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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

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

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <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>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>306</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.87</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-02-04</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>300000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>16.02</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-12-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7100</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14350</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>33000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>47400</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock option is fully vested and immediately exercisable.</footnote>
        <footnote id="F2">The stock option vested and became exercisable, and shall continue to vest and become exercisable, in 48 equal monthly installments beginning on January 1, 2015, until such time as the option is 100% vested, subject to the continuing employment of the Reporting Person on each vesting date.</footnote>
        <footnote id="F3">The restricted stock units (&quot;RSUs&quot;) 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 granted on March 15, 2015, and thereafter will be satisfied with respect to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement will be satisfied upon the Reporting Person's continued employment through the effective date of the Issuer's initial public offering (the &quot;IPO Date&quot;).  On the IPO Date, those RSUs for which the service based vesting requirement has been satisfied will vest and will be settled in shares of the Issuer's common stock and delivered to the Reporting Person on a date that is following the 180th day after the IPO Date as determined by the Issuer's board of directors.</footnote>
        <footnote id="F4">Each RSU represents a contingent right to receive 1 share of the Issuer's Common Stock upon settlement for no consideration.</footnote>
        <footnote id="F5">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 granted on March 15, 2016, and thereafter will be satisfied with respect to vest as to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement will be satisfied upon the Reporting Person's continued employment through the IPO Date.  On the IPO Date, those RSUs for which the service based vesting requirement has been satisfied will vest and will be settled in shares of the Issuer's common stock and delivered to the Reporting Person on a date that is following the 180th day after the IPO Date as determined by the Issuer's board of directors.</footnote>
        <footnote id="F6">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 granted on March 15, 2017, and thereafter will be satisfied with respect to 1/16th of the total number of RSUs in equal quarterly installments. The liquidity event requirement will be satisfied upon the Reporting Person's continued employment through the IPO Date.  On the IPO Date, those RSUs for which the service based vesting requirement has been satisfied will vest and will be settled in shares of the Issuer's common stock and delivered to the Reporting Person on a date that is following the 180th day after the IPO Date as determined by the Issuer's board of directors.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Wayne Kimber by Jay Wedge, Attorney-in-Fact</signatureName>
        <signatureDate>2017-04-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
