| 1 | Sat 16 Sep 2023 | 12 1-2 v Hanwell TownHanwell Town 2-1 Harrow Borough | Southern League - Premier South |
| 2 | Sat 23 Sep 2023 | 22-1 v Plymouth ParkwayHarrow Borough 2-1 Plymouth Parkway | Southern League - Premier South |
| 3 | Tue 26 Sep 2023 | 20-3 v Hayes & Yeading UnitedHayes & Yeading United 3-0 Harrow Borough | Southern League - Premier South |
| 4 | Sat 7 Oct 2023 | 51-0 v MargateHarrow Borough 1-0 Margate | Isuzu FA Trophy Third Qualifying Round |
| 5 | Sat 14 Oct 2023 | 22-2 v Swindon SupermarineHarrow Borough 2-2 Swindon Supermarine | Southern League - Premier South |
| 6 | Tue 17 Oct 2023 | 22-2 v Didcot TownDidcot Town 2-2 Harrow Borough | Southern League - Premier South |
| 7 | Tue 24 Oct 2023 | 21-4 v Bracknell TownHarrow Borough 1-4 Bracknell Town | Southern League - Premier South |
| 8 | Sat 28 Oct 2023 | 21-2 v Beaconsfield TownHarrow Borough 1-2 Beaconsfield Town | Isuzu FA Trophy First Round |
| 9 | Sat 18 Nov 2023 | 41-2 v Merthyr TownHarrow Borough 1-2 Merthyr Town | Southern League - Premier South |
| 10 | Sat 25 Nov 2023 | 41-2 v Hungerford TownHungerford Town 2-1 Harrow Borough | Southern League - Premier South |
| 11 | Tue 6 Feb 2024 | 122-0 v Gosport BoroughHarrow Borough 2-0 Gosport Borough | Southern League - Premier South |
| 12 | Sat 9 Mar 2024 | 143-1 v SholingSholing 1-3 Harrow Borough | Southern League - Premier South |
| 13 | Mon 1 Apr 2024 | 51-4 v Chesham UnitedHarrow Borough 1-4 Chesham United | Southern League - Premier South |
| 14 | Sat 6 Apr 2024 | 62-1 v Beaconsfield TownHarrow Borough 2-1 Beaconsfield Town | Southern League - Premier South |
| 15 | Tue 9 Apr 2024 | 53-1 v Plymouth ParkwayPlymouth Parkway 1-3 Harrow Borough | Southern League - Premier South |
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