The 2007–08 UEFA Champions League group stage matches took place between 18 September and 12 December 2007.
Clubs from the same association were paired up to split the matchdays between Tuesday and Wednesday.
For the nations with three or four clubs in the group stage, the following clubs were paired (so that the clubs from the same pair would play on different days): Milan and Internazionale, Roma and Lazio, Barcelona and Real Madrid, Valencia and Sevilla, Arsenal and Chelsea, Liverpool and Manchester United, Benfica and Sporting CP, Werder Bremen and VfB Stuttgart.
Additionally, winner of the qualifier between Sevilla and AEK Athens was paired with Olympiacos.
[3] Based on paragraph 6.05 in the regulations for the current season, if two or more teams are equal on points on completion of the group matches, the following criteria are applied to determine the rankings:[4] Times are CET/CEST,[note 1] as listed by UEFA (local times, if different, are in parentheses).