EXHIBIT 32.1


The following certification  accompanies North Bay Bancorp's Quarterly Report on
Form 10-Q and is not filed as provided in SEC Release Nos. 33-8212, 34-47551 and
IC 25967, dated March 21, 2003.


                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350


In connection with the  accompanying  Quarterly Report on Form 10-Q of North Bay
Bancorp for the quarter ended June 30, 2005, I, Terry L. Robinson, President and
Chief  Executive  Officer of North Bay Bancorp,  hereby  certify  pursuant to 18
U.S.C.  Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley
Act of 2002 that:


(1) such  Quarterly  Report on Form 10-Q of North Bay  Bancorp  for the  quarter
ended June 30, 2005,  fully complies with the  requirements  of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and


(2) the information contained in such Quarterly Report on Form 10-Q of North Bay
Bancorp for the quarter ended June 30, 2005,  fairly  presents,  in all material
respects,  the  financial  condition  and  results  of  operations  of North Bay
Bancorp.


Dated:    August 11, 2005           /s/ Terry L. Robinson
                                    ---------------------------------------
                                    Terry L. Robinson
                                    President and Chief Financial Officer
                                    (Principal Executive Officer)