Head to Head
| Europe Friendlies | 2020/09/15 18:30 | Glentoran v Portadown | W | 3-1 |
| Northern Ireland Cup | 2020/01/04 15:00 | Glentoran v Portadown | W | 7-6 |
| Northern Ireland Premier | 2017/04/22 14:00 | Glentoran v Portadown | W | 3-0 |
| Northern Ireland Premier | 2017/01/03 19:45 | Portadown v Glentoran | W | 0-5 |
| Northern Ireland Premier | 2016/11/05 15:00 | Glentoran v Portadown | D | 0-0 |
| Northern Ireland Premier | 2016/08/20 14:00 | Portadown v Glentoran | W | 0-1 |
| Northern Ireland Premier | 2016/03/19 15:00 | Glentoran v Portadown | W | 2-1 |
| Northern Ireland Premier | 2015/12/14 19:45 | Portadown v Glentoran | L | 5-3 |
Home History
| Northern Ireland Premier | 2020/12/19 15:00 | Ballymena Utd v Glentoran | D | 1-1 |
| Northern Ireland Premier | 2020/12/15 19:45 | Glentoran v Warrenpoint Town | D | 0-0 |
| Northern Ireland Premier | 2020/12/12 15:00 | Glentoran v Carrick Rangers | W | 6-0 |
| Northern Ireland Premier | 2020/12/05 15:00 | Crusaders v Glentoran | L | 2-0 |
| Northern Ireland Premier | 2020/11/28 15:00 | Glentoran v Dungannon Swifts | W | 5-1 |
| Northern Ireland Premier | 2020/11/24 19:45 | Linfield v Glentoran | D | 3-3 |
| Northern Ireland Premier | 2020/11/07 17:30 | Glentoran v Larne FC | D | 0-0 |
| Northern Ireland Premier | 2020/10/31 15:00 | Coleraine v Glentoran | L | 2-1 |
Away History
| Northern Ireland Premier | 2020/12/12 15:00 | Crusaders v Portadown | L | 5-0 |
| Northern Ireland Premier | 2020/12/08 19:45 | Dungannon Swifts v Portadown | W | 0-3 |
| Northern Ireland Premier | 2020/12/05 15:00 | Portadown v Ballymena Utd | D | 0-0 |
| Northern Ireland Premier | 2020/11/28 15:00 | Cliftonville v Portadown | L | 5-0 |
| Northern Ireland Premier | 2020/11/10 19:45 | Carrick Rangers v Portadown | L | 4-1 |
| Northern Ireland Premier | 2020/11/07 15:00 | Portadown v Linfield | L | 1-2 |
| Northern Ireland Premier | 2020/10/31 15:00 | Warrenpoint Town v Portadown | D | 1-1 |
| Northern Ireland Premier | 2020/10/24 14:00 | Portadown v Coleraine | L | 0-3 |