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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:0030fb78-3229-481c-9153-d3aa505ab1a3,g:4287bd28-0620-4c6c-9932-fa055f8fdcad-->
<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-20210323.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_073a97f0-8351-43e1-8692-a407799d46ef" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_57ac872d-8453-4a96-a3c8-441aeca34cbb" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_DocumentType_57ac872d-8453-4a96-a3c8-441aeca34cbb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_818eecd3-f99f-4637-8f1a-affa67a405ee" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_DocumentPeriodEndDate_818eecd3-f99f-4637-8f1a-affa67a405ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_b85c6685-68fc-423a-a6a5-8d990cdf938e" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityRegistrantName_b85c6685-68fc-423a-a6a5-8d990cdf938e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_6813f583-4faf-4b25-b110-c5df4efcc91b" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityCentralIndexKey_6813f583-4faf-4b25-b110-c5df4efcc91b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_a5d41f91-7991-4713-8053-f5a85c7a6c2c" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_AmendmentFlag_a5d41f91-7991-4713-8053-f5a85c7a6c2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_30adb1f0-7808-4bdb-92f7-64f025445827" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityIncorporationStateCountryCode_30adb1f0-7808-4bdb-92f7-64f025445827" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_9b996647-2f45-4acb-b561-1df0589a51e4" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityFileNumber_9b996647-2f45-4acb-b561-1df0589a51e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_ad1751a2-4e8e-476d-812c-5ccfe878276f" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityTaxIdentificationNumber_ad1751a2-4e8e-476d-812c-5ccfe878276f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_c5dd4597-9cd3-49c2-a308-e9378bd01220" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityAddressAddressLine1_c5dd4597-9cd3-49c2-a308-e9378bd01220" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_667969c8-b8e3-4cc8-a7d2-24e98eddc915" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityAddressCityOrTown_667969c8-b8e3-4cc8-a7d2-24e98eddc915" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_b6f560a1-49c1-482d-921e-73460f7d71d4" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityAddressStateOrProvince_b6f560a1-49c1-482d-921e-73460f7d71d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_1ce0c1e8-1f3c-40bc-bb02-d7c951ce8977" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityAddressPostalZipCode_1ce0c1e8-1f3c-40bc-bb02-d7c951ce8977" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_9a5102e9-f52b-4258-865a-d781a1617183" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_CityAreaCode_9a5102e9-f52b-4258-865a-d781a1617183" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_3d1b9065-2b11-4362-8f7a-904ddc91ccbf" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_LocalPhoneNumber_3d1b9065-2b11-4362-8f7a-904ddc91ccbf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_9ac159ab-5b63-48d3-af84-b95b56343a7b" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_WrittenCommunications_9ac159ab-5b63-48d3-af84-b95b56343a7b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_af842fb3-79f9-4134-990f-39e403fa3447" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_SolicitingMaterial_af842fb3-79f9-4134-990f-39e403fa3447" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_89e1d021-8aa2-409f-950d-183864c44921" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_PreCommencementTenderOffer_89e1d021-8aa2-409f-950d-183864c44921" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_16c7b46d-4563-4fbb-8a2a-8ff91728dbca" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_16c7b46d-4563-4fbb-8a2a-8ff91728dbca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_4271599c-c863-49c0-a582-dd8f93c779fe" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_Security12bTitle_4271599c-c863-49c0-a582-dd8f93c779fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_74ded8ed-03f6-4c85-bfc6-8b471c50d16e" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_TradingSymbol_74ded8ed-03f6-4c85-bfc6-8b471c50d16e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_110f39ac-b4b4-4af5-a0da-48e7c883936c" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_SecurityExchangeName_110f39ac-b4b4-4af5-a0da-48e7c883936c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_dd536dfb-b294-4007-a044-57cc94cf77bd" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_073a97f0-8351-43e1-8692-a407799d46ef" xlink:to="loc_dei_EntityEmergingGrowthCompany_dd536dfb-b294-4007-a044-57cc94cf77bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
