| 1 | Sat 5 Sep 2020 | 120-4 v Dorking WanderersDorking Wanderers 4-0 Potters Bar Town | Friendly |
| 2 | Sat 19 Sep 2020 | 8 0-3 v Carshalton AthleticCarshalton Athletic 3-0 Potters Bar Town | Isthmian League - Premier Division |
| 3 | Tue 6 Oct 2020 | 123-0 v Cray WanderersPotters Bar Town 3-0 Cray Wanderers | Isthmian League - Premier Division |
| 4 | Sat 10 Oct 2020 | 70-2 v KingstonianKingstonian 2-0 Hornchurch | Isthmian League - Premier Division |
| 5 | Tue 13 Oct 2020 | 162-2 v Hampton & Richmond BoroughHampton & Richmond Borough 2-2 Hornchurch | Emirates FA Cup Third Qualifying Round |
| 6 | Sat 17 Oct 2020 | 16 4-0 v Carshalton AthleticHornchurch 4-0 Carshalton Athletic | Isthmian League - Premier Division |
| 7 | Tue 20 Oct 2020 | 163-0 v CheshuntCheshunt 0-3 Hornchurch | Isthmian League - Premier Division |
| 8 | Sat 24 Oct 2020 | 161-1 v HorshamHornchurch 1-1 Horsham | Isthmian League - Premier Division |
| 9 | Tue 27 Oct 2020 | 163-1 v Haringey BoroughHornchurch 3-1 Haringey Borough | Isthmian League - Premier Division |
| 10 | Sat 31 Oct 2020 | 163-1 v Bowers & PitseaBowers & Pitsea 1-3 Hornchurch | Buildbase FA Trophy Third Qualifying Round |
| 11 | Tue 3 Nov 2020 | 161-2 v Folkestone InvictaFolkestone Invicta 2-1 Hornchurch | Isthmian League - Premier Division |
| 12 | Sat 5 Dec 2020 | 163-0 v Grays AthleticHornchurch 3-0 Grays Athletic | Friendly |
| 13 | Tue 8 Dec 2020 | 164-1 v Wingate & FinchleyHornchurch 4-1 Wingate & Finchley | Buildbase FA Trophy First Round |
| 14 | Tue 15 Dec 2020 | 16 1-0 v Tonbridge AngelsTonbridge Angels 0-1 Hornchurch | Buildbase FA Trophy Second Round |
| 15 | Sat 19 Dec 2020 | 162-1 v Dulwich HamletDulwich Hamlet 1-2 Hornchurch | Buildbase FA Trophy Third Round |
| 16 | Sat 16 Jan 2021 | 161-1 v King's Lynn TownHornchurch 1-1 King's Lynn Town | Buildbase FA Trophy Fourth Round |
| 17 | Sat 6 Feb 2021 | 165-4 v Maidstone UnitedHornchurch 5-4 Maidstone United | Buildbase FA Trophy Fifth Round |
| 18 | Sat 27 Feb 2021 | 16 2-1 v DarlingtonDarlington 1-2 Hornchurch | Buildbase FA Trophy Quarter Final |
| 19 | Sat 27 Mar 2021 | 163-3 v Notts CountyNotts County 3-3 Hornchurch | Buildbase FA Trophy Semi Final |
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