The 2023 Copa Libertadores group stage was played from 4 April to 29 June 2023.
[3] The draw for the group stage was held on 27 March 2023, 20:00 PYT (UTC−4), at the CONMEBOL Convention Centre in Luque, Paraguay.
The defending champions Flamengo were directly assigned as the top seed of Group A (position A1).
[3] The winners and runners-up of each group advanced to the round of 16 of the final stages.
The third-placed teams of each group entered the knockout round play-offs of the 2023 Copa Sudamericana.