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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-06-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000733269</issuerCik>
        <issuerName>ACXIOM CORP</issuerName>
        <issuerTradingSymbol>ACXM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001369558</rptOwnerCik>
            <rptOwnerName>Howe Scott E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ACXIOM CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>301 E. DAVE WARD DRIVE</rptOwnerStreet2>
            <rptOwnerCity>CONWAY</rptOwnerCity>
            <rptOwnerState>AR</rptOwnerState>
            <rptOwnerZipCode>72032</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO &amp; President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.10 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2017-06-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>61022</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>26.22</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>830907</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $.10 Par Value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2727.114</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Managed Account 1</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This is a grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the registrant's common stock. Vesting will begin one year from May 23, 2017, with 1/4 of the total becoming vested on that date and 1/16 quarterly thereafter until 100% vested, contingent upon the reporting person's continued employment with the registrant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Catherine L. Hughes, Attorney-in-Fact For: Scott E. Howe</signatureName>
        <signatureDate>2017-06-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2017-06-16
0
0000733269
ACXIOM CORP
ACXM
0001369558
Howe Scott E
ACXIOM CORPORATION
301 E. DAVE WARD DRIVE
CONWAY
AR
72032
1
1
0
0
CEO & President
Common Stock, $.10 Par Value
2017-06-16
4
A
0
61022
26.22
A
830907
D
Common Stock, $.10 Par Value
2727.114
I
by Managed Account 1
This is a grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the registrant's common stock. Vesting will begin one year from May 23, 2017, with 1/4 of the total becoming vested on that date and 1/16 quarterly thereafter until 100% vested, contingent upon the reporting person's continued employment with the registrant.
By: Catherine L. Hughes, Attorney-in-Fact For: Scott E. Howe
2017-06-20