| 31. Journée | 23.02.2021 | Grimsby Town | - | Crawley Town | 2:1 | ||||
| 32. Journée | 27.02.2021 | Harrogate Town | - | Grimsby Town | 1:0 | ||||
| 34. Journée | 06.03.2021 | Grimsby Town | - | Forest Green Rovers | 1:2 | ||||
| 35. Journée | 09.03.2021 | Carlisle United | - | Grimsby Town | 1:1 |  |
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| 36. Journée | 13.03.2021 | Grimsby Town | - | Colchester United | 0:0 | ||||
| 29. Journée | 17.03.2021 | Grimsby Town | - | Tranmere Rovers | 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 | ||||
| 39. Journée | 02.04.2021 | Salford City | - | Grimsby Town | 1:1 | ||||
| 40. Journée | 05.04.2021 | Grimsby Town | - | Cheltenham Town | 1:1 | ||||
| 41. Journée | 10.04.2021 | Bradford City | - | Grimsby Town | 1:0 | ||||
| 42. Journée | 17.04.2021 | Grimsby Town | - | Bolton Wanderers | 2:1 | ||||
| 44. Journée | 24.04.2021 | Oldham Athletic | - | Grimsby Town | 1:2 | |
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| 30. Journée | 27.04.2021 | Exeter City | - | Grimsby Town | 3:2 | ||||
| 45. Journée | 01.05.2021 | Grimsby Town | - | Port Vale FC | 1:0 | ||||
| 46. Journée | 08.05.2021 | Cambridge United | - | Grimsby Town | 3:0 |
Angleterre