRegistrantName_019fd2bc-8b20-7f2e-8625-03ad1eedc345" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019fd2bc-8b20-77ed-998f-ac8b38724d81" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019fd2bc-8b20-77ed-998f-ac8b38724d81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019fd2bc-8b20-733a-8fa9-ea6b6797156c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityFileNumber_019fd2bc-8b20-733a-8fa9-ea6b6797156c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019fd2bc-8b20-7bc7-a623-8fc0b0512305" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityTaxIdentificationNumber_019fd2bc-8b20-7bc7-a623-8fc0b0512305" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019fd2bc-8b20-7afb-98e6-9b7d66d42737" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityAddressAddressLine1_019fd2bc-8b20-7afb-98e6-9b7d66d42737" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019fd2bc-8b20-7ff1-a055-8c49d8c7c0c5" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityAddressCityOrTown_019fd2bc-8b20-7ff1-a055-8c49d8c7c0c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019fd2bc-8b20-76f2-9544-adabc786a30e" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityAddressStateOrProvince_019fd2bc-8b20-76f2-9544-adabc786a30e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019fd2bc-8b20-7533-af39-9a1e3eb51b09" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityAddressPostalZipCode_019fd2bc-8b20-7533-af39-9a1e3eb51b09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019fd2bc-8b20-78c1-95a8-57df273edad0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_CityAreaCode_019fd2bc-8b20-78c1-95a8-57df273edad0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019fd2bc-8b20-72f6-b2c4-52c6591365ee" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_LocalPhoneNumber_019fd2bc-8b20-72f6-b2c4-52c6591365ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019fd2bc-8b20-74ed-aee6-1783bab369ca" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_WrittenCommunications_019fd2bc-8b20-74ed-aee6-1783bab369ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019fd2bc-8b20-755b-99d9-4c5d0e7f9c56" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_SolicitingMaterial_019fd2bc-8b20-755b-99d9-4c5d0e7f9c56" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019fd2bc-8b20-7d84-843a-62d5a09123fb" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_PreCommencementTenderOffer_019fd2bc-8b20-7d84-843a-62d5a09123fb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019fd2bc-8b20-787b-868e-4068ebc21630" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019fd2bc-8b20-787b-868e-4068ebc21630" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019fd2bc-8b20-72e1-b4a6-30347ca6bf73" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_Security12bTitle_019fd2bc-8b20-72e1-b4a6-30347ca6bf73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019fd2bc-8b20-7b8a-8f3e-ebfc704717a0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_TradingSymbol_019fd2bc-8b20-7b8a-8f3e-ebfc704717a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019fd2bc-8b20-7a69-8dc6-b8098916ddc5" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_SecurityExchangeName_019fd2bc-8b20-7a69-8dc6-b8098916ddc5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019fd2bc-8b20-7c30-8113-88e2f0f02660" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityEmergingGrowthCompany_019fd2bc-8b20-7c30-8113-88e2f0f02660" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019fd2bc-8b20-749f-9a17-c50c86a13c4c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_EntityCentralIndexKey_019fd2bc-8b20-749f-9a17-c50c86a13c4c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019fd2bc-8b20-7fd7-a1cf-6ac5469af80f" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019fd2bc-8b20-7ab6-af82-4668507036fb" xlink:to="loc_dei_AmendmentFlag_019fd2bc-8b20-7fd7-a1cf-6ac5469af80f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
