| 27. Journée | 30.01.2021 | Grimsby Town | - | Stevenage FC | 1:2 |  |
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| 28. Journée | 06.02.2021 | Newport County | - | Grimsby Town | 1:0 | ||||
| 31. Journée | 23.02.2021 | Grimsby Town | - | Crawley Town | 2:1 | ||||
| 32. Journée | 27.02.2021 | Harrogate Town | - | Grimsby Town | 1:0 | ||||
| 33. Journée | 02.03.2021 | Grimsby Town | - | Leyton Orient | 0:1 | ||||
| 34. Journée | 06.03.2021 | Grimsby Town | - | Forest Green Rovers | 1:2 | ||||
| 36. Journée | 13.03.2021 | Grimsby Town | - | Colchester United | 0:0 | ||||
| 37. Journée | 20.03.2021 | Mansfield Town | - | Grimsby Town | 2:2 | ||||
| 26. Journée | 23.03.2021 | Barrow AFC | - | Grimsby Town | 0:1 | ||||
| 38. Journée | 27.03.2021 | Grimsby Town | - | Walsall FC | 1:1 |  |
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| 39. Journée | 02.04.2021 | Salford City | - | Grimsby Town | 1:1 | |
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| 40. Journée | 05.04.2021 | Grimsby Town | - | Cheltenham Town | 1:1 | ||||
| 41. Journée | 10.04.2021 | Bradford City | - | Grimsby Town | 1:0 |  |
Angleterre