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

    <schemaVersion>X0304</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-12-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001361937</issuerCik>
        <issuerName>EV Energy Partners, LP</issuerName>
        <issuerTradingSymbol>EVEP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001376869</rptOwnerCik>
            <rptOwnerName>EnCap V-B Acquisitions, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001376863</rptOwnerCik>
            <rptOwnerName>EnCap V-B Acquisitions GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001302313</rptOwnerCik>
            <rptOwnerName>EnCap Energy Capital Fund V-B L P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA, SUITE 3150</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Director by deputization</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001290910</rptOwnerCik>
            <rptOwnerName>EnCap Investments L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001290911</rptOwnerCik>
            <rptOwnerName>EnCap Investments GP, L.L.C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001376870</rptOwnerCik>
            <rptOwnerName>EnCap Equity Fund V GP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001229915</rptOwnerCik>
            <rptOwnerName>ZORICH ROBERT L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001167138</rptOwnerCik>
            <rptOwnerName>MILLER DAVID B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3811 TURTLE CREEK BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1080</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001142791</rptOwnerCik>
            <rptOwnerName>PHILLIPS D MARTIN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001290912</rptOwnerCik>
            <rptOwnerName>RNBD GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3150</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class B Units</value>
            </securityTitle>
            <transactionDate>
                <value>2011-12-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>406315</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>406315</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-12-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>994</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Units</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>994</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>994</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Class B Units were issued by EV Energy Partners, L.P. (the &quot;Issuer&quot;) to EV Energy Partners GP, L.P., the  general partner of the Issuer, when the General Partner made its IDR Reset Election, as defined in the Issuer's partnership agreement.  The General Partner subsequently distributed on a pro rata basis the Class B Units to its partners, including EnCap V-B Acquisitions, L.P. Upon the election of the holder of the Class B Units, the Class B Units will convert on a unit for unit basis into common units of the Issuer one year from the date of issuance.</footnote>
        <footnote id="F2">Each of the reporting persons disclaims beneficial ownership in excess of their respective pecuniary interest in such securities.</footnote>
        <footnote id="F3">Each Phantom Unit is the economic equivalent of one Common Unit.</footnote>
        <footnote id="F4">The Phantom Units will vest 25% on January 15, 2013, January 15, 2014, January 15, 2015 and January 15, 2016.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>EnCap V-B Acquisitions L.P. by EnCap V-B Acquisitions GP LLC its GP by EnCap Energy Capital Fund V-B, L.P. its memb by EnCap Equity Fund V GP, L.P. its GP by EnCap Investments L.P. its GP by EnCap Investments GP L.L.C. its GP by /s/ Gary Petersen, Sr.MD</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EnCap V-B Acquisitions GP LLC, by EnCap Energy Capital Fund V-B LP., its member, by EnCap Equity Fund V GP L.P., its GP, by EnCap Investments L.P., its GP, by EnCap Investments GP L.L.C., its GP, by /s/ Gary Petersen, Senior Managing Director</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EnCap Energy Capital Fund V-B L.P., by EnCap Equity Fund V GP L.P., its GP, by EnCap Investments L.P., its GP, by EnCap Investments GP L.L.C., its GP, by /s/ Gary Petersen, Senior Managing Director</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EnCap Equity Fund V GP L.P., by EnCap Investments L.P., its GP, by EnCap Investments GP L.L.C., its GP, by /s/ Gary Petersen, Senior Managing Director</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EnCap Investments L.P., by EnCap Investments GP L.L.C., its GP, by /s/ Gary Petersen, Senior Managing Director</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>EnCap Investments GP L.L.C., by /s/ Gary Petersen, Senior Managing Director</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>RNBD GP LLC, by /s/ D. Martin Phillips, Member</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ David B. Miller</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert L. Zorich</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ D. Martin Phillips</signatureName>
        <signatureDate>2011-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
