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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:0ec08c30-e31d-4e13-b8d5-2f998fd33f98,g:c31aed37-af38-4528-b1d2-f14d0dcaa848-->
<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-20210113.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_ee028018-4204-49a1-99c8-c9f94416a101" 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_414ebb62-5e53-4871-a1bf-cad69d9154e0" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_DocumentType_414ebb62-5e53-4871-a1bf-cad69d9154e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_4b69044e-ba10-47bd-aa0f-32d3f73fe368" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_DocumentPeriodEndDate_4b69044e-ba10-47bd-aa0f-32d3f73fe368" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_dc2b47e6-d8cc-449b-aabc-5ae0fb49a8ee" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityRegistrantName_dc2b47e6-d8cc-449b-aabc-5ae0fb49a8ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_5075d5a3-77bd-47b8-999d-3c3514c70c7a" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityCentralIndexKey_5075d5a3-77bd-47b8-999d-3c3514c70c7a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_dd41b716-3ada-4170-8460-26e557dc65a1" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_AmendmentFlag_dd41b716-3ada-4170-8460-26e557dc65a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_6b81a5fa-b29a-4f08-991a-d03da678c112" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityIncorporationStateCountryCode_6b81a5fa-b29a-4f08-991a-d03da678c112" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_03e4c3a0-7ca6-4b39-99dc-c6367fd7ad1b" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityFileNumber_03e4c3a0-7ca6-4b39-99dc-c6367fd7ad1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01022809-663d-40e3-93e2-7913f4ecade9" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityTaxIdentificationNumber_01022809-663d-40e3-93e2-7913f4ecade9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_85e2704a-4124-474b-aeea-c0023a337cea" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityAddressAddressLine1_85e2704a-4124-474b-aeea-c0023a337cea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_71486e48-1fe7-4467-bb31-a666fc0ee2cf" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityAddressCityOrTown_71486e48-1fe7-4467-bb31-a666fc0ee2cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_7a5bfc4c-6f22-4605-ab8e-f79ee87d4482" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityAddressStateOrProvince_7a5bfc4c-6f22-4605-ab8e-f79ee87d4482" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_7d232485-a7a9-4d09-8938-2a4c89f31d5a" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityAddressPostalZipCode_7d232485-a7a9-4d09-8938-2a4c89f31d5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_a5f7477f-3232-4a46-96d1-4dc817a4163b" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_CityAreaCode_a5f7477f-3232-4a46-96d1-4dc817a4163b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_ec39333d-f9c4-4735-8819-dd7a328178eb" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_LocalPhoneNumber_ec39333d-f9c4-4735-8819-dd7a328178eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_3135ea01-0ddf-40cc-9f58-a025bf460724" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_WrittenCommunications_3135ea01-0ddf-40cc-9f58-a025bf460724" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_84589f43-fb71-4d4d-a213-003717b7b240" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_SolicitingMaterial_84589f43-fb71-4d4d-a213-003717b7b240" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_0e18e9e0-f5f1-4557-9894-6dc051e498f5" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_PreCommencementTenderOffer_0e18e9e0-f5f1-4557-9894-6dc051e498f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_9631e9ea-c982-4da2-92f6-20b839e15fe7" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_9631e9ea-c982-4da2-92f6-20b839e15fe7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_f5f5d23d-f2ca-4e2b-8279-cea048d1fda0" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_Security12bTitle_f5f5d23d-f2ca-4e2b-8279-cea048d1fda0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_52be5942-076a-48c6-9794-1d3888ac1f1c" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_TradingSymbol_52be5942-076a-48c6-9794-1d3888ac1f1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_f881f057-e49c-4f9d-9ee8-99ae82747138" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_SecurityExchangeName_f881f057-e49c-4f9d-9ee8-99ae82747138" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_a6fc6c0b-9d80-4e9a-9be9-0b46d7671be4" 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_ee028018-4204-49a1-99c8-c9f94416a101" xlink:to="loc_dei_EntityEmergingGrowthCompany_a6fc6c0b-9d80-4e9a-9be9-0b46d7671be4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
