The 2003 Mid-American Conference Baseball Tournament took place in May 2003. The top six regular season finishers met in the double-elimination tournament held at Gene Michael Field on the campus of Kent State University in Kent, Ohio. This was the fifteenth Mid-American Conference postseason tournament to determine a champion. Fourth seed Eastern Michigan won their third tournament championship, and first since the event resumed in 1992, to earn the conference's automatic bid to the 2003 NCAA Division I Baseball Tournament.