EXHIBIT 23.3



              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
              ___________________________________________________


We have issued our report dated January 13, 1995 accompanying the consolidated
financial statements of PV Financial and Subsidiary for the year ended December
31, 1994 appearing in the 1995 Westamerica Bancorporation Form 10-K which is
incorporated by reference in this Registration Statement and Joint Proxy
Statement/Prospectus.  We consent to the incorporation by reference in the
Registration Statement and the Joint Proxy Statement/Prospectus, and to the use
of our name as it appears under the caption "Experts".


/s/ Grant Thornton LLP

Stockton, California
December 4, 1996