The 2023–24 UEFA Europa League group stage began on 21 September 2023 and ended on 14 December 2023.
A total of 32 teams competed in the group stage to decide 16 of the 24 places in the knockout phase of the 2023–24 UEFA Europa League.
Aris Limassol, Brighton & Hove Albion, BK Häcken, Raków Częstochowa, Servette and TSC made their debut appearances in the group stage.
All six clubs also made their debut appearances in a UEFA competition group stage.
If two or more teams were tied on points, the following tiebreaking criteria were applied, in the order given, to determine the rankings (see Article 16 Equality of points – group stage, Regulations of the UEFA Europa League):[4] The fixtures were announced on 2 September 2023, the day after the draw.