<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>4
<FILENAME>dex23.txt
<DESCRIPTION>CONSENT OF SR SNODGRASS
<TEXT>
<PAGE>

                                                                      Exhibit 23

                         CONSENT OF INDEPENDENT AUDITORS

We consent to the incorporation by reference in this Registration Statement of
Middlefield Banc Corp. on Form S-8 of our report dated January 17, 2003
appearing in the Annual Report on Form 10K of Middlefield Banc Corp. for the
year ended December 31, 2002.


                                                        /s/ S.R.Snodgrass, A.C.
                                                        ------------------------
                                                        S.R. Snodgrass, A.C.

     Wexford, Pennsylvania
     March 26, 2003

</TEXT>
</DOCUMENT>