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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000100885-06-000192.txt : 20060728
<SEC-HEADER>0000100885-06-000192.hdr.sgml : 20060728
<ACCEPTANCE-DATETIME>20060728092454
ACCESSION NUMBER:		0000100885-06-000192
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20060727
FILED AS OF DATE:		20060728
DATE AS OF CHANGE:		20060728

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNION PACIFIC CORP
		CENTRAL INDEX KEY:			0000100885
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				132626465
		STATE OF INCORPORATION:			UT
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1400 DOUGLAS STREET
		STREET 2:		STOP 0310
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68179
		BUSINESS PHONE:		402 544 5214

	MAIL ADDRESS:	
		STREET 1:		1400 DOUGLAS STREET
		STREET 2:		STOP 0310
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68179

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Card Andrew H JR
		CENTRAL INDEX KEY:			0001369941

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06075
		FILM NUMBER:		06986090

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		703-243-8515

	MAIL ADDRESS:	
		STREET 1:		5747 N 4TH STREET
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22205
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-07-27</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000100885</issuerCik>
        <issuerName>UNION PACIFIC CORP</issuerName>
        <issuerTradingSymbol>UNP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001369941</rptOwnerCik>
            <rptOwnerName>Card Andrew H JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5747 N. 4TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ARLINGTON</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22205</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>By: Michael M. Hemenway, Attorney-in-Fact  For: Andrew H. Card Jr.</signatureName>
        <signatureDate>2006-07-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>poacard.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>

SECTION 16 OF THE
SECURITIES EXCHANGE ACT OF 1934

POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENTS THAT I, Andrew H. Card Jr.,
a member of the Board of Directors of Union Pacific
Corporation,a Utah corporation (the "Company"),
do hereby appoint Barbara W. Schaefer, Thomas E. Whitaker,
Michael M. Hemenway and Trevor L. Kingston, and each of
them acting individually, as my true and lawful attorney-in-fact,
each with power to act without the other in full power of
substitution, to execute, deliver and file, for and on my
behalf, and in my name and in my capacity as a officer
of Union Pacific Corporation, any and all Forms 4 or Forms 5
under Section 16 of the Securities Exchange Act of 1934 and
the rules and interpretations promulgated thereunder,
and any other documents in support thereof or supplemental or
amendatory thereto, with respect to the ownership by
or attributable to me, directly or indirectly, of equity
securities of the Company, or derivative securities
relating thereto, hereby granting to such attorneys
and each of them full power and authority to do and
perform each and every act and thing whatsoever as
such attorney or attorneys may deem necessary or
advisable to carry out fully the intent of the foregoing
as I might or could do personally or in my capacity as a
officer, hereby ratifying and confirming all acts and
things which such attorney or attorneys may do or cause
to be done by virtue of this Power of Attorney.

IN WITNESS WHEREOF, I have executed this Power of
Attorney as of July 27, 2006.



__________________________________
Andrew H. Card Jr.

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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