1. Round 07/08/1998 Trabzonspor - Gaziantepspor 0:1
2. Round 15/08/1998 Gaziantepspor - Sakaryaspor 2:0
3. Round 22/08/1998 Beşiktaş - Gaziantepspor 1:1
4. Round 29/08/1998 Gaziantepspor - MKE Ankaragücü 1:0
5. Round 12/09/1998 Antalyaspor - Gaziantepspor 3:1
6. Round 19/09/1998 Gaziantepspor - Dardanelspor 1:0
7. Round 26/09/1998 Gaziantepspor - Altay Izmir 1:1
8. Round 17/10/1998 Bursaspor - Gaziantepspor 2:1
9. Round 24/10/1998 Gaziantepspor - Kocaelispor 1:2
10. Round 30/10/1998 İstanbulspor AŞ - Gaziantepspor 0:0
11. Round 07/11/1998 Gaziantepspor - Erzurumspor (1968-2015) 3:0
12. Round 13/11/1998 Fenerbahçe - Gaziantepspor 4:0
13. Round 21/11/1998 Gaziantepspor - Gençlerbirliği 2:2
14. Round 26/11/1998 Adanaspor - Gaziantepspor 3:1
15. Round 05/12/1998 Gaziantepspor - Samsunspor 1:1
16. Round 12/12/1998 Karabükspor - Gaziantepspor 2:6
17. Round 19/12/1998 Gaziantepspor - Galatasaray 1:2
18. Round 30/01/1999 Gaziantepspor - Trabzonspor 1:1
19. Round 06/02/1999 Sakaryaspor - Gaziantepspor 6:2
20. Round 12/02/1999 Gaziantepspor - Beşiktaş 2:0 yellow card
21. Round 20/02/1999 MKE Ankaragücü - Gaziantepspor 1:1
22. Round 27/02/1999 Gaziantepspor - Antalyaspor 1:1
23. Round 05/03/1999 Dardanelspor - Gaziantepspor 0:1
24. Round 13/03/1999 Altay Izmir - Gaziantepspor 0:0
25. Round 19/03/1999 Gaziantepspor - Bursaspor 5:2
31. Round 09/05/1999 Gaziantepspor - Adanaspor 3:1
32. Round 15/05/1999 Samsunspor - Gaziantepspor 2:1
33. Round 21/05/1999 Gaziantepspor - Karabükspor 4:2
34. Round 30/05/1999 Galatasaray - Gaziantepspor 0:0