| 1 | Sat 5 Sep 2020 | 81-2 v Dagenham & RedbridgeHornchurch 1-2 Dagenham & Redbridge | Friendly |
| 2 | Tue 8 Sep 2020 | 81-3 v Maidstone UnitedHornchurch 1-3 Maidstone United | Friendly |
| 3 | Sat 12 Sep 2020 | 82-0 v Welling UnitedHornchurch 2-0 Welling United | Friendly |
| 4 | Sat 19 Sep 2020 | 82-1 v MersthamHornchurch 2-1 Merstham | Isthmian League - Premier Division |
| 5 | Tue 22 Sep 2020 | 83-0 v Bowers & PitseaBowers & Pitsea 0-3 Hornchurch | Emirates FA Cup First Qualifying Round |
| 6 | Sat 26 Sep 2020 | 80-1 v Bishop's StortfordBishop's Stortford 1-0 Hornchurch | Isthmian League - Premier Division |
| 7 | Tue 29 Sep 2020 | 8 1-1 v MargateMargate 1-1 Hornchurch | Isthmian League - Premier Division |
| 8 | Sat 3 Oct 2020 | 82-0 v WalthamstowWalthamstow 0-2 Hornchurch | Emirates FA Cup Second Qualifying Round |
| 9 | Tue 27 Oct 2020 | 14 3-1 v Haringey BoroughHornchurch 3-1 Haringey Borough | Isthmian League - Premier Division |
| 10 | Sat 5 Dec 2020 | 143-0 v Grays AthleticHornchurch 3-0 Grays Athletic | Friendly |
| 11 | Tue 8 Dec 2020 | 144-1 v Wingate & FinchleyHornchurch 4-1 Wingate & Finchley | Buildbase FA Trophy First Round |
| 12 | Sat 16 Jan 2021 | 141-1 v King's Lynn TownHornchurch 1-1 King's Lynn Town | Buildbase FA Trophy Fourth Round |
| 13 | Sat 6 Feb 2021 | 145-4 v Maidstone UnitedHornchurch 5-4 Maidstone United | Buildbase FA Trophy Fifth Round |
| 14 | Sat 27 Feb 2021 | 82-1 v DarlingtonDarlington 1-2 Hornchurch | Buildbase FA Trophy Quarter Final |
| 15 | Sat 27 Mar 2021 | 8 3-3 v Notts CountyNotts County 3-3 Hornchurch | Buildbase FA Trophy Semi Final |
| 16 | Sat 22 May 2021 | 83-1 v HerefordHereford 1-3 Hornchurch | Buildbase FA Trophy Final |
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