| Tournament details | |
|---|---|
| Dates | 10 February – 1 December 2004 |
| Teams | 26 |
| Final positions | |
| Champions |  Al-Ittihad (1st title) |
| Runners-up |  Seongnam Ilhwa Chunma |
| Tournament statistics | |
| Matches played | 80 |
| Goals scored | 252 (3.15 per match) |
| Top scorer(s) | Kim Do-hoon (9 goals) |
| Best player(s) | Redha Tukar |
The 2004 AFC Champions League was the 23rd edition of the top-level Asian club football tournament and the 2nd edition under the current AFC Champions League title. The title was won by Al-Ittihad over Seongnam Ilhwa Chunma.