<SUBMISSION>
<ACCESSION-NUMBER>0001181431-06-056588
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20060929
<FILING-DATE>20061003
<DATE-OF-FILING-DATE-CHANGE>20061003
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Western Union CO
<CIK>0001365135
<ASSIGNED-SIC>7389
<IRS-NUMBER>204531180
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>100 SUMMIT AVENUE
<CITY>MONTVALE
<STATE>NJ
<ZIP>07645
<PHONE>(201) 263-5949
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>100 SUMMIT AVENUE
<CITY>MONTVALE
<STATE>NJ
<ZIP>07645
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Cole Royal
<CIK>0001374975
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32903
<FILM-NUMBER>061126508
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>402-951-7008
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>6855 PACIFIC STREET, AK-310
<CITY>OMAHA
<STATE>NE
<ZIP>68106
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd132258.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
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    <periodOfReport>2006-09-29</periodOfReport>

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        <issuerName>Western Union CO</issuerName>
        <issuerTradingSymbol>WU</issuerTradingSymbol>
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            <rptOwnerName>Cole Royal</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12500 EAST BELFORD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ENGLEWOOD</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; Gen. Man. Payment Serv.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <transactionDate>
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                <underlyingSecurityTitle>
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                <transactionShares>
                    <value>54887</value>
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                    <value>0</value>
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                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-02-08</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                    <value>54887</value>
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    <footnotes>
        <footnote id="F1">Restricted stock award which vests in full, if the executive is still employed by the Company at the time, on the third anniversary of the date of grant.</footnote>
        <footnote id="F2">Includes 284 shares acquired pursuant to The Western Union Company Employee Stock Purchase Plan and 3,392 shares acquired in connection with the distribution by First Data Corporation of shares of common stock of The Western Union Company.</footnote>
        <footnote id="F3">This option vests in four equal annual installments beginning on September 29, 2007.</footnote>
        <footnote id="F4">Represents option acquired by reporting person as a result of the adjustment of an option to purchase shares of First Data Corporation common stock held by the reporting person. This adjustment occurred pursuant to the terms of the Employee Matters Agreement, dated September 29, 2006, between The Western Union Company and First Data Corporation.</footnote>
        <footnote id="F5">This option is presently exercisable in full.</footnote>
        <footnote id="F6">This option vests in four equal installments beginning on February 8, 2007.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Sarah J. Kilgore as Attorney-in-Fact for Royal W. Cole</signatureName>
        <signatureDate>2006-10-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
