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                                                                     EXHIBIT 5.1



December 22, 1998


QUALCOMM INCORPORATED
6455 Lusk Boulevard
San Diego, CA  92121

Ladies and Gentlemen:

You have requested our opinion with respect to certain matters in connection
with the filing by QUALCOMM INCORPORATED, a Delaware corporation (the "Company")
of a Registration Statement on Form S-8 (the "Registration Statement") with the
Securities and Exchange Commission, covering the offering of an aggregate of up
to 7,670,000 shares of the Company's Common Stock, $.0001 par value (the
"Shares"), including 5,000,000 shares for issuance pursuant to the Company's
1991 Stock Option Plan (the "Option Plan"), 2,200,000 shares for issuance
pursuant to the 1991 Employee Stock Purchase Plan (the "Stock Plan") and 470,000
shares for issuance pursuant to the 1998 Non-Employee Directors' Stock Option
Plan (the "Director Plan"). The Option Plan, Stock Plan and Director Plan are
referred to collectively as the "Plans."

In connection with this opinion, we have examined and relied upon the
Registration Statement and related prospectus, the Plans, the Company's
Certificate of Incorporation and Bylaws, as amended, and the originals or copies
certified to our satisfaction of such records, documents, certificates,
memoranda and other instruments as in our judgment are necessary or appropriate
to enable us to render the opinion expressed below. We have assumed the
genuineness and authenticity of all documents submitted to us as originals, the
conformity to originals of all documents submitted to us as copies thereof and
the due execution and delivery of all documents where due execution and delivery
are a prerequisite to the effectiveness thereof.

On the basis of the foregoing, and in reliance thereon, we are of the opinion
that the Shares, when issued and sold in accordance with the applicable Plan,
the Registration Statement and related prospectus, will be validly issued, fully
paid and nonassessable.

We consent to the filing of this opinion as an exhibit to the Registration
Statement.

Very truly yours,

Cooley Godward LLP



Thomas A. Coll