| 1 | Sat 19 Sep 2020 | 260-4 v Salford CityGrimsby Town 0-4 Salford City | Sky Bet League Two |
| 2 | Sat 10 Oct 2020 | 260-0 v Bolton WanderersBolton Wanderers 0-0 Grimsby Town | Sky Bet League Two |
| 3 | Sat 17 Oct 2020 | 263-2 v Leyton OrientLeyton Orient 2-3 Grimsby Town | Sky Bet League Two |
| 4 | Sat 24 Oct 2020 | 26 1-1 v Carlisle UnitedGrimsby Town 1-1 Carlisle United | Sky Bet League Two |
| 5 | Tue 27 Oct 2020 | 26 0-1 v Forest Green RoversForest Green Rovers 1-0 Grimsby Town | Sky Bet League Two |
| 6 | Sat 31 Oct 2020 | 26 0-0 v StevenageStevenage 0-0 Grimsby Town | Sky Bet League Two |
| 7 | Tue 3 Nov 2020 | 261-0 v BarrowGrimsby Town 1-0 Barrow | Sky Bet League Two |
| 8 | Sat 21 Nov 2020 | 260-5 v Tranmere RoversTranmere Rovers 5-0 Grimsby Town | Sky Bet League Two |
| 9 | Tue 1 Dec 2020 | 261-4 v Exeter CityGrimsby Town 1-4 Exeter City | Sky Bet League Two |
| 10 | Sat 5 Dec 2020 | 261-2 v Colchester UnitedColchester United 2-1 Grimsby Town | Sky Bet League Two |
| 11 | Tue 8 Dec 2020 | 26 0-2 v Newport CountyGrimsby Town 0-2 Newport County | Sky Bet League Two |
| 12 | Sat 12 Dec 2020 | 261-1 v Mansfield TownGrimsby Town 1-1 Mansfield Town | Sky Bet League Two |