EXHIBIT 32.1

                                Certification of
                            American River Bankshares
            pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
          regarding Quarterly Report on Form 10-Q for the quarter ended
                               September 30, 2005


         Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections
(a) and (b) of section 1350, chapter 63 of title 18, United States Code), each
of the undersigned officers of American River Bankshares, a California
corporation (the "Company"), does hereby certify that:

         1.       The Company's Quarterly Report on Form 10-Q for the quarter
                  ended September 30, 2005 (the "Form 10-Q") fully complies with
                  the requirements of Section 13(a) or 15(d) of the Securities
                  Exchange Act of 1934, as amended; and

         2.       Information contained in the Form 10-Q fairly presents, in all
                  material respects, the financial condition and results of
                  operations of the Company.


Dated:  November 10, 2005              By: /s/ DAVID T. TABER
                                           -------------------------------------
                                           David T. Taber
                                           President and Chief Executive Officer


Dated:  November 10, 2005              By: /s/ MITCHELL A. DERENZO
                                           -------------------------------------
                                           Mitchell A. Derenzo
                                           Executive Vice President and
                                           Chief Financial Officer



         A signed original of this written statement required by Section 906 has
been provided to American River Bankshares and will be retained by American
River Bankshares and furnished to the Securities and Exchange Commission or its
staff upon request.


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