| 1 | Sat 22 Aug 2020 | 123-0 v WindsorHarrow Borough 3-0 Windsor | Friendly |
| 2 | Tue 25 Aug 2020 | 143-2 v Potters Bar TownHarrow Borough 3-2 Potters Bar Town | Friendly |
| 3 | Sat 12 Sep 2020 | 81-1 v Langney WanderersLangney Wanderers 1-1 Harrow Borough | Emirates FA Cup Preliminary Round |
| 4 | Sat 19 Sep 2020 | 7 0-1 v Truro CityTruro City 1-0 Harrow Borough | Southern League - Premier South |
| 5 | Mon 21 Sep 2020 | 82-0 v Beaconsfield TownBeaconsfield Town 0-2 Harrow Borough | Emirates FA Cup First Qualifying Round |
| 6 | Sat 26 Sep 2020 | 8 1-2 v SalisburyHarrow Borough 1-2 Salisbury | Southern League - Premier South |
| 7 | Tue 29 Sep 2020 | 122-5 v Metropolitan PoliceMetropolitan Police 5-2 Harrow Borough | Southern League - Premier South |
| 8 | Sat 3 Oct 2020 | 6 1-5 v Cray Valley PMHarrow Borough 1-5 Cray Valley PM | Emirates FA Cup Second Qualifying Round |
| 9 | Tue 6 Oct 2020 | 71-2 v Chesham UnitedHarrow Borough 1-2 Chesham United | Southern League - Premier South |
| 10 | Sat 10 Oct 2020 | 7 1-1 v Weston-super-MareHarrow Borough 1-1 Weston-super-Mare | Southern League - Premier South |
| 11 | Sat 17 Oct 2020 | 72-2 v Gosport BoroughGosport Borough 2-2 Harrow Borough | Southern League - Premier South |
| 12 | Mon 26 Oct 2020 | 74-1 v Beaconsfield TownBeaconsfield Town 1-4 Harrow Borough | Southern League - Premier South |
| 13 | Sat 31 Oct 2020 | 71-4 v Burgess Hill TownBurgess Hill Town 4-1 Harrow Borough | Buildbase FA Trophy Third Qualifying Round |
| 14 | Sat 12 Dec 2020 | 63-0 v Chalfont St PeterHarrow Borough 3-0 Chalfont St Peter | Friendly |
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