A total of 32 teams competed in the group stage to decide 8 of the 16 places in the knockout phase of the 2023–24 UEFA Europa Conference League.
All teams besides AZ, Ballkani, Bodø/Glimt, Fiorentina, Gent, HJK, Maccabi Tel Aviv, PAOK, Slovan Bratislava and Zorya Luhansk made their debut appearances in the group stage.
Breiðablik, Čukarički, KÍ, Olimpija Ljubljana and Zrinjski Mostar made their debut appearances in a UEFA competition group stage.
Breiðablik, KÍ and Zrinjski Mostar were the first teams from Iceland, the Faroe Islands and Bosnia and Herzegovina, respectively, to play in a UEFA competition group stage.
Breiðablik also became the first ever team to qualify for the group stages of a UEFA club competition after starting in a preliminary round.