| 1. Round | 22/08/1998 | Lierse SK (old) | - | KAA Gent | 1:2 | ||||
| 2. Round | 29/08/1998 | KAA Gent | - | KV Oostende | 1:1 | ||||
| 3. Round | 02/09/1998 | Standard Liège | - | KAA Gent | 2:0 |  |
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| 4. Round | 05/09/1998 | KAA Gent | - | K.S.C. Eendracht Aalst | 2:2 | ||||
| 6. Round | 13/09/1998 | KV Kortrijk | - | KAA Gent | 3:4 | ||||
| 7. Round | 19/09/1998 | KAA Gent | - | RSC Charleroi | 1:1 | ||||
| 8. Round | 26/09/1998 | KSK Beveren | - | KAA Gent | 0:3 | ||||
| 13. Round | 07/11/1998 | KAA Gent | - | Sint-Truidense VV | 1:1 | ||||
| 14. Round | 14/11/1998 | Lommelse SK | - | KAA Gent | 0:1 | ||||
| 15. Round | 21/11/1998 | KAA Gent | - | RSC Anderlecht | 3:2 | ||||
| 16. Round | 29/11/1998 | KRC Harelbeke | - | KAA Gent | 2:2 | ||||
| 17. Round | 05/12/1998 | KAA Gent | - | Sporting Lokeren | 2:1 | ||||
| 18. Round | 12/12/1998 | KAA Gent | - | Lierse SK (old) | 1:0 | |
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| 19. Round | 19/12/1998 | KV Oostende | - | KAA Gent | 2:2 | ||||
| 20. Round | 16/01/1999 | KAA Gent | - | Standard Liège | 3:2 | ||||
| 21. Round | 24/01/1999 | K.S.C. Eendracht Aalst | - | KAA Gent | 0:2 | ||||
| 27. Round | 20/03/1999 | KAA Gent | - | KVC Westerlo | 2:0 | |
Belgium