-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 C0oHls1q8JQKReA0Uio+bP/hftTpWSxM9uK9J6D8jTWFpzBeqmg6Z9oV+n7tFWY8
 qcIadiN0s9J/WKfIPzieqw==

<SEC-DOCUMENT>0000902664-09-000872.txt : 20090217
<SEC-HEADER>0000902664-09-000872.hdr.sgml : 20090216
<ACCEPTANCE-DATETIME>20090217095622
ACCESSION NUMBER:		0000902664-09-000872
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090211
FILED AS OF DATE:		20090217
DATE AS OF CHANGE:		20090217

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOHN CHRISTOPHER
		CENTRAL INDEX KEY:			0001440704

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08022
		FILM NUMBER:		09607692

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		44 20 7440 2332

	MAIL ADDRESS:	
		STREET 1:		C/O THE CHILDREN'S INVESTMENT FUND MGMT
		STREET 2:		7 CLIFFORD ST
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1S 2WE

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CSX CORP
		CENTRAL INDEX KEY:			0000277948
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				621051971
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1226

	BUSINESS ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
		BUSINESS PHONE:		9043593200

	MAIL ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Childrens Investment Fund Management (UK) LLP
		CENTRAL INDEX KEY:			0001362598
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08022
		FILM NUMBER:		09607691

	BUSINESS ADDRESS:	
		STREET 1:		7 CLIFFORD STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1S 2WE
		BUSINESS PHONE:		44 207 440 2330

	MAIL ADDRESS:	
		STREET 1:		7 CLIFFORD STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1S 2WE

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHILDREN'S INVESTMENT MASTER FUND
		CENTRAL INDEX KEY:			0001441079
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08022
		FILM NUMBER:		09607689

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 309GT UGLAND HOUSE
		STREET 2:		SOUTH CHURCH STREET, GEORGE TOWN
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			BWI
		BUSINESS PHONE:		44 207 440 2330

	MAIL ADDRESS:	
		STREET 1:		PO BOX 309GT UGLAND HOUSE
		STREET 2:		SOUTH CHURCH STREET, GEORGE TOWN
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			BWI

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHILDREN'S INVESTMENT FUND MANAGEMENT (CAYMAN) LTD.
		CENTRAL INDEX KEY:			0001441080
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08022
		FILM NUMBER:		09607690

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 309GT UGLAND HOUSE
		STREET 2:		SOUTH CHURCH STREET, GEORGE TOWN
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			BWI
		BUSINESS PHONE:		44 207 440 2330

	MAIL ADDRESS:	
		STREET 1:		PO BOX 309GT UGLAND HOUSE
		STREET 2:		SOUTH CHURCH STREET, GEORGE TOWN
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			BWI
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>p09-0513form4_ex.xml
<DESCRIPTION>CSX CORP.
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-02-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000277948</issuerCik>
        <issuerName>CSX CORP</issuerName>
        <issuerTradingSymbol>CSX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001440704</rptOwnerCik>
            <rptOwnerName>HOHN CHRISTOPHER</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THE CHILDREN'S INVESTMENT FUND MGMT</rptOwnerStreet1>
            <rptOwnerStreet2>7 CLIFFORD ST</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>X0 W1S 2WE</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001362598</rptOwnerCik>
            <rptOwnerName>Childrens Investment Fund Management (UK) LLP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7 CLIFFORD STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>W1S 2WE</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001441080</rptOwnerCik>
            <rptOwnerName>CHILDREN'S INVESTMENT FUND MANAGEMENT (CAYMAN) LTD.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 309GT UGLAND HOUSE</rptOwnerStreet1>
            <rptOwnerStreet2>SOUTH CHURCH STREET, GEORGE TOWN</rptOwnerStreet2>
            <rptOwnerCity>GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode>BWI</rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001441079</rptOwnerCik>
            <rptOwnerName>CHILDREN'S INVESTMENT MASTER FUND</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 309GT UGLAND HOUSE</rptOwnerStreet1>
            <rptOwnerStreet2>SOUTH CHURCH STREET, GEORGE TOWN</rptOwnerStreet2>
            <rptOwnerCity>GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode>BWI</rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $1.00 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2009-02-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $1.00 par value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17797148</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Exempt payment to Mr. Hohn of director's fees and/or annual retainer in the form of Common Stock of the Issuer pursuant to
 the CSX Corporation Stock Plan for Directors.  Such shares of Common Stock are held for the benefit of The Children's
 Investment Master Fund.</footnote>
        <footnote id="F2">Includes shares of Common Stock of the Issuer beneficially owned by The Children's Investment Master Fund, a Cayman Islands
 exempted company (the &quot;TCI Fund&quot;).  The Children's Investment Fund Management (Cayman) Ltd., a Cayman Islands exempted
 company (&quot;TCIF&quot;) and The Children's Investment Fund Management (UK) LLP, an English limited liability partnership (&quot;TCIF
 UK&quot;) serve as management companies for the TCI Fund. Christopher Hohn is the managing partner of TCIF UK and the 100% owner
 of TCIF, and therefore is in a position to determine the investment and voting decisions made by the TCI Fund.</footnote>
        <footnote id="F3">The Reporting Persons disclaim beneficial ownership of any and all securities reported herein in excess of their respective
 pecuniary interest therein and this report shall not be deemed an admission that the Reporting Persons are the beneficial
 owners of such securities for purposes of Section 16 or for any other purpose.  Mr. Hohn is a director of the Issuer.</footnote>
    </footnotes>

    <remarks>TCIF UK, TCIF and the TCI Fund may be deemed to be directors by deputization by virtue of the fact that Mr. Hohn, the
 managing partner of TCIF UK and the 100% owner of TCIF, serves on the board of directors of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ Christopher Hohn</signatureName>
        <signatureDate>2009-02-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ The Children's Investment Fund Management (UK) LLP, by Christopher Hohn, Managing Partner</signatureName>
        <signatureDate>2009-02-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ The Children's Investment Fund Management (Cayman) Ltd., by David de Rosa, Director</signatureName>
        <signatureDate>2009-02-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ The Children's Investment Master Fund, by David de Rosa, Director</signatureName>
        <signatureDate>2009-02-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----