| 1. Round | 07/08/1998 | Galatasaray | - | Altay Izmir | 3:1 | ||||
| 2. Round | 15/08/1998 | Bursaspor | - | Galatasaray | 0:5 | ||||
| 3. Round | 21/08/1998 | Galatasaray | - | Kocaelispor | 3:1 |  |
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| 4. Round | 29/08/1998 | İstanbulspor AŞ | - | Galatasaray | 1:4 | |
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| 6. Round | 19/09/1998 | Fenerbahçe | - | Galatasaray | 2:2 | |
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| 8. Round | 16/10/1998 | Adanaspor | - | Galatasaray | 2:2 | ||||
| 9. Round | 23/10/1998 | Galatasaray | - | Samsunspor | 3:1 | ||||
| 10. Round | 30/10/1998 | Karabükspor | - | Galatasaray | 0:3 | ||||
| 13. Round | 20/11/1998 | Sakaryaspor | - | Galatasaray | 0:0 | ||||
| 16. Round | 11/12/1998 | Galatasaray | - | Antalyaspor | 3:1 | ||||
| 14. Round | 15/12/1998 | Galatasaray | - | Beşiktaş | 2:0 | |
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| 17. Round | 19/12/1998 | Gaziantepspor | - | Galatasaray | 1:2 | |
Romania