| 1. Round | 29/07/2023 | KAS Eupen | - | KVC Westerlo | 2:2 | ||||
| 10. Round | 08/10/2023 | Royal Antwerp FC | - | KAS Eupen | 4:1 | ||||
| 11. Round | 20/10/2023 | Union Saint-Gilloise | - | KAS Eupen | 4:1 |  |
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| 12. Round | 28/10/2023 | KAS Eupen | - | Sporting Charleroi | 2:0 |  |
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| 13. Round | 03/11/2023 | Sint-Truidense VV | - | KAS Eupen | 1:1 | ||||
| 14. Round | 11/11/2023 | KAS Eupen | - | RWD Molenbeek | 1:3 | |
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| 15. Round | 25/11/2023 | Cercle Brugge | - | KAS Eupen | 2:0 | |
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| 16. Round | 02/12/2023 | KAS Eupen | - | KV Kortrijk | 1:1 | ||||
| 17. Round | 10/12/2023 | KAS Eupen | - | KRC Genk | 1:3 | ||||
| 18. Round | 15/12/2023 | KVC Westerlo | - | KAS Eupen | 2:0 | ||||
| 19. Round | 23/12/2023 | KAS Eupen | - | Union Saint-Gilloise | 1:2 | ||||
| 20. Round | 26/12/2023 | Oud-Heverlee Leuven | - | KAS Eupen | 3:0 | ||||
| 21. Round | 24/01/2024 | RWD Molenbeek | - | KAS Eupen | 0:1 | |
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| 22. Round | 28/01/2024 | KAS Eupen | - | Royal Antwerp FC | 1:0 | ||||
| 23. Round | 31/01/2024 | Sporting Charleroi | - | KAS Eupen | 1:0 | ||||
| 24. Round | 04/02/2024 | KAS Eupen | - | KV Mechelen | 0:1 | ||||
| 25. Round | 10/02/2024 | Club Brugge KV | - | KAS Eupen | 4:0 | ||||
| 26. Round | 18/02/2024 | KAS Eupen | - | KAA Gent | 0:2 | ||||
| 30. Round | 16/03/2024 | Standard Liège | - | KAS Eupen | 4:0 |
Germany