Exhibit 32.1


                  Certification of Principal Executive Officer
                 (Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Quarterly  Report of Carrollton  Bancorp on Form 10-Q for
the period ended  September 30, 2008 as filed with the  Securities  and Exchange
Commission  on the date hereof,  I, Robert A.  Altieri,  as President  and Chief
Executive Officer of Carrollton Bancorp,  hereby certify,  pursuant to 18 U.S.C.
section 1350, as adopted  pursuant to section 906 of the  Sarbanes-Oxley  Act of
2002, to the best of my knowledge and belief, that:

     (1)  such Form 10-Q for the period ended  September 30, 2008 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  Form 10-Q for the  period  ended
          September  30, 2008 fairly  presents,  in all material  respects,  the
          financial condition and results of operations of Carrollton Bancorp.


Date: November 10, 2008

/s/Robert A. Altieri
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Robert A. Altieri
President and Chief Executive Officer