Highest Partnerships Against Middlesex By Northamptonshire
| 1 | 125 | MEK Hussey & MB Loye | Lord's Cricket Ground, St John's Wood | 2002 | a14445 |
| 2 | 227* | ML Love & U Afzaal | County Ground, Northampton | 2005 | a16659 |
| 3 | 163 | RJ Bailey & AJ Lamb | Uxbridge Cricket Club Ground, Uxbridge | 1994 | a8710 |
| 4 | 101 | | County Ground, Northampton | 1994 | a8777 |
| 5 | 97 | | County Ground, Northampton | 1977 | a1920 |
| 6 | 81 | | County Ground, Northampton | 1994 | a8777 |
| 7 | 81* | L Klusener & BJ Phillips | County Ground, Northampton | 2006 | a17610 |
| 8 | 39 | | Wardown Park, Luton | 1988 | a5706 |
| 9 | 29 | DJG Sales & DH Wigley | John Walker's Ground, Southgate | 2007 | a18386 |
| 10 | 28 | | Lord's Cricket Ground, St John's Wood | 1969 | a163 |
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