| Date | Home | Away | Group | Result |
|---|---|---|---|---|
| 11/9/23 9:30 AM | FK Astana | KF Ballkani Suhareka | Group C | 0-0 |
| 11/9/23 11:45 AM | FK Čukarički | Fiorentina | Group F | 0-1 |
| 11/9/23 11:45 AM | Ferencvaros Budapest | KRC Genk | Group F | 1-1 |
| 11/9/23 11:45 AM | FC Nordsjaelland | Spartak Trnava | Group H | 1-1 |
| 11/9/23 11:45 AM | HJK Helsinki | Eintracht Frankfurt | Group G | 0-1 |
| 11/9/23 11:45 AM | PAOK Saloniki | FC Aberdeen | Group G | 2-2 |
| 11/9/23 11:45 AM | Legia Warschau | HŠK Zrinjski Mostar | Group E | 2-0 |
| 11/9/23 11:45 AM | Besiktas Istanbul | FK Bodö/Glimt | Group D | 1-2 |
| 11/9/23 11:45 AM | Viktoria Plzen | Dinamo Zagreb | Group C | 1-0 |
| 11/9/23 2:00 PM | PFC Ludogorets Razgrad | Fenerbahce Istanbul | Group H | 2-0 |
| 11/9/23 2:00 PM | Aston Villa | AZ Alkmaar | Group E | 2-1 |
| 11/9/23 2:00 PM | Club Brugge | FC Lugano | Group D | 2-0 |
| 11/9/23 2:00 PM | FC Zorya Lugansk | Maccabi Tel Aviv | Group B | 1-3 |
| 11/9/23 2:00 PM | Breidablik Kopavogur | KAA Gent | Group B | 2-3 |
| 11/9/23 2:00 PM | Olimpija Ljubljana | KÍ Klaksvík | Group A | 2-0 |
| 11/9/23 2:00 PM | SK Slovan Bratislava | OSC Lille | Group A | 1-1 |