-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 QMD9Qxs5XE0b0MQNmDmkKs9q+MXn90IypD+nw1VJpPKkekkyOI2LFsQtaDGgqoud
 hb5IBaPxU6TIceKcgRc3Nw==

<SEC-DOCUMENT>0001181431-07-024382.txt : 20070406
<SEC-HEADER>0001181431-07-024382.hdr.sgml : 20070406
<ACCEPTANCE-DATETIME>20070406204616
ACCESSION NUMBER:		0001181431-07-024382
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070403
FILED AS OF DATE:		20070406
DATE AS OF CHANGE:		20070406

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BURLINGTON NORTHERN SANTA FE CORP
		CENTRAL INDEX KEY:			0000934612
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				411804964
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2650 LOU MENK DR
		CITY:			FT WORTH
		STATE:			TX
		ZIP:			76131-2830
		BUSINESS PHONE:		8007952673

	MAIL ADDRESS:	
		STREET 1:		2650 LOU MENK DRIVE
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76131-2830

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BURLINGTON NORTHERN SANTE FE CORP
		DATE OF NAME CHANGE:	19950913

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BNSF CORP
		DATE OF NAME CHANGE:	19941223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BERKSHIRE HATHAWAY INC
		CENTRAL INDEX KEY:			0001067983
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11535
		FILM NUMBER:		07754998

	BUSINESS ADDRESS:	
		STREET 1:		1440 KIEWIT PLZ
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131
		BUSINESS PHONE:		4023461400

	MAIL ADDRESS:	
		STREET 1:		1440 KIEWIT PLAZA
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131

	FORMER NAME:	
		FORMER CONFORMED NAME:	NBH INC
		DATE OF NAME CHANGE:	19980810

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OBH INC
		CENTRAL INDEX KEY:			0000109694
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11535
		FILM NUMBER:		07754999

	BUSINESS ADDRESS:	
		STREET 1:		1440 KIEWIT PLZ
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131
		BUSINESS PHONE:		4023461400

	MAIL ADDRESS:	
		STREET 1:		1440 KIEWIT PLAZA
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131

	FORMER NAME:	
		FORMER CONFORMED NAME:	BERKSHIRE HATHAWAY INC/DE
		DATE OF NAME CHANGE:	19990520

	FORMER NAME:	
		FORMER CONFORMED NAME:	BERKSHIRE HATHAWAY INC /DE/
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BUFFETT WARREN E
		CENTRAL INDEX KEY:			0000315090

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11535
		FILM NUMBER:		07755000

	BUSINESS ADDRESS:	
		STREET 1:		1440 KIEWIT PLZ 3555 FARNAM ST
		STREET 2:		STE 1440
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131

	MAIL ADDRESS:	
		STREET 1:		1400 KIEWIT PLZ 3555 FARNAM ST
		STREET 2:		STE 1440
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68131
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd154088.xml
<DESCRIPTION>BNI FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-04-03</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000934612</issuerCik>
        <issuerName>BURLINGTON NORTHERN SANTA FE CORP</issuerName>
        <issuerTradingSymbol>BNI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001067983</rptOwnerCik>
            <rptOwnerName>BERKSHIRE HATHAWAY INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1440 KIEWIT PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000315090</rptOwnerCik>
            <rptOwnerName>BUFFETT WARREN E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1440 KIEWIT PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000109694</rptOwnerCik>
            <rptOwnerName>OBH INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1440 KIEWIT PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>37380530</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes 1 and 2</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares are owned by the following subsidiaries of Berkshire Hathaway Inc.: National Indemnity Company (&quot;NICO&quot;) (12,758,030 shares); National Fire &amp; Marine Insurance Company (&quot;NFMIC&quot;) (1,322,100 shares); and Columbia Insurance Company (&quot;Columbia&quot;) (23,300,400 shares).  Each of NICO, NFMIC and Columbia is a subsidiary of OBH, Inc. (&quot;OBH&quot;).  OBH is a subsidiary of Berkshire Hathaway Inc. (&quot;Berkshire&quot;).</footnote>
        <footnote id="F2">(FN 1, contd.)  As OBH and Berkshire are each in the chain of ownership of NICO, NFMIC and Columbia, each may be deemed presently to both beneficially own and have a pecuniary interest in all shares of Common Stock presently owned by each subsidiary.  Warren E. Buffett, as the controlling stockholder of Berkshire, may be deemed presently to beneficially own, but only to the extent he has a pecuniary interest in, the shares of Common Stock presently owned by each such subsidiary.  Mr. Buffett disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Berkshire Hathaway Inc., by Marc D. Hamburg</signatureName>
        <signatureDate>2007-04-06</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Warren E. Buffett</signatureName>
        <signatureDate>2007-04-06</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OBH, Inc., by Marc D. Hamburg</signatureName>
        <signatureDate>2007-04-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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