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PROSPECTUS SUPPLEMENT                           FILED PURSUANT TO RULE 424(b)(3)
TO PROSPECTUS DATED MAY 6, 1998                       REGISTRATION NO. 333-51897

                                  $885,500,000

                            NETWORKS ASSOCIATES, INC.
            ZERO COUPON CONVERTIBLE SUBORDINATED DEBENTURES DUE 2018

        This Prospectus Supplement relates to the resale by the holders (the
"Selling Securityholders") of Zero Coupon Convertible Subordinated Debentures
due 2018 (the "Debentures") of Networks Associates, Inc. (the "Company") and the
shares of Common Stock, par value of $.001 per share (the "Common Stock"), of
the Company issuable upon the conversion thereof (the "Conversion Shares").

        This Prospectus Supplement should be read in conjunction with the
Prospectus dated May 6, 1998, which is to be delivered with this Prospectus
Supplement. All capitalized terms used herein but not defined in the Prospectus
Supplement shall have the meanings given them in the Prospectus.

        The table below sets forth information as of the date hereof concerning
beneficial ownership of the Debentures of the Selling Securityholders therein
listed. All information concerning beneficial ownership has been furnished by
the Selling Securityholders.




                             Principal Amount    Percentage of          Number of            Percentage of
                                 of Notes            Notes           Conversion Shares       Common Stock
          Name              That May Be Sold      Outstanding       That May Be Sold(1)      Outstanding(2)
         ------             -----------------    -------------     ---------------------    ----------------
                                                                                
Argent Classic Convertible    $10,000,000             1.1%               56,920                  *
Arbitrage Fund (Bermuda)
L.P.

Chrysler Corporation          $ 8,625,000               *                49,093                  *
Master Retirement Trust

Delta Air Lines Master        $ 6,000,000               *                34,152                  *
Trust

Strong Total Return Fund,     $ 7,500,000               *                42,690                  *
Inc.

New York Life Insurance       $28,000,000             3.1%              159,376                  *
Company

New York Life Insurance &     $ 8,500,000               *                48,382                  *
Annuity Corporation

OCM Convertible Trust         $12,575,000             1.4%               71,576                  *

Partner Reinsurance           $   895,000               *                 5,094                  *
Company

Raytheon Company Master       $ 4,315,000               *                24,560                  *
Pension Trust

SBC Warburg Dillon Read       $ 7,000,000               *                39,844                  *
Inc.



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                             Principal Amount    Percentage of          Number of             Percentage of
                                 of Notes            Notes           Conversion Shares        Common Stock
          Name              That May Be Sold      Outstanding       That May Be Sold(1)      Outstanding(2)
         ------             -----------------    -------------     ---------------------    ----------------
                                                                                
State Employees               $ 3,015,000               *                 17,161                 *
Retirement Plan of the
State of Delaware

State of Connecticut          $10,810,000             1.2%                61,530                 *
Combined Investment
Funds

Swiss Bank Corporation-       $20,000,000             2.2%               113,840                 *
London Branch

TQA Leverage Fund, L.P.       $ 1,500,000               *                  8,538                 *

TQA Vantage Fund, Ltd.        $ 6,000,000               *                 34,152                 *

TQA Vantage Plus Fund,        $   750,000               *                  4,269                 *
Ltd.

Vanguard Convertible          $ 7,765,000               *                 44,198                 *
Securities Fund, Inc.


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*       Less than 1%

(1)     Assumes conversion of the full amount of Debentures held by such holder
        at the initial conversion rate of 5.692 shares of Common Stock per $1000
        principal amount of Debentures; such conversion rate is subject to
        adjustment as described under "Description of Debentures -- Conversion
        of Debentures." Accordingly, the number of shares of Common Stock
        issuable upon conversion of the Notes may increase or decrease from time
        to time. Under the terms of the Indenture, fractional shares will not be
        issued upon conversion of the Notes; cash will be paid in lieu of
        fractional shares, if any.

(2)     Computed in accordance with Rule 13d-3(d)(i) promulgated under the
        Exchange Act and based upon 71,718,576 shares of Common Stock
        outstanding as of March 31, 1998, treating as outstanding the number of
        Conversion Shares shown as being issuable upon the assumed conversion by
        the named holder of the full amount of such holder's Debentures but not
        assuming the conversion of the Debentures of any other holder.

                                  ------------

        FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED IN
CONNECTION WITH AN INVESTMENT IN THE SECURITIES OFFERED HEREBY, SEE "RISK
FACTORS" BEGINNING ON PAGE 7 OF THE PROSPECTUS.

                                  ------------

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
            SECURITIES AND EXCHANGE COMMISSION NOR HAS THE SECURITIES
             AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMIS-
                SION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                 PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.

                                  ------------

             The date of this Prospectus Supplement is May 15, 1998.