| 2023-08-12 15:00:00Sat, 12th Aug, 2023 | Diamonds  | 0 - 1 | Sporting Khalsa | Northern Premier League - Midlands Division | | Match Report | 1 |
| 2023-08-15 19:45:00Tue, 15th Aug, 2023 | Spalding United  | 2 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 2 |
| 2023-08-19 15:00:12Sat, 19th Aug, 2023 | Fakenham Town  | 1 - 0 | Diamonds | FA Cup | | Match Report | Preliminary Round |
| 2023-08-22 19:45:00Tue, 22nd Aug, 2023 | Diamonds | 0 - 3 | Bedworth United | Northern Premier League - Midlands Division | | Match Report | 3 |
| 2023-08-26 15:00:00Sat, 26th Aug, 2023 | Gresley Rovers | 2 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 4 |
| 2023-08-28 13:00:00Mon, 28th Aug, 2023 | Diamonds | 1 - 3 | Corby Town | Northern Premier League - Midlands Division | | Match Report | 5 |
| 2023-09-02 15:00:00Sat, 2nd Sep, 2023 | Loughborough Dynamo | 3 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 6 |
| 2023-09-09 15:00:44Sat, 9th Sep, 2023 | Loughborough Dynamo | 1 - 1 | Diamonds | FA Trophy | | Match Report | First Round Qualifying (Dynamo win 5-3 on penalties) |
| 2023-09-16 15:00:00Sat, 16th Sep, 2023 | Coventry Sphinx | 2 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 7 |
| 2023-09-30 15:00:00Sat, 30th Sep, 2023 | Diamonds | 1 - 2 | Hinckley LRFC | Northern Premier League - Midlands Division | | Match Report | 8 |
| 2023-10-08 14:00:00Sun, 8th Oct, 2023 | Cambridge City | 1 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 9 |
| 2023-10-14 15:00:00Sat, 14th Oct, 2023 | Diamonds | 2 - 1 |  Coleshill Town | Northern Premier League - Midlands Division | | Match Report | 10 |
| 2023-10-21 15:00:00Sat, 21st Oct, 2023 | Sutton Coldfield Town | 2 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 11 |
| 2023-10-28 15:00:00Sat, 28th Oct, 2023 | Diamonds | 1 - 1 |  Rugby Town | Northern Premier League - Midlands Division | | Match Report | 12 |
| 2023-11-04 15:00:00Sat, 4th Nov, 2023 | Diamonds | 15:00:00Postponed | Boldmere St Michaels | Northern Premier League - Midlands Division | | Match Report | 13 |
| 2023-11-11 15:00:00Sat, 11th Nov, 2023 | Anstey Nomads | 2 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 14 |
| 2023-11-14 19:45:21Tue, 14th Nov, 2023 | Diamonds | 19:45:21Postponed | Northampton Town Academy | Northants FA Hillier Senior Cup | | Match Report | Quarter-Final |
| 2023-11-18 15:00:00Sat, 18th Nov, 2023 | Diamonds | 15:00:00Postponed | Walsall Wood | Northern Premier League - Midlands Division | | Match Report | 15 |
| 2023-11-25 15:00:00Sat, 25th Nov, 2023 | Shepshed Dynamo  | 2 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 16 |
| 2023-11-28 19:45:28Tue, 28th Nov, 2023 | Diamonds | 1 - 2 | Walsall Wood | Northern Premier League - Midlands Division | | Match Report | 15 (re-arranged) |
| 2023-12-02 15:00:00Sat, 2nd Dec, 2023 | Diamonds | 15:00:00Postponed | Quorn | Northern Premier League - Midlands Division | | Match Report | 17 |
| 2023-12-05 19:45:04Tue, 5th Dec, 2023 | Diamonds | 19:45:04Postponed | Northampton Town Academy | Northants FA Hillier Senior Cup | | Match Report | Quarter-Final (re-arranged) |
| 2023-12-09 15:00:00Sat, 9th Dec, 2023 | Lye Town | 2 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 18 |
| 2023-12-12 19:45:11Tue, 12th Dec, 2023 | Diamonds | 19:45:11Postponed | Boldmere St Michaels | Northern Premier League - Midlands Division | | Match Report | 13 (re-arranged) |
| 2023-12-16 15:00:00Sat, 16th Dec, 2023 | Diamonds | 0 - 3 | Spalding United | Northern Premier League - Midlands Division | | Match Report | 19 |
| 2023-12-23 15:00:00Sat, 23rd Dec, 2023 | Sporting Khalsa | 4 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 20 |
| 2023-12-26 15:00:00Tue, 26th Dec, 2023 | Diamonds | 0 - 4 |  Harborough Town | Northern Premier League - Midlands Division | | Match Report | 21 |
| 2024-01-01 12:00:00Mon, 1st Jan, 2024 | Corby Town | 3 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 22 |
| 2024-01-06 15:00:00Sat, 6th Jan, 2024 | Diamonds | 0 - 3 | Gresley Rovers | Northern Premier League - Midlands Division | | Match Report | 23 |
| 2024-01-09 19:45:43Tue, 9th Jan, 2024 | Diamonds | 2 - 1 | Northampton Town Academy | Northants FA Hillier Senior Cup | | Match Report | Quarter-Final (re-arranged) |
| 2024-01-13 15:00:00Sat, 13th Jan, 2024 | Bedworth United | 2 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 24 |
| 2024-01-16 19:45:50Tue, 16th Jan, 2024 | Diamonds | 19:45:50Postponed | Quorn | Northern Premier League - Midlands Division | | Match Report | 17 (re-arranged) |
| 2024-01-20 15:00:00Sat, 20th Jan, 2024 | Rugby Town | 0 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 25 |
| 2024-01-27 15:00:00Sat, 27th Jan, 2024 | Diamonds | 1 - 0 | Sutton Coldfield Town | Northern Premier League - Midlands Division | | Match Report | 26 |
| 2024-01-30 19:45:02Tue, 30th Jan, 2024 | Diamonds | 3 - 2 | Boldmere St Michaels | Northern Premier League - Midlands Division | | Match Report | 13 (re-arranged) |
| 2024-02-03 15:00:00Sat, 3rd Feb, 2024 | Diamonds | 0 - 0 | Coventry Sphinx | Northern Premier League - Midlands Division | | Match Report | 27 |
| 2024-02-06 19:45:39Tue, 6th Feb, 2024 | Diamonds | 19:45:39Postponed | Quorn | Northern Premier League - Midlands Division | | Match Report | 17 (re-arranged) |
| 2024-02-17 15:00:00Sat, 17th Feb, 2024 | Hinckley LRFC | 3 - 0 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 28 |
| 2024-02-20 19:45:10Tue, 20th Feb, 2024 | Diamonds | 19:45:10Postponed | Peterborough United U23 | Northants FA Hillier Senior Cup | | Match Report | Semi-Final |
| 2024-02-24 15:00:00Sat, 24th Feb, 2024 | Diamonds | 15:00:00Postponed | Cambridge City | Northern Premier League - Midlands Division | | Match Report | 29 |
| 2024-03-02 15:00:00Sat, 2nd Mar, 2024 | Coleshill Town | 0 - 4 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 30 |
| 2024-03-05 19:45:24Tue, 5th Mar, 2024 | Diamonds | 0 - 5 | Quorn | Northern Premier League - Midlands Division | | Match Report | 17 (re-arranged) |
| 2024-03-14 19:45:40Thu, 14th Mar, 2024 | Diamonds | 19:45:40Postponed | Peterborough United U23 | Northants FA Hillier Senior Cup | | Match Report | Semi-Final (re-arranged) |
| 2024-03-16 15:00:00Sat, 16th Mar, 2024 | Diamonds | 0 - 4 | Lye Town | Northern Premier League - Midlands Division | | Match Report | 31 |
| 2024-03-23 15:00:00Sat, 23rd Mar, 2024 | Quorn | 7 - 1 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 32 |
| 2024-03-26 19:45:11Tue, 26th Mar, 2024 | Diamonds | 4 - 1 | Cambridge City | Northern Premier League - Midlands Division | | Match Report | 29 (re-arranged) |
| 2024-03-30 15:00:00Sat, 30th Mar, 2024 | Diamonds | 1 - 1 | Loughborough Dynamo | Northern Premier League - Midlands Division | | Match Report | 33 |
| 2024-04-01 15:00:00Mon, 1st Apr, 2024 | Harborough Town | 0 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 34 |
| 2024-04-04 19:45:59Thu, 4th Apr, 2024 | Diamonds | 2 - 2 | Peterborough United U21 | Northants FA Hillier Senior Cup | | Match Report | Semi-Final (re-arranged) - Diamonds win 3-2 on penalties |
| 2024-04-06 15:00:00Sat, 6th Apr, 2024 | Diamonds | 0 - 3 | Anstey Nomads | Northern Premier League - Midlands Division | | Match Report | 35 |
| 2024-04-13 15:00:00Sat, 13th Apr, 2024 | Boldmere St Michaels | 2 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 36 |
| 2024-04-20 15:00:00Sat, 20th Apr, 2024 | Diamonds | 1 - 0 | Shepshed Dynamo | Northern Premier League - Midlands Division | | Match Report | 37 |
| 2024-04-27 15:00:00Sat, 27th Apr, 2024 | Walsall Wood | 0 - 2 | Diamonds | Northern Premier League - Midlands Division | | Match Report | 38 |
| 2024-04-30 19:45:55Tue, 30th Apr, 2024 | Kettering Town | 0 - 0 | Diamonds | Northants FA Hillier Senior Cup | | Match Report | Hillier Senior Cup Final - Diamonds win 4-2 on penalties |
