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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:47b3ceee-be92-4e4b-be39-c434d6543039,g:5298aa29-c286-4c3e-abbb-25fffd45126e-->
<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-20201210.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_e103064d-3951-4eac-91a9-f7c4e885964f" 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_50bd3f17-75db-4fad-aa6c-c84645390ba7" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_DocumentType_50bd3f17-75db-4fad-aa6c-c84645390ba7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_eacd5db8-7559-4a80-85c3-a440d375d70a" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_DocumentPeriodEndDate_eacd5db8-7559-4a80-85c3-a440d375d70a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_954625e2-51bc-4d5a-90c2-844f5af70d35" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityRegistrantName_954625e2-51bc-4d5a-90c2-844f5af70d35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_421689e9-b7b8-40dc-987b-ad41f09ae245" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityCentralIndexKey_421689e9-b7b8-40dc-987b-ad41f09ae245" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_09b66175-359e-455e-8eea-d9d7797587f9" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_AmendmentFlag_09b66175-359e-455e-8eea-d9d7797587f9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_9f9c998a-fa60-42a3-aa2f-63aae40ecd6b" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityIncorporationStateCountryCode_9f9c998a-fa60-42a3-aa2f-63aae40ecd6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_563b0217-4f6e-4b92-942d-4fd00b493728" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityFileNumber_563b0217-4f6e-4b92-942d-4fd00b493728" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_6ecacc14-096d-45ef-9c24-877148f12d56" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityTaxIdentificationNumber_6ecacc14-096d-45ef-9c24-877148f12d56" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_ed4898d6-3155-464f-88e8-f71023bd92c1" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityAddressAddressLine1_ed4898d6-3155-464f-88e8-f71023bd92c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_1a46882d-3dc9-45bb-b61e-da162a8ede81" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityAddressCityOrTown_1a46882d-3dc9-45bb-b61e-da162a8ede81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_c5f01540-ee5f-4d04-ae70-cf5026a8fef0" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityAddressStateOrProvince_c5f01540-ee5f-4d04-ae70-cf5026a8fef0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_ae63923d-5dc7-4fe8-b133-db37cf6921cb" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityAddressPostalZipCode_ae63923d-5dc7-4fe8-b133-db37cf6921cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_c7e7edac-cf03-490a-bdac-73a5ff7643d1" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_CityAreaCode_c7e7edac-cf03-490a-bdac-73a5ff7643d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_5a29d2fc-757c-466d-b3e1-021e697b72b0" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_LocalPhoneNumber_5a29d2fc-757c-466d-b3e1-021e697b72b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_db4890d5-a4b4-4eb9-9279-d73be119b40a" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_WrittenCommunications_db4890d5-a4b4-4eb9-9279-d73be119b40a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_e262d8f3-73ab-43eb-bc7e-9e55f70d7e9e" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_SolicitingMaterial_e262d8f3-73ab-43eb-bc7e-9e55f70d7e9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_cee2aef4-8be5-4ad4-bc5c-7848dd75ca06" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_PreCommencementTenderOffer_cee2aef4-8be5-4ad4-bc5c-7848dd75ca06" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_813dca8a-2f19-4215-ba10-62d79663a686" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_813dca8a-2f19-4215-ba10-62d79663a686" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_c36c497e-589f-418a-a94b-7d25d1c6180b" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_Security12bTitle_c36c497e-589f-418a-a94b-7d25d1c6180b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_02a29827-fbcf-4e55-8d34-530fb67084f8" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_TradingSymbol_02a29827-fbcf-4e55-8d34-530fb67084f8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_517881f6-8f05-41e8-b3bd-20a776bdbd69" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_SecurityExchangeName_517881f6-8f05-41e8-b3bd-20a776bdbd69" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_25c79892-a930-4fa1-a2e4-deeb920a0a2a" 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_e103064d-3951-4eac-91a9-f7c4e885964f" xlink:to="loc_dei_EntityEmergingGrowthCompany_25c79892-a930-4fa1-a2e4-deeb920a0a2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
