| Tournament details | |
|---|---|
| Dates |
13 August – 27 November 2002 (Qualifying rounds) 9 March – 11 October 2003 (Group & Final stages) |
| Teams | 16 (Group stage) |
| Final positions | |
| Champions |
|
| Runners-up |
|
| Tournament statistics | |
| Matches played | 30 |
| Goals scored | 104 (3.47 per match) |
| Top scorer(s) |
(9 goals) |
| Best player |
|
The 2002-03 AFC Champions League was the 22nd edition of the top-level Asian club football tournament and the 1st edition under the current AFC Champions League title. Al-Ain of the United Arab Emirates beat BEC Tero Sasana of Thailand 2–1 on aggregate.