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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 QLr4P9prgZWdkLV3HI4OvQ==

<SEC-DOCUMENT>0001104659-10-024699.txt : 20100503
<SEC-HEADER>0001104659-10-024699.hdr.sgml : 20100503
<ACCEPTANCE-DATETIME>20100503171422
ACCESSION NUMBER:		0001104659-10-024699
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100405
FILED AS OF DATE:		20100503
DATE AS OF CHANGE:		20100503

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TERRA NITROGEN CO L P /DE
		CENTRAL INDEX KEY:			0000879575
		STANDARD INDUSTRIAL CLASSIFICATION:	AGRICULTURE CHEMICALS [2870]
		IRS NUMBER:				731389684
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		TERRA CENTRE 600 FOURTH STREET
		STREET 2:		PO BOX 6000
		CITY:			SIOUX CITY
		STATE:			IA
		ZIP:			51102-6000
		BUSINESS PHONE:		7122771340

	MAIL ADDRESS:	
		STREET 1:		TERRA CENTER 600 FOURTH STREET
		STREET 2:		PO BOX 6000
		CITY:			SIOUX CITY
		STATE:			IA
		ZIP:			51102-6000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CF Industries Holdings, Inc.
		CENTRAL INDEX KEY:			0001324404
		STANDARD INDUSTRIAL CLASSIFICATION:	AGRICULTURE CHEMICALS [2870]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	033-43007
		FILM NUMBER:		10793929

	BUSINESS ADDRESS:	
		STREET 1:		4 PARKWAY NORTH
		STREET 2:		SUITE 400
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
		BUSINESS PHONE:		(847) 405-2400

	MAIL ADDRESS:	
		STREET 1:		4 PARKWAY NORTH
		STREET 2:		SUITE 400
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>a3.xml
<DESCRIPTION>3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2010-04-05</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000879575</issuerCik>
        <issuerName>TERRA NITROGEN CO L P /DE</issuerName>
        <issuerTradingSymbol>TNH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001324404</rptOwnerCik>
            <rptOwnerName>CF Industries Holdings, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CF INDUSTRIES HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>4 PARKWAY NORTH, SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>DEERFIELD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60015</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13889014</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These units are held directly or indirectly by wholly-owned subsidiaries of CF Industries Holdings, Inc. One such subsidiary also owns a 1/99th Partnership Interest as a general partner of  Terra Nitrogen Company, L.P.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Douglas C. Barnard, Vice President, General Counsel, and Corporate Secretary of CF Industries Holdings, Inc.</signatureName>
        <signatureDate>2010-05-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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