| 1 | 218 | AS Rollins & MB Loye | Northamptonshire v Zimbabweans | 2000 | a12817 |
| 2 | 245 | G Cook & RJ Bailey | Northamptonshire v Gloucestershire | 1987 | a5225 |
| 3 | 212 | WA Young & SA Zaib | Northamptonshire v Essex | 2022 | a29340 |
| 4 | 215 | DJG Sales & CJL Rogers | Northamptonshire v Yorkshire | 2006 | a17437 |
| 5 | 199 | C Munro & C de Grandhomme | New Zealand A v Northamptonshire | 2014 | a23445 |
| 6 | 167* | DJG Sales & JN Snape | Northamptonshire v Sri Lankans | 1998 | a11324 |
| 7 | 115 | DJG Sales & N Boje | Northamptonshire v Derbyshire | 2008 | a19073 |
| 8 | 131 | RA Whiteley & ZJ Chappell | Derbyshire v Northamptonshire | 2024 | a30976 |
| 9 | 72 | RS Dravid & GI Maiden | Scotland v Northamptonshire | 2003 | a15244 |
| 10 | 50* | EE Hemmings & MK Bore | Nottinghamshire v Northamptonshire | 1979 | a2527 |