| 1 | Sat 9 Sep 2023 | 123-2 v SholingHarrow Borough 3-2 Sholing | Southern League - Premier South |
| 2 | Sat 16 Sep 2023 | 6 1-2 v Hanwell TownHanwell Town 2-1 Harrow Borough | Southern League - Premier South |
| 3 | Sat 23 Sep 2023 | 62-1 v Plymouth ParkwayHarrow Borough 2-1 Plymouth Parkway | Southern League - Premier South |
| 4 | Tue 26 Sep 2023 | 60-3 v Hayes & Yeading UnitedHayes & Yeading United 3-0 Harrow Borough | Southern League - Premier South |
| 5 | Sat 7 Oct 2023 | 61-0 v MargateHarrow Borough 1-0 Margate | Isuzu FA Trophy Third Qualifying Round |
| 6 | Sat 14 Oct 2023 | 62-2 v Swindon SupermarineHarrow Borough 2-2 Swindon Supermarine | Southern League - Premier South |
| 7 | Tue 17 Oct 2023 | 62-2 v Didcot TownDidcot Town 2-2 Harrow Borough | Southern League - Premier South |
| 8 | Sat 21 Oct 2023 | 62-1 v Winchester CityWinchester City 1-2 Harrow Borough | Southern League - Premier South |
| 9 | Tue 24 Oct 2023 | 61-4 v Bracknell TownHarrow Borough 1-4 Bracknell Town | Southern League - Premier South |
| 10 | Sat 11 Nov 2023 | 60-0 v Tiverton TownTiverton Town 0-0 Harrow Borough | Southern League - Premier South |
| 11 | Tue 14 Nov 2023 | 61-3 v Beaconsfield TownBeaconsfield Town 3-1 Harrow Borough | Southern League - Premier South |
| 12 | Sat 18 Nov 2023 | 51-2 v Merthyr TownHarrow Borough 1-2 Merthyr Town | Southern League - Premier South |
| 13 | Sat 25 Nov 2023 | 61-2 v Hungerford TownHungerford Town 2-1 Harrow Borough | Southern League - Premier South |
| 14 | Sat 16 Dec 2023 | 64-2 v Basingstoke TownHarrow Borough 4-2 Basingstoke Town | Southern League - Premier South |
| 15 | Tue 26 Dec 2023 | 61-3 v HendonHarrow Borough 1-3 Hendon | Southern League - Premier South |
| 16 | Mon 1 Jan 2024 | 60-4 v Chesham UnitedChesham United 4-0 Harrow Borough | Southern League - Premier South |
| 17 | Sat 13 Jan 2024 | 60-2 v Dorchester TownHarrow Borough 0-2 Dorchester Town | Southern League - Premier South |
| 18 | Sat 20 Jan 2024 | 60-1 v AFC TottonAFC Totton 1-0 Harrow Borough | Southern League - Premier South |
| 19 | Sat 27 Jan 2024 | 61-1 v Hayes & Yeading UnitedHarrow Borough 1-1 Hayes & Yeading United | Southern League - Premier South |
| 20 | Tue 6 Feb 2024 | 62-0 v Gosport BoroughHarrow Borough 2-0 Gosport Borough | Southern League - Premier South |
| 21 | Sat 10 Feb 2024 | 63-3 v Didcot TownHarrow Borough 3-3 Didcot Town | Southern League - Premier South |
| 22 | Sat 17 Feb 2024 | 63-1 v Swindon SupermarineSwindon Supermarine 1-3 Harrow Borough | Southern League - Premier South |
| 23 | Sat 24 Feb 2024 | 61-2 v Winchester CityHarrow Borough 1-2 Winchester City | Southern League - Premier South |
| 24 | Sat 2 Mar 2024 | 61-1 v Bracknell TownBracknell Town 1-1 Harrow Borough | Southern League - Premier South |
| 25 | Sat 16 Mar 2024 | 6 0-1 v Gosport BoroughGosport Borough 1-0 Harrow Borough | Southern League - Premier South |
| 26 | Thu 28 Mar 2024 | 64-4 v Walton & HershamWalton & Hersham 4-4 Harrow Borough | Southern League - Premier South |
| 27 | Sat 13 Apr 2024 | 62-0 v SalisburySalisbury 0-2 Harrow Borough | Southern League - Premier South |
| 28 | Sat 20 Apr 2024 | 61-2 v Tiverton TownHarrow Borough 1-2 Tiverton Town | Southern League - Premier South |
| 29 | Sat 27 Apr 2024 | 61-7 v Merthyr TownMerthyr Town 7-1 Harrow Borough | Southern League - Premier South |
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