| Year: | 2004 |
| Conference: | CCHA |
| Gender: | Men's |
| Dates: | March 12–20, 2004 |
| Teams: | 12 |
| Finalarena: | Joe Louis Arena |
| Finalcity: | Detroit, Michigan |
| Champions: | Ohio State |
| Titlecount: | 2nd |
| Coach: | John Markell[1] |
| Coachcount: | 1st |
| Mvp: | Paul Caponigri |
| Mvpteam: | Ohio State |
| Prevseason Year: | 2003 |
| Prevseason Link: | 2003 CCHA Men's Ice Hockey Tournament |
| Nextseason Year: | 2005 |
| Nextseason Link: | 2005 CCHA Men's Ice Hockey Tournament |
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.
The tournament featured four rounds of play. In the First Round, the first and twelfth seeds, the second and eleventh seeds, the third and tenth seeds, the fourth and ninth seeds, the fifth and eighth seeds and the sixth and seventh seeds played a best-of-three series. 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. In the semifinals, the remaining highest and lowest seeds and second highest and second lowest seeds play a single-game, with the winners advancing to the finals. The tournament champion receives an automatic bid to the 2004 NCAA Men's Division I Ice Hockey Tournament.
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)