The 2023 Copa Sudamericana 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.
[4][5] Teams were seeded by their CONMEBOL Clubs ranking as of 9 December 2022 (shown in parentheses),[6] taking into account the following three factors:[7] For the group stage, the 32 teams were drawn into eight groups (Groups A–H) of four containing a team from each of the four pots.
The four losers of the Copa Libertadores third stage were seeded into Pot 4.
[3] The winners of each group advanced to the round of 16 of the final stages, whilst the runners-up of each group advanced to the knockout round play-offs of the final stages.