| 1 | Tue 17 Jul 2018 | 80-1 v SunderlandGrimsby Town 0-1 Sunderland | Friendly |
| 2 | Sat 4 Aug 2018 | 81-4 v Forest Green RoversGrimsby Town 1-4 Forest Green Rovers | Sky Bet League Two |
| 3 | Sat 11 Aug 2018 | 8 2-0 v Macclesfield TownMacclesfield Town 0-2 Grimsby Town | Sky Bet League Two |
| 4 | Sat 25 Aug 2018 | 80-1 v Newport CountyNewport County 1-0 Grimsby Town | Sky Bet League Two |
| 5 | Sat 1 Sep 2018 | 80-1 v Yeovil TownGrimsby Town 0-1 Yeovil Town | Sky Bet League Two |
| 6 | Tue 4 Sep 2018 | 82-1 v Notts CountyGrimsby Town 2-1 Notts County | Checkatrade Trophy Northern Group G |
| 7 | Sat 8 Sep 2018 | 80-4 v BuryBury 4-0 Grimsby Town | Sky Bet League Two |
| 8 | Sat 15 Sep 2018 | 80-3 v Oldham AthleticGrimsby Town 0-3 Oldham Athletic | Sky Bet League Two |
| 9 | Sat 22 Sep 2018 | 80-1 v StevenageStevenage 1-0 Grimsby Town | Sky Bet League Two |
| 10 | Sat 29 Sep 2018 | 81-2 v MorecambeGrimsby Town 1-2 Morecambe | Sky Bet League Two |
| 11 | Tue 2 Oct 2018 | 81-0 v Carlisle UnitedCarlisle United 0-1 Grimsby Town | Sky Bet League Two |
| 12 | Sat 6 Oct 2018 | 82-0 v Port ValeGrimsby Town 2-0 Port Vale | Sky Bet League Two |
| 13 | Tue 9 Oct 2018 | 80-2 v Doncaster RoversDoncaster Rovers 2-0 Grimsby Town | Checkatrade Trophy Northern Group G |
| 14 | Sat 20 Oct 2018 | 80-0 v Exeter CityGrimsby Town 0-0 Exeter City | Sky Bet League Two |
| 15 | Tue 23 Oct 2018 | 81-0 v Colchester UnitedGrimsby Town 1-0 Colchester United | Sky Bet League Two |
| 16 | Sat 27 Oct 2018 | 80-2 v Crewe AlexandraCrewe Alexandra 2-0 Grimsby Town | Sky Bet League Two |
| 17 | Sat 3 Nov 2018 | 80-1 v Cambridge UnitedCambridge United 1-0 Grimsby Town | Sky Bet League Two |
| 18 | Tue 6 Nov 2018 | 81-2 v Mansfield TownMansfield Town 2-1 Grimsby Town | Sky Bet League Two |
| 19 | Tue 27 Nov 2018 | 85-2 v Tranmere RoversGrimsby Town 5-2 Tranmere Rovers | Sky Bet League Two |
| 20 | Sun 2 Dec 2018 | 82-0 v ChesterfieldChesterfield 0-2 Grimsby Town | Emirates FA Cup Second Round |
| 21 | Sat 8 Dec 2018 | 81-2 v Cheltenham TownCheltenham Town 2-1 Grimsby Town | Sky Bet League Two |
| 22 | Sat 15 Dec 2018 | 82-1 v Swindon TownGrimsby Town 2-1 Swindon Town | Sky Bet League Two |
| 23 | Sat 22 Dec 2018 | 8 4-0 v Notts CountyGrimsby Town 4-0 Notts County | Sky Bet League Two |
| 24 | Wed 26 Dec 2018 | 81-0 v Port ValePort Vale 0-1 Grimsby Town | Sky Bet League Two |
| 25 | Sat 29 Dec 2018 | 82-1 v Exeter CityExeter City 1-2 Grimsby Town | Sky Bet League Two |
| 26 | Tue 1 Jan 2019 | 8 0-1 v Mansfield TownGrimsby Town 0-1 Mansfield Town | Sky Bet League Two |
| 27 | Sat 5 Jan 2019 | 8 0-1 v Crystal PalaceCrystal Palace 1-0 Grimsby Town | Emirates FA Cup Third Round |
| 28 | Sat 12 Jan 2019 | 80-2 v Macclesfield TownGrimsby Town 0-2 Macclesfield Town | Sky Bet League Two |
| 29 | Sat 19 Jan 2019 | 8 0-1 v Lincoln CityLincoln City 1-0 Grimsby Town | Sky Bet League Two |
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