The 2004 CCHA Men's Ice Hockey Tournament was the 33rd CCHA Men's Ice Hockey Tournament in conference history. It was played between March 12 and March 20, 2004. First round games were played at campus sites, while all 'super six' games were played at Joe Louis Arena in Detroit, Michigan. By winning the tournament, Ohio State won the Mason Cup and received the Central Collegiate Hockey Association's automatic bid to the 2004 NCAA Division I Men's Ice Hockey Tournament.