<SEC-DOCUMENT>0001140361-11-028170.txt : 20110517
<SEC-HEADER>0001140361-11-028170.hdr.sgml : 20110517
<ACCEPTANCE-DATETIME>20110517134532
ACCESSION NUMBER:		0001140361-11-028170
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110516
FILED AS OF DATE:		20110517
DATE AS OF CHANGE:		20110517

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			STEINBERG JOSEPH S
		CENTRAL INDEX KEY:			0000924255
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05721
		FILM NUMBER:		11850856

	MAIL ADDRESS:	
		STREET 1:		C/O LEUCADIA NATIONAL CORP
		STREET 2:		315 PARK AVENUE SOUTH
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10010

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LEUCADIA NATIONAL CORP
		CENTRAL INDEX KEY:			0000096223
		STANDARD INDUSTRIAL CLASSIFICATION:	LUMBER & WOOD PRODUCTS (NO FURNITURE) [2400]
		IRS NUMBER:				132615557
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		315 PARK AVE S
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10010
		BUSINESS PHONE:		2124601900

	MAIL ADDRESS:	
		STREET 1:		315 PARK AVENUE SOUTH
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10010

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TALCOTT NATIONAL CORP
		DATE OF NAME CHANGE:	19800603
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-05-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000096223</issuerCik>
        <issuerName>LEUCADIA NATIONAL CORP</issuerName>
        <issuerTradingSymbol>LUK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000924255</rptOwnerCik>
            <rptOwnerName>STEINBERG JOSEPH S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LEUCADIA NATIONAL CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>315 PARK AVENUE SOUTH</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Share Purchase Warrant (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>33.84</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-05-16</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-05-16</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-03-07</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Warrant was granted on March 7, 2011 in a transaction exempt under Rule 16b-3(d) and (e) under the Securities Exchange Act of 1934, as amended, subject to shareholder approval of the Leucadia National Corporation 2011 Senior Executive Warrant Plan.  Shareholder approval of the plan was received on May 16, 2011.  Pursuant to its terms, the Warrant becomes exercisable at the rate of 20% per year, with initial vesting on May 16, 2011, and subsequent vesting on March 7 of each of 2012, 2013, 2014 and 2015.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joseph S. Steinberg</signatureName>
        <signatureDate>2011-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
