| 1 | Sat 5 Aug 2023 | 3 1-2 v AFC TottonHarrow Borough 1-2 AFC Totton | Southern League - Premier South |
| 2 | Sat 12 Aug 2023 | 32-2 v Dorchester TownDorchester Town 2-2 Harrow Borough | Southern League - Premier South |
| 3 | Tue 15 Aug 2023 | 3 1-4 v Walton & HershamHarrow Borough 1-4 Walton & Hersham | Southern League - Premier South |
| 4 | Sat 19 Aug 2023 | 30-5 v Basingstoke TownBasingstoke Town 5-0 Harrow Borough | Southern League - Premier South |
| 5 | Sat 26 Aug 2023 | 32-4 v Poole TownHarrow Borough 2-4 Poole Town | Southern League - Premier South |
| 6 | Mon 28 Aug 2023 | 32-2 v HendonHendon 2-2 Harrow Borough | Southern League - Premier South |
| 7 | Sat 2 Sep 2023 | 30-2 v Bracknell TownHarrow Borough 0-2 Bracknell Town | Emirates FA Cup First Qualifying Round |
| 8 | Sat 9 Sep 2023 | 33-2 v SholingHarrow Borough 3-2 Sholing | Southern League - Premier South |
| 9 | Sat 16 Sep 2023 | 31-2 v Hanwell TownHanwell Town 2-1 Harrow Borough | Southern League - Premier South |
| 10 | Sat 23 Sep 2023 | 32-1 v Plymouth ParkwayHarrow Borough 2-1 Plymouth Parkway | Southern League - Premier South |
| 11 | Tue 26 Sep 2023 | 30-3 v Hayes & Yeading UnitedHayes & Yeading United 3-0 Harrow Borough | Southern League - Premier South |
| 12 | Tue 17 Oct 2023 | 122-2 v Didcot TownDidcot Town 2-2 Harrow Borough | Southern League - Premier South |
| 13 | Sat 28 Oct 2023 | 31-2 v Beaconsfield TownHarrow Borough 1-2 Beaconsfield Town | Isuzu FA Trophy First Round |
| 14 | Sat 25 Nov 2023 | 31-2 v Hungerford TownHungerford Town 2-1 Harrow Borough | Southern League - Premier South |
| 15 | Sat 16 Dec 2023 | 34-2 v Basingstoke TownHarrow Borough 4-2 Basingstoke Town | Southern League - Premier South |
| 16 | Sat 23 Dec 2023 | 30-1 v Poole TownPoole Town 1-0 Harrow Borough | Southern League - Premier South |
| 17 | Tue 26 Dec 2023 | 31-3 v HendonHarrow Borough 1-3 Hendon | Southern League - Premier South |
| 18 | Mon 1 Jan 2024 | 30-4 v Chesham UnitedChesham United 4-0 Harrow Borough | Southern League - Premier South |
| 19 | Sat 20 Jan 2024 | 170-1 v AFC TottonAFC Totton 1-0 Harrow Borough | Southern League - Premier South |
| 20 | Sat 10 Feb 2024 | 3 3-3 v Didcot TownHarrow Borough 3-3 Didcot Town | Southern League - Premier South |
| 21 | Thu 28 Mar 2024 | 124-4 v Walton & HershamWalton & Hersham 4-4 Harrow Borough | Southern League - Premier South |
| 22 | Sat 6 Apr 2024 | 22-1 v Beaconsfield TownHarrow Borough 2-1 Beaconsfield Town | Southern League - Premier South |
| 23 | Sat 27 Apr 2024 | 121-7 v Merthyr TownMerthyr Town 7-1 Harrow Borough | Southern League - Premier South |
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