Mark L. Mallory of Cincinnati, Ohio, is an American politician of the Democratic party, who as of January 2005 (126th Ohio General Assembly) is the assistant minority leader in the Ohio Senate.

Mallory holds a bachelor of science degree in administrative management from the University of Cincinnati.

Mallory won a seat in the Ohio House of Representatives in 1994. He served in the Ohio House from 1995 to 1998, when he was was elected to the Senate. In the 125th General Assembly, Mallory also served as assistant leader of the Democratic caucus. Mallory successfully stood for re-election in 2002. His current term ends in January 2007. Ohio's term limits law will prevent him from running for a third consecutive term.