EXHIBIT 23

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


    We consent to the incorporation by reference in this Annual Report (Form
10-K) of Lam Research Corporation of our report dated July 29, 1996, included in
the 1996 Annual Report to Stockholders of Lam Research Corporation.

    Our audits also included the financial statement schedule of Lam Research
Corporation listed in Item 14(a). This schedule is the responsibility of the
Company's management. Our responsibility is to express an opinion based on our
audits. In our opinion, the financial statement schedule referred to above,
when considered in relation to the basic financial statements taken as a whole,
present fairly in all material respects the information set forth therein.
    
    We also consent to incorporation by reference in the Registration
Statements (Form S-8 Nos. 33-32166, Amendment No. 1, and 33-43857) of our report
dated July 29, 1996, with respect to the consolidated financial statements
incorporated herein by reference, and our report included in the preceding
paragraph with respect to the financial statement schedules included in this
Annual Report (Form 10-K) of Lam Research Corporation.

                                                            Ernst & Young LLP

San Jose, California
September 18, 1996



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