| 1 | Sat 10 Aug | 20-1 v Fleetwood TownFleetwood Town 1-0 Grimsby Town | Sky Bet League Two |
| 2 | Tue 13 Aug | 21-1 v Bradford CityGrimsby Town 1-1 Bradford City | Carabao Cup First Round |
| 3 | Sat 17 Aug | 23-2 v Cheltenham TownGrimsby Town 3-2 Cheltenham Town | Sky Bet League Two |
| 4 | Thu 22 Aug | 21-4 v Notts CountyNotts County 4-1 Grimsby Town | Sky Bet League Two |
| 5 | Sat 31 Aug | 22-1 v Bradford CityGrimsby Town 2-1 Bradford City | Sky Bet League Two |
| 6 | Sat 21 Sep | 21-0 v BromleyGrimsby Town 1-0 Bromley | Sky Bet League Two |
| 7 | Sat 28 Sep | 23-2 v Carlisle UnitedCarlisle United 2-3 Grimsby Town | Sky Bet League Two |
| 8 | Tue 1 Oct | 21-0 v GillinghamGillingham 0-1 Grimsby Town | Sky Bet League Two |
| 9 | Sat 5 Oct | 20-3 v Doncaster RoversGrimsby Town 0-3 Doncaster Rovers | Sky Bet League Two |
| 10 | Tue 8 Oct | 21-2 v Lincoln CityGrimsby Town 1-2 Lincoln City | EFL Trophy Northern Group G |
| 11 | Sat 12 Oct | 2 2-1 v Salford CitySalford City 1-2 Grimsby Town | Sky Bet League Two |
| 12 | Sat 19 Oct | 21-4 v WalsallGrimsby Town 1-4 Walsall | Sky Bet League Two |
| 13 | Tue 22 Oct | 21-0 v Tranmere RoversTranmere Rovers 0-1 Grimsby Town | Sky Bet League Two |
| 14 | Sat 9 Nov | 21-0 v AFC WimbledonAFC Wimbledon 0-1 Grimsby Town | Sky Bet League Two |
| 15 | Tue 12 Nov | 22-3 v ChesterfieldChesterfield 3-2 Grimsby Town | EFL Trophy Northern Group G |
| 16 | Tue 3 Dec | 25-2 v Accrington StanleyGrimsby Town 5-2 Accrington Stanley | Sky Bet League Two |
| 17 | Sat 7 Dec | 23-0 v MorecambeMorecambe 0-3 Grimsby Town | Sky Bet League Two |
| 18 | Sat 14 Dec | 20-2 v Crewe AlexandraGrimsby Town 0-2 Crewe Alexandra | Sky Bet League Two |
| 19 | Sat 21 Dec | 21-3 v Swindon TownSwindon Town 3-1 Grimsby Town | Sky Bet League Two |
| 20 | Thu 26 Dec | 22-1 v Harrogate TownGrimsby Town 2-1 Harrogate Town | Sky Bet League Two |
| 21 | Sun 29 Dec | 23-0 v Port ValeGrimsby Town 3-0 Port Vale | Sky Bet League Two |
| 22 | Wed 1 Jan | 22-3 v Accrington StanleyAccrington Stanley 3-2 Grimsby Town | Sky Bet League Two |
| 23 | Sat 4 Jan | 21-3 v Bradford CityBradford City 3-1 Grimsby Town | Sky Bet League Two |
| 24 | Sat 18 Jan | 21-1 v ChesterfieldGrimsby Town 1-1 Chesterfield | Sky Bet League Two |
| 25 | Sat 25 Jan | 20-3 v BarrowBarrow 3-0 Grimsby Town | Sky Bet League Two |
| 26 | Tue 28 Jan | 21-1 v GillinghamGrimsby Town 1-1 Gillingham | Sky Bet League Two |
| 27 | Sat 1 Feb | 2 2-0 v BromleyBromley 0-2 Grimsby Town | Sky Bet League Two |
| 28 | Sat 1 Mar | 21-1 v Cheltenham TownCheltenham Town 1-1 Grimsby Town | Sky Bet League Two |
| 29 | Sat 8 Mar | 23-1 v WalsallWalsall 1-3 Grimsby Town | Sky Bet League Two |
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