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  September  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 September 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 September 30, 2005,  fairly presents,  in
     all material respects, the financial condition and results of operations of
     North Bay Bancorp.


Dated:    November 14 , 2005


                                          /s/ Terry L. Robinson
                                         -------------------------------------
                                         TERRY L. ROBINSON
                                         President and Chief Executive Officer
                                         Principal Executive Officer


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