| 1. Round | 22/08/1998 | Aris Saloniki | - | Ethnikos Asteras | 2:0 |  |
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| 2. Round | 29/08/1998 | Ethnikos Asteras | - | AO Kavala | 3:2 | ||||
| 3. Round | 12/09/1998 | Panathinaikos | - | Ethnikos Asteras | 4:1 | ||||
| 4. Round | 19/09/1998 | Ethnikos Asteras | - | Ethnikos Piraeus | 1:0 | ||||
| 5. Round | 26/09/1998 | Iraklis Saloniki | - | Ethnikos Asteras | 1:1 |  |
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| 7. Round | 24/10/1998 | Ethnikos Asteras | - | Olympiakos Piraeus | 1:3 | ||||
| 8. Round | 31/10/1998 | AEK Athen | - | Ethnikos Asteras | 3:1 | ||||
| 9. Round | 07/11/1998 | Ethnikos Asteras | - | Apollon Smyrnis | 5:1 | ||||
| 10. Round | 21/11/1998 | Panelefsiniakos Elefsinas | - | Ethnikos Asteras | 1:2 | ||||
| 12. Round | 05/12/1998 | OFI Heraklion | - | Ethnikos Asteras | 1:1 | ||||
| 14. Round | 19/12/1998 | AO Proodeftiki | - | Ethnikos Asteras | 3:0 | ||||
| 21. Round | 27/02/1999 | Ethnikos Piraeus | - | Ethnikos Asteras | 1:2 | ||||
| 23. Round | 13/03/1999 | Skoda Xanthi | - | Ethnikos Asteras | 0:1 | ||||
| 30. Round | 11/05/1999 | Paniliakos Pyrgos | - | Ethnikos Asteras | 1:0 | ||||
| 31. Round | 15/05/1999 | Ethnikos Asteras | - | AO Proodeftiki | 2:2 | |
Greece