| 172* | W Larkins | Northamptonshire v Warwickshire | 1983 | a3705 |
| 158 | W Larkins | Northamptonshire v Worcestershire | 1982 | a3416 |
| 122 | MB Loye | Northamptonshire v Somerset | 1993 | a8110 |
| 105* | MW Gatting | Middlesex v Northamptonshire | 1988 | a5707 |
| 102 | PA Neale | Worcestershire v Northamptonshire | 1982 | a3416 |