2003–04 UEFA Champions League

2003–04 UEFA Champions League
Tournament details
DatesQualifying:
16 July – 27 August 2003
Competition proper:
16 September 2003 – 26 May 2004
TeamsCompetition proper: 32
Total: 72
Final positions
Champions Porto (2nd title)
Runners-up Monaco
Tournament statistics
Matches played125
Goals scored309 (2.47 per match)
Attendance4,540,677 (36,325 per match)
Top scorer(s)Fernando Morientes (Monaco)
9 goals

The 2003–04 UEFA Champions League was the 12th season of UEFA's premier European club football tournament, the UEFA Champions League, since its rebranding from the European Cup in 1992, and the 49th tournament overall. This was the first UEFA Champions League edition to feature a new format with a 16-team knockout round instead of a second group stage.

The competition was won by Portugal's Porto, who defeated Monaco of France 3–0 at the Arena AufSchalke in Gelsenkirchen, Germany. This was Portugal's first win since 1987, and Porto's second European trophy in two years, following their UEFA Cup success from the previous season. This was the second consecutive victory in a European cup for Porto coach José Mourinho, who beat Monaco coached by Didier Deschamps, a two-time winner of the competition as a player. As winners of the competition, Porto went on to represent UEFA in the 2004 Intercontinental Cup.

Milan were the defending champions, but were eliminated by Deportivo La Coruña in the quarter-finals.