SECTION 906 CERTIFICATION

Pursuant to 18 U.S.C.ss. 1350, the undersigned officers of Federated Short-Term
Municipal Trust (the "Registrant"), hereby certify, to the best of our
knowledge, that the Registrant's Report on Form N-CSR for the period ended
December 31, 2005 (the "Report") fully complies with the requirements of
Section 13(a) or 15(d), as applicable, of the Securities and Exchange Act of
1934 and that the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Registrant.


Dated: February 22, 2006

/s/ John B. Fisher
John B. Fisher
Title: President, Principal Executive Officer



Dated: February 23, 2006

/s/ Richard A. Novak
Richard A. Novak
Title: Treasurer, Principal Financial Officer

This certification is being furnished solely pursuant to 18 U.S.C.ss. 1350 and
is not being filed as part of the Report or as a separate disclosure document.