| 10. Round | 25/10/2003 | KSK Beveren | - | Excelsior Mouscron | 0:3 | ||||
| 11. Round | 31/10/2003 | Excelsior Mouscron | - | RSC Anderlecht | 0:1 | ||||
| 12. Round | 08/11/2003 | KVC Westerlo | - | Excelsior Mouscron | 1:1 | ||||
| 14. Round | 30/11/2003 | Club Brugge KV | - | Excelsior Mouscron | 4:2 | ||||
| 15. Round | 06/12/2003 | Excelsior Mouscron | - | Sporting Charleroi | 3:0 | ||||
| 16. Round | 13/12/2003 | Germinal Beerschot | - | Excelsior Mouscron | 2:2 | ||||
| 17. Round | 20/12/2003 | Excelsior Mouscron | - | Sporting Lokeren | 3:0 | ||||
| 19. Round | 24/01/2004 | Excelsior Mouscron | - | RAEC Mons | 3:2 | ||||
| 25. Round | 06/03/2004 | Excelsior Mouscron | - | KAA Gent | 2:1 | ||||
| 27. Round | 21/03/2004 | Excelsior Mouscron | - | KSK Beveren | 5:0 | ||||
| 24. Round | 24/03/2004 | Royal Antwerp FC | - | Excelsior Mouscron | 3:1 | ||||
| 28. Round | 03/04/2004 | RSC Anderlecht | - | Excelsior Mouscron | 0:0 | ||||
| 29. Round | 11/04/2004 | Excelsior Mouscron | - | KVC Westerlo | 3:2 | ||||
| 30. Round | 18/04/2004 | Koninklijke Heusden-Zolder SK | - | Excelsior Mouscron | 1:1 | ||||
| 31. Round | 23/04/2004 | Excelsior Mouscron | - | Club Brugge KV | 1:1 | ||||
| 32. Round | 01/05/2004 | Sporting Charleroi | - | Excelsior Mouscron | 1:0 |
Belgium