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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001268271</rptOwnerCik>
            <rptOwnerName>MEYER JOHN A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ACXIOM CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>601 E. 3RD STREET</rptOwnerStreet2>
            <rptOwnerCity>LITTLE ROCK</rptOwnerCity>
            <rptOwnerState>AR</rptOwnerState>
            <rptOwnerZipCode>72201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.10 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>195000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>325500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Each performance unit represents a contingent right to receive one share of registrant's common stock.  Vesting will occur on May 22, 2011, contingent upon the reporting person's having satisfied certain performance criteria approved by the Compensation Committee of the registrant's Board of Directors, and contingent upon the reporting person's continued employment with the registrant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Catherine L. Hughes, Attorney-in-Fact  For: John A. Meyer</signatureName>
        <signatureDate>2008-05-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2008-05-22
0
0000733269
ACXIOM CORP
ACXM
0001268271
MEYER JOHN A
ACXIOM CORPORATION
601 E. 3RD STREET
LITTLE ROCK
AR
72201
1
1
0
0
Chief Executive Officer
Common Stock, $.10 Par Value
2008-05-22
4
A
0
195000
0
A
325500
D
Each performance unit represents a contingent right to receive one share of registrant's common stock.  Vesting will occur on May 22, 2011, contingent upon the reporting person's having satisfied certain performance criteria approved by the Compensation Committee of the registrant's Board of Directors, and contingent upon the reporting person's continued employment with the registrant.
By: Catherine L. Hughes, Attorney-in-Fact  For: John A. Meyer
2008-05-27