Filed Pursuant to Rule 424(b)(3)
Registration No. 333-81434

PROSPECTUS SUPPLEMENT DATED MARCH 18, 2003
(To Prospectus filed on April 30, 2002)

LSI LOGIC CORPORATION

$490,000,000
(aggregate principal amount)

4.00% Convertible Subordinated Notes due 2006 and the
Common Stock Issuable Upon Conversion of the Notes

     This Prospectus Supplement, together with the Prospectus listed above, is to be used by certain holders of the above-referenced securities or by their transferees, pledgees, donees or their successors in connection with the offer and sale of the above referenced securities.

     The table captioned “Selling Securityholders” commencing on page 41 of the Prospectus is hereby amended to reflect the following additions and changes.

Principal Amount at

Maturity of Notes

Number of Shares of

Percentage of

Beneficially Owned

Percentage of Notes

Common Stock That

Common Stock

Name

That May Be Sold

Outstanding

May Be Sold(1)

Outstanding(2)

Salomon Brothers Asset Management, Inc.

$

8,430,000

1.7

%

320,057

*

Thomas Weisel Partners LLC

$

2,000,000

*

75,933

*

---

*		Less than 1%
(1)		Assumes conversion of all of the holder’s notes at a conversion price of $26.339 per share of common stock. However, this conversion price will be subject to adjustment as described under “Description of Notes-Conversion Rights.” As a result, the amount of common stock issuable upon conversion of the notes may increase or decrease in the future.
(2)		Calculated based on Rule 13d-3(d)(i) of the Exchange Act using 375,208,474 shares of common stock outstanding as of March 7, 2003. In calculating this amount, we treated as outstanding the number of shares of common stock issuable upon conversion of all of that particular holder’s notes. However, we did not assume the conversion of any other holder’s notes.