The 2004 CCHA Men's Ice Hockey Tournament was the 33rd CCHA Men's Ice Hockey Tournament in conference history.
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.
All six victors in the first round advance as the newly minted 'Super Six' and play only single-elimination for the duration of the tournament.
The top two ranked winners receive byes into the semifinals while the four other teams play in the quarterfinals to determine the other qualifiers.
Note: GP = Games played; W = Wins; L = Losses; T = Ties; PTS = Points; GF = Goals For; GA = Goals Against Teams are reseeded after the first round and quarterfinals Note: * denotes overtime period(s)