| 3. Round | 15/09/2012 | PAS Giannina | - | Olympiakos Piraeus | 1:2 | ||||
| 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 | ||||
| 19. Round | 27/01/2013 | Panthrakikos | - | Olympiakos Piraeus | 0:1 | ||||
| 21. Round | 09/02/2013 | Asteras Tripolis | - | Olympiakos Piraeus | 0:1 | ||||
| 22. Round | 17/02/2013 | Skoda Xanthi | - | Olympiakos Piraeus | 0:2 | ||||
| 23. Round | 24/02/2013 | Olympiakos Piraeus | - | Aris Saloniki | 2:1 | ||||
| 24. Round | 02/03/2013 | OFI Heraklion | - | Olympiakos Piraeus | 0:4 | ||||
| 25. Round | 10/03/2013 | Olympiakos Piraeus | - | AEK Athen | 3:0 | ||||
| 26. Round | 17/03/2013 | AO Kerkyra | - | Olympiakos Piraeus | 0:1 | ||||
| 27. Round | 31/03/2013 | Olympiakos Piraeus | - | PAOK Saloniki | 0:0 | ||||
| 28. Round | 07/04/2013 | Platanias Chanion | - | Olympiakos Piraeus | 0:4 |  |
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| 29. Round | 14/04/2013 | Olympiakos Piraeus | - | Panathinaikos | 1:1 |
Serbia