| 3. Round | 13/08/1988 | 1. FSV Mainz 05 | - | Fortuna Köln | 2:2 | ||||
| 4. Round | 20/08/1988 | Fortuna Köln | - | SpVgg Bayreuth | 3:1 | ||||
| 11. Round | 01/10/1988 | Fortuna Düsseldorf | - | Fortuna Köln | 3:1 | ||||
| 12. Round | 08/10/1988 | Fortuna Köln | - | Alemannia Aachen | 4:0 | ||||
| 13. Round | 22/10/1988 | Eintracht Braunschweig | - | Fortuna Köln | 0:1 | ||||
| 14. Round | 29/10/1988 | Fortuna Köln | - | Rot-Weiss Essen | 3:0 | ||||
| 15. Round | 05/11/1988 | Viktoria Aschaffenburg | - | Fortuna Köln | 1:6 | ||||
| 16. Round | 12/11/1988 | Fortuna Köln | - | SV Darmstadt 98 | 3:0 | ||||
| 17. Round | 19/11/1988 | VfL Osnabrück | - | Fortuna Köln | 4:2 | ||||
| 19. Round | 14/02/1989 | Hertha BSC | - | Fortuna Köln | 3:0 | ||||
| 20. Round | 18/02/1989 | Fortuna Köln | - | FC 08 Homburg | 2:0 | ||||
| 21. Round | 25/02/1989 | SG Union Solingen | - | Fortuna Köln | 0:2 |  |
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| 22. Round | 04/03/1989 | Fortuna Köln | - | 1. FSV Mainz 05 | 3:0 |
Germany