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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:88b65da3-7a16-41a8-a5a6-164784ae17b6,g:2e28b38c-e368-474d-b7fd-0c2c72c7e8e4-->
<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.dropbox.com/role/DocumentandEntityInformationDocument" xlink:type="simple" xlink:href="dbx-20210520.xsd#DocumentandEntityInformationDocument"/>
  <link:presentationLink xlink:role="http://www.dropbox.com/role/DocumentandEntityInformationDocument" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_8b798f9c-0174-4b86-b689-98c0481194a2" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_DocumentType_8b798f9c-0174-4b86-b689-98c0481194a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_c83bcd14-6932-4f6c-892f-bafa1bdbf147" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_DocumentPeriodEndDate_c83bcd14-6932-4f6c-892f-bafa1bdbf147" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_42afacb4-5c48-48d4-897d-097cf47a9b3a" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityRegistrantName_42afacb4-5c48-48d4-897d-097cf47a9b3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_e7b0babf-5f3e-4087-a386-ec8bd0baa449" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityCentralIndexKey_e7b0babf-5f3e-4087-a386-ec8bd0baa449" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_2b5537d1-44f7-4a41-834f-719a898048a9" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_AmendmentFlag_2b5537d1-44f7-4a41-834f-719a898048a9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_aa794b65-5363-42ee-8415-c79e63cdcc60" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityIncorporationStateCountryCode_aa794b65-5363-42ee-8415-c79e63cdcc60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_e4d283f4-5823-40fa-bdce-ba62b76737ca" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityFileNumber_e4d283f4-5823-40fa-bdce-ba62b76737ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_9d42c33b-0b61-4e6c-8cd2-741242704fd2" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityTaxIdentificationNumber_9d42c33b-0b61-4e6c-8cd2-741242704fd2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_87b76f62-2abd-4a38-9d93-2a8b1e3d0575" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityAddressAddressLine1_87b76f62-2abd-4a38-9d93-2a8b1e3d0575" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_5393acd5-299a-4b73-b795-04ceb2783a58" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityAddressCityOrTown_5393acd5-299a-4b73-b795-04ceb2783a58" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_9f57860c-77f5-4791-bfd5-b76ede45c009" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityAddressStateOrProvince_9f57860c-77f5-4791-bfd5-b76ede45c009" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_2e1bb4ed-8b61-4b1e-ac81-e00097c520db" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityAddressPostalZipCode_2e1bb4ed-8b61-4b1e-ac81-e00097c520db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_b5608153-1f9a-429c-87a4-afb6b787504a" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_CityAreaCode_b5608153-1f9a-429c-87a4-afb6b787504a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_b63f2b3a-f6bb-4039-9706-a3fedee5614b" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_LocalPhoneNumber_b63f2b3a-f6bb-4039-9706-a3fedee5614b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_7fb609f5-63a4-4f16-b56b-c2c2fbf258b2" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_WrittenCommunications_7fb609f5-63a4-4f16-b56b-c2c2fbf258b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_41eea3eb-c634-435b-9e76-555b5f9e6b82" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_SolicitingMaterial_41eea3eb-c634-435b-9e76-555b5f9e6b82" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_08e07247-8e70-4094-a04f-7c41006711c3" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_PreCommencementTenderOffer_08e07247-8e70-4094-a04f-7c41006711c3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_9f9953ae-b053-46a2-8277-f0dc74e12c1e" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_9f9953ae-b053-46a2-8277-f0dc74e12c1e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_31d03e89-1bb5-43fb-8c99-fded928b4290" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_Security12bTitle_31d03e89-1bb5-43fb-8c99-fded928b4290" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_ba47cdf7-e0b1-4e7f-adc6-6ce287f2ef72" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_TradingSymbol_ba47cdf7-e0b1-4e7f-adc6-6ce287f2ef72" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_2d7764c6-cbe8-4f7d-b1de-f9b3f5a48397" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_SecurityExchangeName_2d7764c6-cbe8-4f7d-b1de-f9b3f5a48397" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_8b6cb6bf-59bf-49a8-b2e1-3b985087585c" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_bab72de1-63b8-47ea-b310-184e7a3160dc" xlink:to="loc_dei_EntityEmergingGrowthCompany_8b6cb6bf-59bf-49a8-b2e1-3b985087585c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
