The UEFA Champions League also known as the European Cup, is a seasonal club football competition organized by the Union of European Football Associations (UEFA) since 1955 for the most successful football clubs in Europe. The prize, the European Champion Clubs' Cup, is considered the most prestigious club trophy in the sport.

The UEFA Champions League is separate from the less prestigious UEFA Cup.

The tournament consists of several stages and begins with three preliminary knockout qualifying rounds. The sixteen teams emerging from the preliminary rounds take part in the final knock-out stage, which starts in late February and ends with the final match in May.

The most successful club of the UEFA Champions League is Spanish club Real Madrid, who have been champions of the UEFA Champions League for a total of 9 times.

The current holders of the UEFA Champions League trophy are AC Milan, who beat Liverpool F.C. 2-1 at the Olympic Stadium in Athens, Greece on 23 May 2007. AC Milan have won the title 7 times.

Moscow will host its first European Cup final for the 2007-08 season.

The 32 teams who are now competing in the Group stages of the 2007-08 season of the UEFA Champions League are:

Group A: Besiktas, Liverpool, Porto, Marseille
Group B: Chelsea, Rosenborg, Schalke, Valencia
Group C: Lazio, Olympiacos, Real Madrid, Werder Bremen
Group D: AC Milan, Benfica, Celtic FC, Shaktar Donetsk,
Group E: Barcelona, Lyon, Stuttgart, Rangers
Group F: AS Roma, Dynamo Kyiv, Manchester United, Sporting Lisbon
Group G: CSKA Moskva, Fenerbahce, Inter Milan, PSV Eindhoven
Group H: Arsenal, Sevilla, Slavia Praha, Steaua Bucharest

Oddsmakers are expecting these teams to win the 2007-08 UEFA Champions League Finals in Moscow on May 2008:

Barcelona: 5/1
Chelsea: 6/1
Manchester United: 7/1
Inter Milan: 8/1
AC Milan: 8/1
Real Madrid: 10/1
Liverpool: 10/1