The 2004 Conference USA Men's Basketball Tournament was held March 10–13 at the U.S. Bank Arena in Cincinnati, Ohio. Hosts Cincinnati defeated top-seeded DePaul in the championship game, 55–50, to clinch their fourth Conference USA men's tournament championship. The Bearcats, in turn, received an automatic bid to the 2004 NCAA Tournament. They were joined in the tournament by fellow C-USA members UAB, Charlotte, DePaul, and Memphis, all of whom earned at-large bids.