2017–18 UEFA Champions League group stage

The 2017–18 UEFA Champions League group stage began on 12 September and ended on 6 December 2017. A total of 32 teams competed in the group stage to decide the 16 places in the knockout phase of the 2017–18 UEFA Champions League.
Teams.
Below were the participating teams (with their 2017 UEFA club coefficients), grouped by their seeding pot. They included 22 teams which enter in this stage, and the 10 winners of the play-off round (5 in Champions Route, 5 in League Route).
Format.
In each group, teams played against each other home-and-away in a round-robin format. The group winners and runners-up advanced to the round of 16, while the third-placed teams entered the Europa League round of 32.
Tiebreakers.
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Teams were ranked according to points (3 points for a win, 1 point for a draw, 0 points for a loss), and if tied on points, the following tiebreaking criteria were applied, in the order given, to determine the rankings (Regulations Articles 17.01):
Groups.
The matchdays were 12–13 September, 26–27 September, 17–18 October, 31 October – 1 November, 21–22 November, and 5–6 December 2017. The match kickoff times were 20:45 CEST/CET in general, except for certain matches for geographical reasons.
Times are CET/CEST, as listed by UEFA (local times are in parentheses).