| 1 | Sat 22 Aug 2020 | 73-0 v WindsorHarrow Borough 3-0 Windsor | Friendly |
| 2 | Tue 25 Aug 2020 | 73-2 v Potters Bar TownHarrow Borough 3-2 Potters Bar Town | Friendly |
| 3 | Tue 8 Sep 2020 | 24-4 v NorthwoodHarrow Borough 4-4 Northwood | Friendly |
| 4 | Sat 12 Sep 2020 | 21-1 v Langney WanderersLangney Wanderers 1-1 Harrow Borough | Emirates FA Cup Preliminary Round |
| 5 | Sat 19 Sep 2020 | 20-1 v Truro CityTruro City 1-0 Harrow Borough | Southern League - Premier South |
| 6 | Mon 21 Sep 2020 | 22-0 v Beaconsfield TownBeaconsfield Town 0-2 Harrow Borough | Emirates FA Cup First Qualifying Round |
| 7 | Sat 26 Sep 2020 | 21-2 v SalisburyHarrow Borough 1-2 Salisbury | Southern League - Premier South |
| 8 | Tue 29 Sep 2020 | 22-5 v Metropolitan PoliceMetropolitan Police 5-2 Harrow Borough | Southern League - Premier South |
| 9 | Sat 3 Oct 2020 | 21-5 v Cray Valley PMHarrow Borough 1-5 Cray Valley PM | Emirates FA Cup Second Qualifying Round |
| 10 | Tue 6 Oct 2020 | 31-2 v Chesham UnitedHarrow Borough 1-2 Chesham United | Southern League - Premier South |
| 11 | Sat 10 Oct 2020 | 31-1 v Weston-super-MareHarrow Borough 1-1 Weston-super-Mare | Southern League - Premier South |
| 12 | Sat 12 Dec 2020 | 83-0 v Chalfont St PeterHarrow Borough 3-0 Chalfont St Peter | Friendly |
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