Head to Head
| England League 1 | 2022/04/23 14:00 | Portsmouth v Gillingham | L | 3-1 |
| England League 1 | 2021/11/27 15:00 | Gillingham v Portsmouth | L | 0-1 |
| England League 1 | 2021/02/27 15:00 | Portsmouth v Gillingham | D | 1-1 |
| England League 1 | 2020/10/20 17:30 | Gillingham v Portsmouth | L | 0-2 |
| England League 1 | 2020/01/01 15:00 | Gillingham v Portsmouth | D | 1-1 |
| England League 1 | 2019/10/12 14:00 | Portsmouth v Gillingham | D | 0-0 |
| England League 1 | 2018/12/26 13:00 | Gillingham v Portsmouth | W | 2-0 |
| England League 1 | 2018/10/06 14:00 | Portsmouth v Gillingham | W | 0-2 |
Home History
| Europe Friendlies | 2022/07/09 12:00 | Dover v Gillingham | L | 2-0 |
| Club Friendly List | 2022/07/02 14:00 | Folkestone Invicta v Gillingham | W | 0-2 |
| England League 1 | 2022/04/30 11:30 | Gillingham v Rotherham | L | 0-2 |
| England League 1 | 2022/04/23 14:00 | Portsmouth v Gillingham | L | 3-1 |
| England League 1 | 2022/04/18 14:00 | Gillingham v Fleetwood Town | D | 0-0 |
| England League 1 | 2022/04/15 14:00 | Cheltenham v Gillingham | D | 2-2 |
| England League 1 | 2022/04/09 14:00 | Gillingham v Wycombe | D | 1-1 |
| England League 1 | 2022/04/02 14:00 | Sunderland v Gillingham | L | 1-0 |
Away History
| Europe Friendlies | 2022/07/09 14:00 | Portsmouth v Qatar SC Doha | W | 2-0 |
| Europe Friendlies | 2022/07/03 14:00 | Gosport Borough v Portsmouth | L | 1-0 |
| Club Friendly List | 2022/07/02 14:00 | Havant and W v Portsmouth | W | 0-3 |
| England League 1 | 2022/04/30 11:30 | Sheff Wed v Portsmouth | L | 4-1 |
| England League 1 | 2022/04/26 18:45 | Portsmouth v Wigan | W | 3-2 |
| England League 1 | 2022/04/23 14:00 | Portsmouth v Gillingham | W | 3-1 |
| England League 1 | 2022/04/18 14:00 | Morecambe v Portsmouth | D | 1-1 |
| England League 1 | 2022/04/15 14:00 | Portsmouth v Lincoln City | W | 3-2 |