EXHIBIT 23 INDEPENDENT ACCOUNTANTS' CONSENT The Board of Directors Washington Trust Bancorp, Inc.: We consent to incorporation by reference in the registration statements (Nos. 333-72277, 333-48315, 333-13167 and 33-23048) on Forms S-8, and in the registration statements (Nos. 333-13821, 33-28065 and 333-42502) on Forms S-3 of Washington Trust Bancorp, Inc. and subsidiary of our report dated January 14, 2003, relating to the consolidated balance sheets of Washington Trust Bancorp, Inc. and subsidiary as of December 31, 2002 and 2001, and the related consolidated statements of income, changes in shareholders' equity and cash flows for each of the years in the three-year period ended December 31, 2002, which report appears in the December 31, 2002 annual report on Form 10-K of Washington Trust Bancorp, Inc. KPMG LLP Providence, Rhode Island March 18, 2003