The 2005 Conference USA Baseball Tournament was the 2005 postseason college baseball championship of the NCAA Division I Conference USA, held at Pete Taylor Park in Hattiesburg, Mississippi from May 25 through May 29, 2005. Both TCU and Tulane were declared co-champions due to inclement weather but Tulane was given the automatic bid to the 2005 NCAA Division I Baseball Tournament. The tournament consisted of eight teams, with two double-elimination brackets, and a single-game final that was cancelled due to inclement weather.