| 1 | Sat 10 Jul 2021 | 60-5 v Tonbridge AngelsTonbridge Angels 5-0 Grays Athletic | Friendly |
| 2 | Wed 14 Jul 2021 | 63-3 v Phoenix SportsGrays Athletic 3-3 Phoenix Sports | Friendly |
| 3 | Sat 17 Jul 2021 | 61-2 v KingstonianGrays Athletic 1-2 Kingstonian | Friendly |
| 4 | Sat 24 Jul 2021 | 22-1 v TilburyTilbury 1-2 Grays Athletic | Friendly |
| 5 | Tue 27 Jul 2021 | 61-2 v WareWare 2-1 Grays Athletic | Friendly |
| 6 | Sat 31 Jul 2021 | 121-1 v Braintree TownGrays Athletic 1-1 Braintree Town | Friendly |
| 7 | Wed 4 Aug 2021 | 121-4 v HornchurchGrays Athletic 1-4 Hornchurch | Friendly |
| 8 | Sat 7 Aug 2021 | 50-3 v Enfield TownEnfield Town 3-0 Grays Athletic | Friendly |
| 9 | Sat 14 Aug 2021 | 142-1 v Bury TownGrays Athletic 2-1 Bury Town | Isthmian League - North Division |
| 10 | Sun 22 Aug 2021 | 61-2 v Baldock TownBaldock Town 2-1 Grays Athletic | Emirates FA Cup Preliminary Round |
| 11 | Sat 28 Aug 2021 | 67-0 v Basildon UnitedBasildon United 0-7 Grays Athletic | Isthmian League - North Division |
| 12 | Mon 30 Aug 2021 | 62-1 v AveleyGrays Athletic 2-1 Aveley | Isthmian League - North Division |
| 13 | Fri 10 Sep 2021 | 61-2 v Maldon & TiptreeMaldon & Tiptree 2-1 Grays Athletic | Isthmian League - North Division |
| 14 | Wed 15 Sep 2021 | 64-0 v RomfordGrays Athletic 4-0 Romford | Isthmian League - North Division |
| 15 | Sat 18 Sep 2021 | 61-1 v Coggeshall TownCoggeshall Town 1-1 Grays Athletic | Isthmian League - North Division |
| 16 | Sat 25 Sep 2021 | 61-1 v CorinthianCorinthian 1-1 Grays Athletic | Buildbase FA Trophy First Qualifying Round |
| 17 | Sat 2 Oct 2021 | 23-0 v Felixstowe & Walton UnitedGrays Athletic 3-0 Felixstowe & Walton United | Isthmian League - North Division |
| 18 | Tue 5 Oct 2021 | 142-1 v Brightlingsea RegentGrays Athletic 2-1 Brightlingsea Regent | Friendly |
| 19 | Sat 16 Oct 2021 | 161-0 v FisherGrays Athletic 1-0 Fisher | Friendly |
| 20 | Tue 16 Nov 2021 | 52-1 v Billericay TownGrays Athletic 2-1 Billericay Town | Friendly |
| 21 | Wed 1 Dec 2021 | 20-0 v BarkingGrays Athletic 0-0 Barking | Velocity Trophy Second Round |
| 22 | Sat 11 Dec 2021 | 72-2 v Bury TownBury Town 2-2 Grays Athletic | Isthmian League - North Division |
| 23 | Tue 14 Dec 2021 | 32-0 v Waltham AbbeyWaltham Abbey 0-2 Grays Athletic | Essex County Cup Third Round |
| 24 | Sat 18 Dec 2021 | 22-0 v Basildon UnitedGrays Athletic 2-0 Basildon United | Isthmian League - North Division |
| 25 | Mon 27 Dec 2021 | 121-2 v AveleyAveley 2-1 Grays Athletic | Isthmian League - North Division |
| 26 | Sat 1 Jan 2022 | 61-3 v Canvey IslandGrays Athletic 1-3 Canvey Island | Isthmian League - North Division |
| 27 | Mon 3 Jan 2022 | 60-1 v Brentwood TownBrentwood Town 1-0 Grays Athletic | Isthmian League - North Division |
| 28 | Sat 8 Jan 2022 | 23-0 v Dereham TownGrays Athletic 3-0 Dereham Town | Isthmian League - North Division |
| 29 | Sat 15 Jan 2022 | 21-1 v Coggeshall TownGrays Athletic 1-1 Coggeshall Town | Isthmian League - North Division |
| 30 | Sat 22 Jan 2022 | 166-0 v RomfordRomford 0-6 Grays Athletic | Isthmian League - North Division |
| 31 | Tue 25 Jan 2022 | 21-5 v BarkingBarking 5-1 Grays Athletic | Essex County Cup Fourth Round |
| 32 | Sat 5 Feb 2022 | 151-0 v Felixstowe & Walton UnitedFelixstowe & Walton United 0-1 Grays Athletic | Isthmian League - North Division |
| 33 | Sat 12 Feb 2022 | 20-0 v AFC SudburyAFC Sudbury 0-0 Grays Athletic | Isthmian League - North Division |
| 34 | Tue 15 Feb 2022 | 21-0 v BarkingBarking 0-1 Grays Athletic | Isthmian League - North Division |
| 35 | Sat 19 Feb 2022 | 21-0 v Heybridge SwiftsGrays Athletic 1-0 Heybridge Swifts | Isthmian League - North Division |
| 36 | Sat 5 Mar 2022 | 6 5-2 v BarkingGrays Athletic 5-2 Barking | Isthmian League - North Division |
| 37 | Sat 12 Mar 2022 | 140-1 v Stowmarket TownStowmarket Town 1-0 Grays Athletic | Isthmian League - North Division |
| 38 | Sat 26 Mar 2022 | 2 1-1 v TilburyTilbury 1-1 Grays Athletic | Isthmian League - North Division |
| 39 | Tue 29 Mar 2022 | 21-0 v Hullbridge SportsHullbridge Sports 0-1 Grays Athletic | Isthmian League - North Division |
| 40 | Sat 2 Apr 2022 | 172-1 v Hashtag UnitedGrays Athletic 2-1 Hashtag United | Isthmian League - North Division |
| 41 | Sat 9 Apr 2022 | 21-0 v Dereham TownDereham Town 0-1 Grays Athletic | Isthmian League - North Division |
| 42 | Sat 16 Apr 2022 | 2 0-2 v Brentwood TownGrays Athletic 0-2 Brentwood Town | Isthmian League - North Division |
| 43 | Mon 18 Apr 2022 | 21-3 v Canvey IslandCanvey Island 3-1 Grays Athletic | Isthmian League - North Division |
| 44 | Sat 23 Apr 2022 | 23-2 v Maldon & TiptreeGrays Athletic 3-2 Maldon & Tiptree | Isthmian League - North Division |
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