This article details the 2011–12 UEFA Champions League group stage.
The group stage featured 32 teams: the 22 automatic qualifiers and the 10 winners of the play-off round (five through the Champions Route, five through the League Route).
The teams were drawn into eight groups of four, and played each other home-and-away in a round-robin format. The matchdays were 13–14 September, 27–28 September, 18–19 October, 1–2 November, 22–23 November, and 6–7 December 2011.
The top two teams in each group advanced to the first knockout round, while the third-placed teams dropped down to the Europa League round of 32.
The draw for the group stage was held at Grimaldi Forum, Monaco on 25 August 2011 at 17:45 CEST (UTC+02:00).
Teams were seeded into four pots based on their 2011 UEFA club coefficients. The title holders, Barcelona, were automatically seeded into Pot 1. Pot 1 held teams ranked 1–9, Pot 2 held teams ranked 10–24, Pot 3 held teams ranked 31–83, while Pot 4 held teams ranked 86–200 and unranked teams.
th Title Holder. The title holder automatically gets the top position of seeding list.
CR Qualified through Champions Route
LR Qualified through League Route
For the group stage draw, teams from the same national association cannot be drawn against each other. Moreover, the draw was controlled for teams from the same association in order to split the teams evenly into the two sets of groups (A–D, E–H) for maximum television coverage.