| 1 | Sat 23 Sep 2023 | 122-1 v Plymouth ParkwayHarrow Borough 2-1 Plymouth Parkway | Southern League - Premier South |
| 2 | Tue 26 Sep 2023 | 120-3 v Hayes & Yeading UnitedHayes & Yeading United 3-0 Harrow Borough | Southern League - Premier South |
| 3 | Sat 7 Oct 2023 | 31-0 v MargateHarrow Borough 1-0 Margate | Isuzu FA Trophy Third Qualifying Round |
| 4 | Sat 14 Oct 2023 | 32-2 v Swindon SupermarineHarrow Borough 2-2 Swindon Supermarine | Southern League - Premier South |
| 5 | Tue 17 Oct 2023 | 32-2 v Didcot TownDidcot Town 2-2 Harrow Borough | Southern League - Premier South |
| 6 | Sat 21 Oct 2023 | 32-1 v Winchester CityWinchester City 1-2 Harrow Borough | Southern League - Premier South |
| 7 | Tue 24 Oct 2023 | 31-4 v Bracknell TownHarrow Borough 1-4 Bracknell Town | Southern League - Premier South |
| 8 | Sat 28 Oct 2023 | 121-2 v Beaconsfield TownHarrow Borough 1-2 Beaconsfield Town | Isuzu FA Trophy First Round |
| 9 | Sat 11 Nov 2023 | 30-0 v Tiverton TownTiverton Town 0-0 Harrow Borough | Southern League - Premier South |
| 10 | Tue 14 Nov 2023 | 31-3 v Beaconsfield TownBeaconsfield Town 3-1 Harrow Borough | Southern League - Premier South |
| 11 | Sat 18 Nov 2023 | 31-2 v Merthyr TownHarrow Borough 1-2 Merthyr Town | Southern League - Premier South |
| 12 | Sat 16 Dec 2023 | 124-2 v Basingstoke TownHarrow Borough 4-2 Basingstoke Town | Southern League - Premier South |
| 13 | Sat 23 Dec 2023 | 60-1 v Poole TownPoole Town 1-0 Harrow Borough | Southern League - Premier South |
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