| 1. Round | 26/08/2012 | Veria FC | - | Olympiakos Piraeus | 1:2 | ||||
| 2. Round | 02/09/2012 | Olympiakos Piraeus | - | Levadiakos | 4:0 | ||||
| 3. Round | 15/09/2012 | PAS Giannina | - | Olympiakos Piraeus | 1:2 | ||||
| 4. Round | 23/09/2012 | Olympiakos Piraeus | - | Panthrakikos | 4:1 | ||||
| 5. Round | 29/09/2012 | Atromitos | - | Olympiakos Piraeus | 0:1 | ||||
| 6. Round | 07/10/2012 | Olympiakos Piraeus | - | Asteras Tripolis | 1:0 | ||||
| 7. Round | 20/10/2012 | Olympiakos Piraeus | - | Skoda Xanthi | 4:0 | ||||
| 8. Round | 29/10/2012 | Aris Saloniki | - | Olympiakos Piraeus | 2:2 | ||||
| 9. Round | 03/11/2012 | Olympiakos Piraeus | - | OFI Heraklion | 2:0 | ||||
| 10. Round | 11/11/2012 | AEK Athen | - | Olympiakos Piraeus | 0:4 | ||||
| 11. Round | 17/11/2012 | Olympiakos Piraeus | - | AO Kerkyra | 2:0 | ||||
| 12. Round | 25/11/2012 | PAOK Saloniki | - | Olympiakos Piraeus | 1:1 | ||||
| 13. Round | 01/12/2012 | Olympiakos Piraeus | - | Platanias Chanion | 2:1 | ||||
| 14. Round | 09/12/2012 | Panathinaikos | - | Olympiakos Piraeus | 2:2 | ||||
| 15. Round | 15/12/2012 | Panionios GSS | - | Olympiakos Piraeus | 1:2 | ||||
| 16. Round | 06/01/2013 | Olympiakos Piraeus | - | Veria FC | 3:0 |
Northern Ireland