Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
NOONEN MICHAEL
   2. Issuer Name and Ticker or Trading Symbol
NATIONAL SEMICONDUCTOR CORP [NSM] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr. VP WW Marketing and Sales
(Last)
(First)
(Middle)
STOCK ADMINISTRATION, MAIL STOP C1-640, 2900 SEMICONDUCTOR DR.		 3. Date of Earliest Transaction (Month/Day/Year)
09/14/2005
(Street)

SANTA CLARA, CA 95051		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 09/14/2005   M   3,666 A $ 19.1 3,938.8063 D  
Common Stock 09/14/2005   S   3,666 D $ 26.6 272.8063 D  
Common Stock 09/14/2005   M   1,687 A $ 19.15 1,959.8063 D  
Common Stock 09/14/2005   S   1,687 D $ 26.6 272.8063 D  
Common Stock 09/14/2005   M   5,249 A $ 8.025 5,521.8063 D  
Common Stock 09/14/2005   S   5,249 D $ 26.6 272.8063 D  
Common Stock 09/14/2005   M   2,550 A $ 11.625 2,822.8063 D  
Common Stock 09/14/2005   S   2,550 D $ 26.6 272.8063 D  
Common Stock 09/14/2005   M   5,700 A $ 11.625 5,972.8063 D  
Common Stock 09/14/2005   S   5,700 D $ 26.59 272.8063 D  
Common Stock 09/14/2005   M   1,000 A $ 8.375 1,272.8063 D  
Common Stock 09/14/2005   S   1,000 D $ 26.59 272.8063 D  
Common Stock 09/14/2005   M   800 A $ 6.545 1,072.8063 D  
Common Stock 09/14/2005   S   800 D $ 26.59 272.8063 D  
Common Stock 09/14/2005   M   1,000 A $ 6.3 1,272.8063 D  
Common Stock 09/14/2005   S   1,000 D $ 26.59 272.8063 D  
Common Stock 09/14/2005   M   1,500 A $ 11.75 1,772.8063 D  
Common Stock 09/14/2005   S   1,500 D $ 26.59 272.8063 D  
Common Stock 09/14/2005   M   6,000 A $ 11.75 6,272.8063 D  
Common Stock 09/14/2005   S   6,000 D $ 26.57 272.8063 D  
Common Stock 09/14/2005   M   4,300 A $ 17.1 4,572.8063 D  
Common Stock 09/14/2005   S   4,300 D $ 26.57 272.8063 D  
Common Stock               92.3287 I by Trust.

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) $ 6.3 09/14/2005   M     1,000 10/17/2003(1) 10/17/2012 Common Stock 1,000 $ 0 10,000 D  
Non-Qualified Stock Option (right to buy) $ 6.545 09/14/2005   M     800 02/11/2004(2) 02/11/2013 Common Stock 800 $ 0 8,000 D  
Non-Qualified Stock Option (right to buy) $ 8.025 09/14/2005   M     5,249 08/06/2003(3) 08/06/2012 Common Stock 5,249 $ 0 4,375 D  
Non-Qualified Stock Option (right to buy) $ 8.375 09/14/2005   M     1,000 04/15/2004(4) 04/15/2013 Common Stock 1,000 $ 0 10,000 D  
Non-Qualified Stock Option (right to buy) $ 11.625 09/14/2005   M     2,550 07/15/2004(5) 07/15/2009 Common Stock 2,550 $ 0 34,450 D  
Non-Qualified Stock Option (right to buy) $ 11.625 09/14/2005   M     5,700 07/15/2004(5) 07/15/2009 Common Stock 5,700 $ 0 28,750 D  
Non-Qualified Stock Option (right to buy) $ 11.75 09/14/2005   M     1,500 09/24/2002(6) 09/24/2011 Common Stock 1,500 $ 0 43,500 D  
Non-Qualified Stock Option (right to buy) $ 11.75 09/14/2005   M     6,000 09/24/2002(6) 09/24/2011 Common Stock 6,000 $ 0 37,500 D  
Non-Qualified Stock Option (right to buy) $ 17.1 09/14/2005   M     4,300 04/16/2003(7) 04/16/2012 Common Stock 4,300 $ 0 17,500 D  
Non-Qualified Stock Option (right to buy) $ 19.1 09/14/2005   M     3,666 07/13/2005(8) 07/13/2010 Common Stock 3,666 $ 0 28,334 D  
Non-Qualified Stock Option (right to buy) $ 19.15 09/14/2005   M     1,687 01/27/2005(9) 01/27/2010 Common Stock 1,687 $ 0 9,063 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
NOONEN MICHAEL
STOCK ADMINISTRATION, MAIL STOP C1-640
2900 SEMICONDUCTOR DR.
SANTA CLARA, CA 95051		       Sr. VP WW Marketing and Sales  

Signatures

 By: Susan Schmidt, Attorney-in-Fact For: Michael E. Noonen   09/15/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The stock option became exercisable in four equal annual installments beginning on October 17, 2003.
(2) The stock option became exercisable in four equal annual installments beginning on February 11, 2004.
(3) The stock option became exercisable in four equal annual installments beginning on August 6, 2003.
(4) The stock option became exercisable in four equal annual installments beginning on April 15, 2004.
(5) The stock option became exercisable 25% on July 15, 2004, and then 1/48th per month for the following 36 months.
(6) The stock option became exercisable in four equal annual installments beginning on September 24, 2002.
(7) The stock option became exercisable in four equal annual installments beginning on April 16, 2003.
(8) The stock option became exercisable 25% on July 13, 2005 and then 1/48th per month for the following 36 months.
(9) The stock option became exercisable 25% on January 27, 2005 and then 1/48th per month for the following 36 months.
 
Remarks:
The nature of the indirect beneficial ownership shown in item 7 on Table 1 is shares held by the Company's Retirement and Savings Program. As of May 30, 2005, based on unitized valuations provided by the Plan Trustee, 92.3287 shares of NSC stock had been acquired under the NSC Stock Fund in the Company's Savings Plus 401(k) Plan of the Retirement and Savings Program for the benefit of Mr. Noonen.  These acquisitions are exempt as Discretionary Transactions under Rule 16b-3(f).

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