-----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,
 Bq1qmS6du+quFuTVgm7GRBZ1c0GmsqUlub0TLNlf++kQh6Xt+7n9W5t8TeYdidkF
 nf6WPINwkwBVSX6De3wO2Q==

<SEC-DOCUMENT>0000070530-05-000045.txt : 20050615
<SEC-HEADER>0000070530-05-000045.hdr.sgml : 20050614
<ACCEPTANCE-DATETIME>20050615190214
ACCESSION NUMBER:		0000070530-05-000045
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050613
FILED AS OF DATE:		20050615
DATE AS OF CHANGE:		20050615

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL SEMICONDUCTOR CORP
		CENTRAL INDEX KEY:			0000070530
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				952095071
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		2900 SEMICONDUCTOR DR
		STREET 2:		PO BOX 58090
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95052-8090
		BUSINESS PHONE:		4087215000

	MAIL ADDRESS:	
		STREET 1:		2900 SEMICONDUCTOR DR
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95052-8090

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Samath Jamie
		CENTRAL INDEX KEY:			0001330269

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06453
		FILM NUMBER:		05898649

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		408-721-3127

	MAIL ADDRESS:	
		STREET 1:		NATIONAL SEMICONDUCTOR
		STREET 2:		2900 SEMICONDUCTOR DR, M/S C1-640
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95051
</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>2005-06-13</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000070530</issuerCik>
        <issuerName>NATIONAL SEMICONDUCTOR CORP</issuerName>
        <issuerTradingSymbol>NSM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001330269</rptOwnerCik>
            <rptOwnerName>Samath Jamie</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>STOCK ADMINISTRATION, MAIL STOP C1-640</rptOwnerStreet1>
            <rptOwnerStreet2>2900 SEMICONDUCTOR DR.</rptOwnerStreet2>
            <rptOwnerCity>SANTA CLARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95051</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Corporate Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5548.6948</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6015.1832</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.3</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2003-10-17</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-10-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2000-04-29</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-04-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6600</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.5</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>1999-07-28</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2008-07-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4400</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.545</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2004-02-11</value>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2013-02-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2200</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.9375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>1999-06-29</value>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2008-06-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4100</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.531</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2000-01-21</value>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-01-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>8.025</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2003-08-06</value>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-08-06</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>8.375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2004-04-15</value>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <value>2013-04-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2200</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.625</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2004-07-15</value>
                <footnoteId id="F9"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-07-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>19800</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.975</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2002-04-17</value>
                <footnoteId id="F10"/>
            </exerciseDate>
            <expirationDate>
                <value>2011-04-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>11000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>13.875</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2002-06-19</value>
                <footnoteId id="F11"/>
            </exerciseDate>
            <expirationDate>
                <value>2011-06-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>8000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.9375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2000-08-18</value>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-08-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17.1</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2003-04-16</value>
                <footnoteId id="F13"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-04-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>19.1</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2005-07-13</value>
                <footnoteId id="F14"/>
            </exerciseDate>
            <expirationDate>
                <value>2010-07-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>22500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>19.15</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2005-01-27</value>
                <footnoteId id="F15"/>
            </exerciseDate>
            <expirationDate>
                <value>2010-01-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5320</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>29.9375</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2001-04-19</value>
                <footnoteId id="F16"/>
            </exerciseDate>
            <expirationDate>
                <value>2010-04-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock option became exercisable in four equal annual installments beginning on October 17, 2003.</footnote>
        <footnote id="F2">The stock option became exercisable in four equal annual installments beginning on April 29, 2000.</footnote>
        <footnote id="F3">The stock option became exercisable in four equal annual installments beginning on July 28, 1999.</footnote>
        <footnote id="F4">The stock option became exercisable in four equal annual installments beginning on February 11, 2004.</footnote>
        <footnote id="F5">The stock option became exercisable in four equal annual installments beginning on June 29, 1999.</footnote>
        <footnote id="F6">The stock option became exercisable in four equal annual installments beginning on January 21, 2000.</footnote>
        <footnote id="F7">The stock option became exercisable in four equal annual installments beginning on August 6, 2003.</footnote>
        <footnote id="F8">The stock option became exercisable in four equal annual installments beginning on April 15, 2004.</footnote>
        <footnote id="F9">The stock option became exercisable 25% on July 15, 2004, and then 1/48th per month for the following 36 months.</footnote>
        <footnote id="F10">The stock option became exercisable in four equal annual installments beginning on April 17, 2002.</footnote>
        <footnote id="F11">The stock option became exercisable in four equal annual installments beginning on June 19, 2002.</footnote>
        <footnote id="F12">The stock option became exercisable in four equal annual installments beginning on August 18, 2000.</footnote>
        <footnote id="F13">The stock option became exercisable in four equal annual installments beginning on April 16, 2003.</footnote>
        <footnote id="F14">The stock option becomes exercisable 25% on July 13, 2005 and then 1/48th per month for the following 36 months.</footnote>
        <footnote id="F15">The stock option became exercisable 25% on January 27, 2005 and then 1/48th per month for the following 36 months.</footnote>
        <footnote id="F16">The stock option became exercisable in four equal annual installments beginning on April 19, 2001.</footnote>
    </footnotes>

    <remarks>The nature of the indirect beneficial ownership shown in item 4 on Table 1 is shares allocated and held by the Profit Sharing Plan in the Company's Retirement and Savings Program.  As of June 13, 2005, based on unitized valuations provided by the Plan Trustee, 6,015.1832 shares allocated to Mr. Samath's account were fully vested. Shares are contributed to the Plan by the Company and are exempt under Rule 16b-3(c).  Share amounts will vary based on unitized values provided by the Plan Trustee.  The Company has ceased to make contributions of NSC stock to the Profit Sharing Plan.</remarks>

    <ownerSignature>
        <signatureName>By: Susan Schmidt, Attorney-in-Fact  For: Jamie Samath</signatureName>
        <signatureDate>2005-06-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----