| Date | Home | Away | Group | Result |
|---|---|---|---|---|
| 24/10/23 17:45 | Inter Milan | FC Red Bull Salzburg | Group D | 2-1 |
| 24/10/23 17:45 | Galatasaray Istanbul | FC Bayern Munich | Group A | 1-3 |
| 24/10/23 20:00 | Benfica Lisbon | Real Sociedad | Group D | 0-1 |
| 24/10/23 20:00 | 1. FC Union Berlin | SSC Napoli | Group C | 0-1 |
| 24/10/23 20:00 | Sporting Braga | Real Madrid | Group C | 1-2 |
| 24/10/23 20:00 | RC Lens | PSV Eindhoven | Group B | 1-1 |
| 24/10/23 20:00 | FC Sevilla | Arsenal FC | Group B | 1-2 |
| 24/10/23 20:00 | Manchester United | FC Copenhagen | Group A | 1-0 |
| 25/10/23 17:45 | FC Barcelona | Schachtjor Donezk | Group H | 2-1 |
| 25/10/23 17:45 | Feyenoord Rotterdam | Lazio Rom | Group E | 3-1 |
| 25/10/23 20:00 | Royal Antwerp FC | FC Porto | Group H | 1-4 |
| 25/10/23 20:00 | RB Leipzig | Red Star Belgrad | Group G | 3-1 |
| 25/10/23 20:00 | Young Boys Bern | Manchester City | Group G | 1-3 |
| 25/10/23 20:00 | Paris St. Germain | AC Milan | Group F | 3-0 |
| 25/10/23 20:00 | Newcastle United | Borussia Dortmund | Group F | 0-1 |
| 25/10/23 20:00 | Celtic Glasgow | Atletico Madrid | Group E | 2-2 |