<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-04-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001535379</issuerCik>
        <issuerName>Cloudera, Inc.</issuerName>
        <issuerTradingSymbol>CLDR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001703921</rptOwnerCik>
            <rptOwnerName>Kimber Wayne</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CLOUDERA, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1001 PAGE MILL ROAD, BUILDING 3</rptOwnerStreet2>
            <rptOwnerCity>PALO ALTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94304</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President of Finance</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Common Stock</value>
            </securityTitle>
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            </transactionDate>
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                <footnoteId id="F2"/>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
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            </ownershipNature>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2062</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18563</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2017-09-15</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2962</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2962</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>38513</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Conversion of restricted stock units (&quot;RSUs&quot;) that have vested into shares of the Issuer's Common Stock. The RSUs vest and are settled upon the satisfaction of both a service based requirement and a liquidity event requirement. The service based requirement was satisfied with respect to 1/16th of the total number of RSUs on March 15, 2015 and thereafter is satisfied with respect to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement was satisfied on April 27, 2017, the effective date of the Issuer's initial public offering (the &quot;IPO Date&quot;).</footnote>
        <footnote id="F2">The RSUs vested on the IPO Date, June 15, 2017 and September 15, 2017, in accordance with the corresponding quarterly vesting schedule. Vested RSUs through September 15, 2017 will be settled in shares of the Issuer's Common Stock and delivered to the Reporting Person on a date to be determined by the Issuer's board of directors or an authorized committee thereof, which date is currently expected to be concurrent with the effective date of the offering described in the Form S-1 (File No. 333-220494), initially filed with the Securities and Exchange Commission on September 15, 2017. Subsequently thereafter, the RSUs will vest and be settled upon the satisfaction of the service based requirement in equal quarterly installments.</footnote>
        <footnote id="F3">Conversion of RSUs that have vested into shares of the Issuer's Common Stock. The RSUs vest and are settled upon the satisfaction of both a service based requirement and a liquidity event requirement. The service based requirement was satisfied with respect to 1/16th of the total number of RSUs on March 15, 2016 and thereafter is satisfied with respect to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement was satisfied on the IPO Date.</footnote>
        <footnote id="F4">Conversion of RSUs that have vested into shares of the Issuer's Common Stock. The RSUs vest and are settled upon the satisfaction of both a service based requirement and a liquidity event requirement. The service based requirement was satisfied with respect to 1/16th of the total number of RSUs on March 15, 2017 and thereafter is satisfied with respect to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement was satisfied on the IPO Date.</footnote>
        <footnote id="F5">Each RSU represents a contingent right to receive 1 share of the Issuer's Common Stock upon settlement for no consideration.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Wayne Kimber by Jay Wedge, Attorney-in-Fact</signatureName>
        <signatureDate>2017-09-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
