Smallest victories by Northamptonshire in List A
By runs
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 1 run | - | 285 | 60.0 | v Hampshire | Southampton | 15 Aug 1990 | List A | |
| 1 run | - | 258 | 50.0 | v Derbyshire | Northampton | 18 Jun 2006 | List A | |
| 2 runs | - | 206 | 55.0 | v Yorkshire | Bradford | 22 May 1980 | List A | |
| 3 runs | - | 147 | 40.0 | v Notts | Peterborough | 20 Jun 1971 | List A | |
| 4 runs | - | 264 | 60.0 | v Worcs | Northampton | 1 Aug 1990 | List A | |
| 4 runs | - | 220 | 45.0 | v Kent | Canterbury | 7 Sep 2004 | List A | |
| 5 runs | - | 170 | 54.1 | v Worcs | Northampton | 20 May 1980 | List A | |
| 5 runs | - | 227 | 55.0 | v Leics | Leicester | 24 Apr 1990 | List A | |
| 5 runs | - | 236 | 45.0 | v Surrey | Northampton | 13 Jun 1999 | List A | |
| 5 runs | - | 196 | 45.0 | v Kent | Northampton | 3 Sep 2000 | List A | |
| 5 runs | - | 230 | 44.2 | v Surrey | Northampton | 4 Jun 2002 | List A | |
| 6 runs | - | 210 | 55.0 | v Essex | Lord's | 19 Jul 1980 | List A | |
| 6 runs | - | 269 | 40.0 | v Glamorgan | Colwyn Bay | 9 Aug 2009 | List A | |
| 7 runs | - | 211 | 27.0 | v Notts | Milton Keynes | 8 Jun 1997 | List A | |
| 7 runs | - | 188 | 44.5 | v Derbyshire | Derby | 25 Jul 1999 | List A | |
| 8 runs | - | 147 | 38.4 | v Hampshire | Portsmouth | 16 May 1971 | List A | |
| 8 runs | - | 276 | 60.0 | v Notts | Nottingham | 14 Jul 1976 | List A | |
| 9 runs | - | 203 | 45.0 | v Gloucs | Bristol | 24 Apr 2005 | List A | |
| 11 runs | - | 207 | 53.4 | v Middlesex | Lord's | 25 Jun 1980 | List A | |
| 11 runs | - | 210 | 58.5 | v Durham | Darlington | 4 Jul 1984 | List A | |
| 12 runs | - | 227 | 55.0 | v Notts | Northampton | 14 May 1988 | List A | |
| 13 runs | - | 149 | 42.2 | v Sussex | Northampton | 15 Jun 2003 | List A | |
| 14 runs | - | 262 | 45.0 | v Middlesex | Lord's | 15 Aug 2005 | List A | |
| 16 runs | - | 37 | 14.4 | v Hampshire | Northampton | 4 Aug 2002 | List A | |
| 17 runs | - | 197 | 55.0 | v Warwickshire | Northampton | 8 Jun 1977 | List A | |
| 17 runs | - | 136 | 17.0 | v Notts | Northampton | 4 Jul 1999 | List A | |
| 17 runs | - | 268 | 44.3 | v Glamorgan | Northampton | 11 Jul 2004 | List A | |
| 18 runs | - | 91 | 17.4 | v Hampshire | Northampton | 10 May 1970 | List A | |
| 18 runs | - | 239 | 39.0 | v Warwickshire | Northampton | 8 May 2011 | List A | |
| 19 runs | - | 239 | 49.3 | v Middlesex | Lord's | 17 May 2005 | List A | |
| 19 runs | - | 67 | 10.1 | v Lancashire | Manchester | 14 Aug 2014 | List A | |
| 20 runs | - | 170 | 40.0 | v Worcs | Wellingborough | 9 Aug 1970 | List A | |
| 21 runs | - | 127 | 31.0 | v Worcs | Worcester | 2 Aug 2015 | List A | |
| 22 runs | - | 252 | 44.1 | v Somerset | Northampton | 18 Jun 2000 | List A | |
| 23 runs | - | 227 | 54.2 | v Leics | Northampton | 13 May 1986 | List A | |
| 23 runs | - | 294 | 47.2 | v Kent | Northampton | 28 May 1996 | List A | |
| 23 runs | - | 272 | 39.5 | v Notts | Northampton | 30 Jul 2006 | List A | |
| 23 runs | - | 320 | 49.5 | v Worcs | Worcester | 27 Jul 2016 | List A | |
| 24 runs | - | 275 | 57.1 | v Notts | Northampton | 11 Jul 1990 | List A | |
| 24 runs | - | 227 | 57.4 | v Gloucs | Bristol | 1 Aug 1995 | List A | |
| 26 runs | - | 257 | 54.3 | v Scotland | Northampton | 5 May 1984 | List A | |
| 26 runs | - | 255 | 60.0 | v Glamorgan | Northampton | 31 Jul 1991 | List A | |
| 27 runs | - | 221 | 47.5 | v Warwickshire | Northampton | 11 Jun 1996 | List A | |
| 27 runs | - | 226 | 45.0 | v Durham | Northampton | 30 Aug 1999 | List A | |
| 27 runs | - | 129 | 33.4 | v Gloucs | Bristol | 17 Sep 2000 | List A | |
| 27 runs | - | 242 | 42.3 | v Durham | Northampton | 7 Sep 2003 | List A | |
| 28 runs | - | 199 | 38.0 | v Middlesex | Northampton | 17 Sep 2006 | List A | |
| 29 runs | - | 213 | 50.5 | v Somerset | Taunton | 27 May 1987 | List A | |
| 29 runs | - | 264 | 39.4 | v Kent | Tunbridge Wells | 2 Jun 2013 | List A | |
| 29 runs | - | 291 | 50.0 | v Leics | Leicester | 4 May 2019 | List A | |
| 32 runs | - | 257 | 59.5 | v Suffolk | Bury St Edmunds | 28 Jun 1989 | List A | |
| 32 runs | - | 139 | 22.0 | v Netherlands | Rotterdam | 22 Aug 2010 | List A | |
| 33 runs | - | 144 | 26.0 | v Sussex | Northampton | 29 Aug 2006 | List A | |
| 34 runs | - | 212 | 52.1 | v Yorkshire | Leeds | 11 May 1993 | List A | |
| 35 runs | - | 166 | 56.3 | v Derbyshire | Northampton | 2 May 1964 | List A | |
| 35 runs | - | 201 | 39.0 | v Glamorgan | Northampton | 4 May 2009 | List A | |
| 36 runs | - | 224 | 60.0 | v Cumberland | Barrow-in-Furness | 24 Jun 1997 | List A | |
| 36 runs | - | 230 | 37.3 | v Warwickshire | Northampton | 27 May 2013 | List A | |
| 37 runs | - | 256 | 55.2 | v Sussex | Hove | 22 Aug 1979 | List A | |
| 37 runs | - | 225 | 55.0 | v Leics | Northampton | 16 May 1987 | List A | |
| 38 runs | - | 236 | 51.1 | v Lancashire | Northampton | 9 May 1989 | List A | |
| 38 runs | - | 353 | 60.0 | v Notts | Nottingham | 12 Jul 1995 | List A | |
| 38 runs | - | 160 | 22.1 | v Middlesex | Northampton | 6 Jun 1999 | List A | |
| 38 runs | - | 276 | 45.0 | v Worcs | Worcester | 2 Aug 2005 | List A | |
| 39 runs | - | 152 | 38.5 | v Derbyshire | Northampton | 31 May 1970 | List A | |
| 39 runs | - | 172 | 38.5 | v Middlesex | Lord's | 26 Jul 1970 | List A | |
| 42 runs | - | 287 | 42.1 | v Zimbabweans | Northampton | 1 Jul 2000 | List A | |
| 42 runs | - | 220 | 37.4 | v Worcs | Worcester | 26 May 2013 | List A | |
| 44 runs | - | 203 | 55.0 | v Minor C | Darlington | 10 May 1988 | List A | |
| 45 runs | - | 236 | 55.0 | v Scotland | Forfar | 21 Apr 1992 | List A | |
| 45 runs | - | 197 | 33.4 | v Lancashire | Manchester | 27 Apr 2003 | List A | |
| 46 runs | - | 212 | 55.2 | v Yorkshire | Leeds | 20 Jul 1983 | List A | |
| 49 runs | - | 153 | 41.0 | v Worcs | Northampton | 17 May 1975 | List A | |
| 49 runs | - | 216 | 43.0 | v Durham | Chester-le-Street | 13 Jul 2003 | List A | |
| 49 runs | - | 265 | 39.5 | v Middlesex | Lord's | 5 Aug 2010 | List A | |
| 49 runs | - | 340 | 46.2 | v Notts | Market Warsop | 20 May 2018 | List A | |
| 52 runs | - | 239 | 50.0 | v Leics | Northampton | 12 May 1997 | List A | |
| 55 runs | - | 245 | 44.3 | v Leics | Northampton | 29 Jul 2015 | List A | |
| 58 runs | - | 220 | 46.5 | v Warwickshire | Coventry | 28 Apr 1973 | List A | |
| 58 runs | - | 284 | 52.0 | v Gloucs | Northampton | 12 May 1987 | List A | |
| 60 runs | - | 301 | 39.2 | v Pakistan A | Northampton | 12 Aug 1997 | List A | |
| 60 runs | - | 190 | 39.0 | v Yorkshire | Leeds | 25 Jun 2000 | List A | |
| 62 runs | - | 262 | 41.2 | v Lancashire | Northampton | 7 Jul 2002 | List A | |
| 63 runs | - | 192 | 34.3 | v Sussex | Arundel | 16 Jun 2013 | List A | |
| 65 runs | - | 212 | 40.1 | v Kent | Northampton | 23 May 2004 | List A | |
| 66 runs | - | 175 | 40.0 | v Worcs | Northampton | 11 May 1969 | List A | |
| 66 runs | - | 192 | 38.3 | v Derbyshire | Derby | 23 Apr 1991 | List A | |
| 67 runs | - | 199 | 33.5 | v Middlesex | Lord's | 1 Jun 1997 | List A | |
| 68 runs | - | 235 | 60.0 | v Cambs | Northampton | 24 Jun 1992 | List A | |
| 69 runs | - | 199 | 36.0 | v Warwickshire | Northampton | 19 Jul 1970 | List A | |
| 69 runs | - | 211 | 41.5 | v Cambs | March | 25 Jun 1975 | List A | |
| 69 runs | - | 204 | 55.0 | v Comb Univ | Northampton | 10 May 1980 | List A | |
| 69 runs | - | 253 | 43.5 | v Yorkshire | Northampton | 5 Jul 2000 | List A | |
| 72 runs | - | 251 | 34.5 | v Gloucs | Cheltenham | 19 Jul 1998 | List A | |
| 75 runs | - | 249 | 55.0 | v Worcs | Northampton | 7 May 1991 | List A | |
| 75 runs | - | 320 | 43.4 | v Scotland | Northampton | 6 Aug 2003 | List A | |
| 76 runs | - | 288 | 43.3 | v Lancashire | Northampton | 8 Jun 2016 | List A | |
| 77 runs | - | 215 | 29.1 | v Durham | Chester-le-Street | 19 Jun 1999 | List A | |
| 78 runs | - | 179 | 27.5 | v Leics | Leicester | 16 Aug 1970 | List A | |
| 81 runs | - | 305 | 40.5 | v Somerset | Northampton | 8 Aug 2021 | List A | |
| 83 runs | - | 225 | 51.1 | v Glamorgan | Swansea | 29 Jul 1992 | List A | |
| 85 runs | - | 250 | 51.2 | v Leics | Leicester | 12 Aug 1987 | List A | |
| 87 runs | - | 287 | 54.3 | v Yorkshire | Leeds | 15 Aug 1995 | List A | |
| 87 runs | - | 416 | 45.1 | v Somerset | Northampton | 9 Aug 2023 | List A | |
| 88 runs | - | 199 | 49.4 | v Ireland | Northampton | 24 Jun 1987 | List A | |
| 89 runs | - | 182 | 29.4 | v Sussex | Northampton | 13 Sep 1998 | List A | |
| 98 runs | - | 267 | 39.1 | v Hampshire | Northampton | 1 May 2005 | List A | |
| 99 runs | - | 206 | 36.4 | v Ireland | Dublin | 28 May 2008 | List A | |
| 99 runs | - | 245 | 31.5 | v Kent | Canterbury | 27 Sep 2009 | List A | |
| 100 runs | - | 240 | 47.4 | v MC East | Northampton | 20 May 1978 | List A | |
| 100 runs | - | 271 | 54.2 | v Shropshire | Telford | 3 Jul 1985 | List A | |
| 102 runs | - | 265 | 27.0 | v Surrey | Croydon | 3 Aug 2002 | List A | |
| 104 runs | - | 282 | 40.5 | v Notts | Northampton | 7 Jul 1999 | List A | |
| 109 runs | - | 267 | 36.4 | v Gloucs | Gloucester | 13 Jun 2004 | List A | |
| 118 runs | - | 213 | 24.0 | v Gloucs | Northampton | 6 May 2002 | List A | |
| 119 runs | - | 239 | 30.2 | v Netherlands | Northampton | 31 May 2010 | List A | |
| 125 runs | - | 325 | 31.1 | v Warwickshire | Birmingham | 26 Aug 2013 | List A | |
| 130 runs | - | 248 | 36.0 | v Worcs | Northampton | 18 Jul 1984 | List A | |
| 130 runs | - | 296 | 39.0 | v Worcs | Northampton | 4 Aug 2024 | List A | |
| 133 runs | - | 326 | 50.3 | v Yorkshire | Northampton | 9 Jul 1992 | List A | |
| 145 runs | - | 300 | 34.1 | v Somerset | Taunton | 3 May 2002 | List A | |
| 150 runs | - | 322 | 31.2 | v Durham | Chester-le-Street | 15 Aug 2025 | List A | |
| 152 runs | - | 261 | 43.3 | v Staffs | Stone | 26 Jun 1991 | List A | |
| 153 runs | - | 305 | 55.0 | v Scotland | Northampton | 16 May 1995 | List A | |
| 156 runs | - | 284 | 55.0 | v Warwickshire | Birmingham | 15 May 1986 | List A | |
| 163 runs | - | 274 | 40.1 | v Cambs | Northampton | 5 May 2004 | List A | |
| 165 runs | - | 286 | 45.0 | v Wiltshire | Swindon | 29 Jun 1983 | List A | |
| 170 runs | - | 356 | 35.3 | v Durham | Northampton | 24 Jul 2016 | List A | |
| 177 runs | - | 260 | 39.2 | v Scotland | Glasgow | 15 May 1982 | List A | |
| 194 runs | - | 359 | 34.4 | v Warwickshire | Northampton | 21 Apr 2019 | List A | |
| 212 runs | - | 297 | 21.0 | v Notts | Nottingham | 31 Aug 2003 | List A | |
| 214 runs | - | 287 | 24.0 | v Middlesex | Lord's | 11 Aug 2002 | List A | |
| 216 runs | - | 361 | 60.0 | v Staffs | Northampton | 27 Jun 1990 | List A |
By wickets
Winner | Margin | Balls Rem | Target | Overs | Opposition | Ground | Match Date | Scorecard |
| 1 wicket | 6 | 194 | 39.0 | v Somerset | Northampton | 20 Jul 1969 | List A | |
| 1 wicket | 1 | 187 | 59.5 | v Lancashire | Northampton | 19 Aug 1981 | List A | |
| 1 wicket | 64 | 129 | 39.2 | v Suffolk | Bury St Edmunds | 29 May 2002 | List A | |
| 2 wickets | 4 | 131 | 59.2 | v Gloucs | Bristol | 22 May 1965 | List A | |
| 2 wickets | 1 | 216 | 59.5 | v Hampshire | Southampton | 18 Aug 1976 | List A | |
| 2 wickets | 4 | 242 | 59.2 | v Gloucs | Bristol | 13 Jul 1977 | List A | |
| 2 wickets | 1 | 280 | 49.5 | v Lancashire | Northampton | 23 May 2018 | List A | |
| 3 wickets | 74 | 145 | 42.4 | v Middlesex | Lord's | 4 May 1974 | List A | |
| 3 wickets | 14 | 152 | 57.4 | v Durham | Northampton | 29 Jun 1977 | List A | |
| 3 wickets | 5 | 239 | 59.1 | v Leics | Northampton | 1 Aug 1984 | List A | |
| 3 wickets | 25 | 150 | 55.5 | v Warwickshire | Birmingham | 12 Aug 1992 | List A | |
| 3 wickets | 23 | 162 | 41.1 | v Yorkshire | Northampton | 8 Jul 2001 | List A | |
| 3 wickets | 2 | 344 | 49.4 | v Essex | Northampton | 7 Aug 2022 | List A | |
| 3 wickets | 8 | 243 | 43.4 | v Sussex | Northampton | 6 Aug 2023 | List A | |
| 4 wickets | 3 | 175 | 39.3 | v Glamorgan | Northampton | 4 Jul 1971 | List A | |
| 4 wickets | 11 | 196 | 58.1 | v Lancashire | Lord's | 4 Sep 1976 | List A | |
| 4 wickets | 1 | 218 | 54.5 | v Gloucs | Northampton | 11 May 1985 | List A | |
| 4 wickets | 7 | 222 | 53.5 | v Warwickshire | Birmingham | 25 Apr 1989 | List A | |
| 4 wickets | 6 | 218 | 49.0 | v Worcs | Worcester | 26 Apr 1996 | List A | |
| 4 wickets | 2 | 171 | 22.4 | v Hampshire | Northampton | 22 Jun 1997 | List A | |
| 4 wickets | 10 | 208 | 43.2 | v Surrey | The Oval | 25 Apr 1999 | List A | |
| 4 wickets | 9 | 188 | 43.3 | v Leics | Leicester | 16 Jul 2000 | List A | |
| 4 wickets | 41 | 182 | 37.1 | v Notts | Northampton | 2 Sep 2001 | List A | |
| 4 wickets | 2 | 218 | 44.4 | v Sussex | Hove | 5 May 2003 | List A | |
| 4 wickets | 9 | 203 | 43.3 | v Somerset | Northampton | 12 Aug 2003 | List A | |
| 4 wickets | 10 | 227 | 43.2 | v Hampshire | Southampton | 30 May 2005 | List A | |
| 4 wickets | 5 | 208 | 44.1 | v Notts | Northampton | 28 Aug 2005 | List A | |
| 4 wickets | 6 | 158 | 27.0 | v Warwickshire | Birmingham | 13 Aug 2006 | List A | |
| 4 wickets | 7 | 294 | 48.5 | v Warwickshire | Northampton | 27 Apr 2008 | List A | |
| 4 wickets | 5 | 201 | 39.1 | v Scotland | Northampton | 22 May 2011 | List A | |
| 4 wickets | 19 | 177 | 36.5 | v Netherlands | Northampton | 15 Aug 2013 | List A | |
| 4 wickets | 47 | 241 | 42.1 | v Gloucs | Cheltenham | 27 Jul 2014 | List A | |
| 4 wickets | 6 | 248 | 49.0 | v Somerset | Northampton | 3 Aug 2015 | List A | |
| 4 wickets | 54 | 216 | 41.0 | v Gloucs | Northampton | 17 Aug 2015 | List A | |
| 5 wickets | 7 | 112 | 38.5 | v Leics | Kettering | 22 Aug 1971 | List A | |
| 5 wickets | 94 | 136 | 39.2 | v Minor C | Slough | 3 May 1986 | List A | |
| 5 wickets | 2 | 276 | 54.4 | v Kent | Canterbury | 10 Jun 1987 | List A | |
| 5 wickets | 7 | 212 | 58.5 | v Surrey | Northampton | 8 Jul 1987 | List A | |
| 5 wickets | 18 | 211 | 57.0 | v Somerset | Taunton | 12 Jul 1989 | List A | |
| 5 wickets | 13 | 287 | 57.5 | v Essex | Chelmsford | 7 Jul 1993 | List A | |
| 5 wickets | 110 | 175 | 31.4 | v Scotland | Forfar | 30 Apr 1996 | List A | |
| 5 wickets | 7 | 192 | 40.5 | v Indians | Luton | 21 May 1996 | List A | |
| 5 wickets | 104 | 161 | 32.4 | v Scotland | Northampton | 5 May 1997 | List A | |
| 5 wickets | 9 | 207 | 38.3 | v Surrey | Northampton | 27 Jul 1997 | List A | |
| 5 wickets | 6 | 186 | 39.0 | v Durham | Northampton | 8 Sep 1997 | List A | |
| 5 wickets | 10 | 180 | 38.2 | v Leics | Northampton | 14 Sep 1997 | List A | |
| 5 wickets | 106 | 104 | 32.2 | v Minor C | Luton | 29 Apr 1998 | List A | |
| 5 wickets | 8 | 141 | 38.4 | v Leics | Leicester | 18 Jul 1998 | List A | |
| 5 wickets | 16 | 155 | 37.2 | v Notts | Nottingham | 2 Aug 1998 | List A | |
| 5 wickets | 12 | 282 | 48.0 | v Essex | Northampton | 23 Jun 1999 | List A | |
| 5 wickets | 8 | 226 | 43.4 | v Notts | Nottingham | 10 Aug 1999 | List A | |
| 5 wickets | 16 | 157 | 42.2 | v Middlesex | Lord's | 22 Aug 1999 | List A | |
| 5 wickets | 3 | 295 | 44.3 | v Notts | Northampton | 4 May 2003 | List A | |
| 5 wickets | 11 | 154 | 43.1 | v Hampshire | Southampton | 18 Jul 2004 | List A | |
| 5 wickets | 7 | 189 | 39.5 | v Surrey | Northampton | 29 Aug 2004 | List A | |
| 5 wickets | 10 | 216 | 43.2 | v Gloucs | Stowe | 19 Jun 2005 | List A | |
| 5 wickets | 6 | 226 | 39.0 | v Hampshire | Northampton | 27 Aug 2007 | List A | |
| 5 wickets | 26 | 233 | 45.4 | v Warwickshire | Birmingham | 11 May 2008 | List A | |
| 5 wickets | 18 | 172 | 37.0 | v Derbyshire | Derby | 30 Aug 2010 | List A | |
| 5 wickets | 9 | 173 | 38.3 | v Durham | Chester-le-Street | 1 May 2011 | List A | |
| 5 wickets | 52 | 146 | 31.2 | v Warwickshire | Birmingham | 29 Aug 2011 | List A | |
| 5 wickets | 2 | 189 | 39.4 | v Kent | Northampton | 13 Aug 2013 | List A | |
| 6 wickets | 43 | 141 | 57.5 | v Warwickshire | Northampton | 22 May 1963 | List A | |
| 6 wickets | 156 | 130 | 39.0 | v Middlesex | Lord's | 12 Jun 1963 | List A | |
| 6 wickets | 10 | 156 | 38.2 | v Derbyshire | Chesterfield | 29 Jun 1969 | List A | |
| 6 wickets | 8 | 174 | 38.4 | v Gloucs | Northampton | 24 Aug 1969 | List A | |
| 6 wickets | - | 217 | 55.0 | v Yorkshire | Middlesbrough | 30 Apr 1977 | List A | |
| 6 wickets | 23 | 198 | 51.1 | v Sussex | Eastbourne | 28 Apr 1979 | List A | |
| 6 wickets | 24 | 239 | 56.0 | v Surrey | Northampton | 18 Jul 1979 | List A | |
| 6 wickets | 15 | 203 | 52.3 | v Warwickshire | Birmingham | 14 May 1980 | List A | |
| 6 wickets | 85 | 186 | 40.5 | v Scotland | Northampton | 16 May 1985 | List A | |
| 6 wickets | 20 | 205 | 56.4 | v Essex | Chelmsford | 29 Jul 1987 | List A | |
| 6 wickets | 68 | 187 | 43.4 | v Comb Univ | Northampton | 4 May 1991 | List A | |
| 6 wickets | 19 | 179 | 56.5 | v Lancashire | Northampton | 22 Jun 1993 | List A | |
| 6 wickets | 12 | 233 | 48.0 | v Notts | Northampton | 7 May 1996 | List A | |
| 6 wickets | 36 | 197 | 39.0 | v Sussex | Eastbourne | 20 Aug 2000 | List A | |
| 6 wickets | 81 | 147 | 31.3 | v Middlesex | Northampton | 19 May 2002 | List A | |
| 6 wickets | 49 | 264 | 41.5 | v Ireland | Dublin | 30 May 2004 | List A | |
| 6 wickets | - | 197 | 34.0 | v Scotland | Northampton | 7 May 2007 | List A | |
| 6 wickets | 24 | 231 | 36.0 | v Warwickshire | Northampton | 2 Sep 2007 | List A | |
| 6 wickets | 20 | 325 | 46.4 | v Lancashire | Liverpool | 5 May 2017 | List A | |
| 6 wickets | 85 | 222 | 35.5 | v Glamorgan | Northampton | 12 Aug 2022 | List A | |
| 6 wickets | 146 | 199 | 25.4 | v Durham | Chester-le-Street | 13 Aug 2023 | List A | |
| 7 wickets | 118 | 98 | 35.2 | v Middlesex | Lord's | 1 May 1976 | List A | |
| 7 wickets | 14 | 188 | 52.4 | v Essex | Chelmsford | 14 May 1977 | List A | |
| 7 wickets | 47 | 144 | 47.1 | v Notts | Northampton | 11 Jun 1980 | List A | |
| 7 wickets | 41 | 203 | 53.1 | v Somerset | Northampton | 22 Jul 1981 | List A | |
| 7 wickets | 121 | 156 | 39.5 | v Ireland | Northampton | 3 Jul 1982 | List A | |
| 7 wickets | 113 | 136 | 36.1 | v Scotland | Northampton | 21 May 1983 | List A | |
| 7 wickets | 8 | 224 | 53.4 | v Hampshire | Southampton | 25 May 1993 | List A | |
| 7 wickets | 29 | 183 | 55.1 | v Ireland | Northampton | 21 Jun 1994 | List A | |
| 7 wickets | 36 | 260 | 54.0 | v Middlesex | Uxbridge | 6 Jul 1994 | List A | |
| 7 wickets | 19 | 268 | 56.5 | v Netherlands | Northampton | 27 Jun 1995 | List A | |
| 7 wickets | 29 | 206 | 45.1 | v Yorkshire | Northampton | 14 May 1996 | List A | |
| 7 wickets | 24 | 254 | 46.0 | v Yorkshire | Leeds | 27 May 1997 | List A | |
| 7 wickets | 73 | 146 | 27.5 | v Derbyshire | Derby | 7 Sep 1997 | List A | |
| 7 wickets | 4 | 247 | 39.2 | v Somerset | Taunton | 19 May 1998 | List A | |
| 7 wickets | - | 190 | 40.1 | v Somerset | Taunton | 16 Apr 2000 | List A | |
| 7 wickets | 10 | 188 | 43.2 | v Lancashire | Northampton | 4 Jun 2000 | List A | |
| 7 wickets | 50 | 180 | 36.4 | v Worcs | Northampton | 2 Aug 2000 | List A | |
| 7 wickets | 14 | 264 | 47.4 | v Warwickshire | Northampton | 4 May 2001 | List A | |
| 7 wickets | 103 | 144 | 27.5 | v Derbyshire | Northampton | 24 Jul 2002 | List A | |
| 7 wickets | 45 | 131 | 27.3 | v Somerset | Bath | 8 Jun 2003 | List A | |
| 7 wickets | 107 | 177 | 27.1 | v Lancashire | Manchester | 25 Jun 2004 | List A | |
| 7 wickets | 59 | 163 | 30.1 | v Leics | Northampton | 24 Apr 2011 | List A | |
| 7 wickets | 31 | 201 | 34.5 | v Hampshire | Southampton | 20 May 2011 | List A | |
| 7 wickets | 37 | 188 | 33.5 | v Worcs | Northampton | 24 Jun 2013 | List A | |
| 7 wickets | 48 | 273 | 42.0 | v Derbyshire | Northampton | 31 Jul 2016 | List A | |
| 8 wickets | 31 | 136 | 34.5 | v Worcs | Dudley | 9 May 1971 | List A | |
| 8 wickets | 65 | 142 | 44.1 | v Cambridge U | Cambridge | 3 Jun 1972 | List A | |
| 8 wickets | 25 | 209 | 50.5 | v MC East | Stoke-on-Trent | 22 May 1976 | List A | |
| 8 wickets | 26 | 181 | 55.4 | v Leics | Northampton | 8 Aug 1979 | List A | |
| 8 wickets | 66 | 172 | 44.0 | v Leics | Leicester | 17 May 1983 | List A | |
| 8 wickets | 62 | 209 | 49.4 | v Leics | Lord's | 5 Sep 1992 | List A | |
| 8 wickets | 49 | 219 | 41.5 | v Notts | Nottingham | 2 May 1997 | List A | |
| 8 wickets | 106 | 168 | 32.2 | v Durham CB | Chester-le-Street | 21 Jun 2000 | List A | |
| 8 wickets | 5 | 122 | 27.1 | v Leics | Northampton | 13 Aug 2000 | List A | |
| 8 wickets | 18 | 238 | 47.0 | v Glamorgan | Cardiff | 7 May 2001 | List A | |
| 8 wickets | 40 | 176 | 30.2 | v Surrey | Guildford | 22 Jul 2001 | List A | |
| 8 wickets | 143 | 123 | 26.1 | v Glamorgan | Northampton | 28 Apr 2002 | List A | |
| 8 wickets | 3 | 201 | 44.3 | v Middlesex | Shenley | 25 May 2003 | List A | |
| 8 wickets | 139 | 120 | 21.5 | v Scotland | Edinburgh | 26 Aug 2003 | List A | |
| 8 wickets | 76 | 152 | 32.2 | v Essex | Northampton | 6 Jun 2004 | List A | |
| 8 wickets | 199 | 57 | 16.5 | v Denmark | Brondby | 3 May 2005 | List A | |
| 8 wickets | 23 | 165 | 32.1 | v Glamorgan | Cardiff | 6 Sep 2006 | List A | |
| 8 wickets | 46 | 204 | 42.2 | v Ireland | Northampton | 5 May 2008 | List A | |
| 8 wickets | 147 | 135 | 15.3 | v Surrey | Northampton | 13 Sep 2009 | List A | |
| 8 wickets | 46 | 164 | 26.2 | v Unicorns | Wormsley | 29 Jul 2012 | List A | |
| 8 wickets | 3 | 178 | 27.3 | v Derbyshire | Northampton | 1 Aug 2021 | List A | |
| 9 wickets | 32 | 169 | 32.4 | v Sussex | Hove | 13 Jul 1969 | List A | |
| 9 wickets | 17 | 167 | 37.1 | v Middlesex | Wellingborough | 8 Aug 1971 | List A | |
| 9 wickets | 268 | 70 | 15.2 | v Herts | Northampton | 4 Aug 1976 | List A | |
| 9 wickets | 14 | 152 | 52.4 | v Comb Univ | Cambridge | 12 May 1979 | List A | |
| 9 wickets | 52 | 124 | 46.2 | v Worcs | Worcester | 30 May 1981 | List A | |
| 9 wickets | 62 | 208 | 44.4 | v Scotland | Glasgow | 13 May 1989 | List A | |
| 9 wickets | 79 | 256 | 46.5 | v Leics | Northampton | 11 Jul 1991 | List A | |
| 9 wickets | 210 | 136 | 25.0 | v Cheshire | Northampton | 25 Jun 1996 | List A | |
| 9 wickets | 57 | 161 | 30.3 | v Sussex | Hove | 27 Apr 1997 | List A | |
| 9 wickets | 23 | 206 | 36.1 | v Middlesex | Northampton | 21 Jun 1998 | List A | |
| 9 wickets | 52 | 278 | 41.2 | v Northants CB | Northampton | 27 Jun 2001 | List A | |
| 9 wickets | 216 | 83 | 14.0 | v Kent | Canterbury | 14 Aug 2024 | List A | |
| 10 wickets | 277 | 57 | 13.5 | v Leics | Leicester | 27 May 1964 | List A | |
| 10 wickets | 192 | 67 | 23.0 | v MC East | Horton | 7 May 1977 | List A |
By balls remaining in the second innings
Winner | Margin | Balls Rem | Target | Overs | Max | Opposition | Ground | Match Date | Scorecard |
| Northants | 6 wickets | - | 217 | 55.0 | 55.0 | v Yorkshire | Middlesbrough | 30 Apr 1977 | List A |
| Northants | 7 wickets | - | 190 | 40.1 | 40.1 | v Somerset | Taunton | 16 Apr 2000 | List A |
| Northants | 6 wickets | - | 197 | 34.0 | 34.0 | v Scotland | Northampton | 7 May 2007 | List A |
| 2 wickets | 1 | 216 | 59.5 | 60.0 | v Hampshire | Southampton | 18 Aug 1976 | List A | |
| 1 wicket | 1 | 187 | 59.5 | 60.0 | v Lancashire | Northampton | 19 Aug 1981 | List A | |
| 4 wickets | 1 | 218 | 54.5 | 55.0 | v Gloucs | Northampton | 11 May 1985 | List A | |
| 2 wickets | 1 | 280 | 49.5 | 50.0 | v Lancashire | Northampton | 23 May 2018 | List A | |
| 5 wickets | 2 | 276 | 54.4 | 55.0 | v Kent | Canterbury | 10 Jun 1987 | List A | |
| 4 wickets | 2 | 171 | 22.4 | 23.0 | v Hampshire | Northampton | 22 Jun 1997 | List A | |
| 4 wickets | 2 | 218 | 44.4 | 45.0 | v Sussex | Hove | 5 May 2003 | List A | |
| 5 wickets | 2 | 189 | 39.4 | 40.0 | v Kent | Northampton | 13 Aug 2013 | List A | |
| 3 wickets | 2 | 344 | 49.4 | 50.0 | v Essex | Northampton | 7 Aug 2022 | List A | |
| 4 wickets | 3 | 175 | 39.3 | 40.0 | v Glamorgan | Northampton | 4 Jul 1971 | List A | |
| 5 wickets | 3 | 295 | 44.3 | 45.0 | v Notts | Northampton | 4 May 2003 | List A | |
| 8 wickets | 3 | 201 | 44.3 | 45.0 | v Middlesex | Shenley | 25 May 2003 | List A | |
| 8 wickets | 3 | 178 | 27.3 | 28.0 | v Derbyshire | Northampton | 1 Aug 2021 | List A | |
| 2 wickets | 4 | 131 | 59.2 | 60.0 | v Gloucs | Bristol | 22 May 1965 | List A | |
| 2 wickets | 4 | 242 | 59.2 | 60.0 | v Gloucs | Bristol | 13 Jul 1977 | List A | |
| 7 wickets | 4 | 247 | 39.2 | 40.0 | v Somerset | Taunton | 19 May 1998 | List A | |
| 3 wickets | 5 | 239 | 59.1 | 60.0 | v Leics | Northampton | 1 Aug 1984 | List A | |
| 8 wickets | 5 | 122 | 27.1 | 28.0 | v Leics | Northampton | 13 Aug 2000 | List A | |
| 4 wickets | 5 | 208 | 44.1 | 45.0 | v Notts | Northampton | 28 Aug 2005 | List A | |
| 4 wickets | 5 | 201 | 39.1 | 40.0 | v Scotland | Northampton | 22 May 2011 | List A | |
| 1 wicket | 6 | 194 | 39.0 | 40.0 | v Somerset | Northampton | 20 Jul 1969 | List A | |
| 4 wickets | 6 | 218 | 49.0 | 50.0 | v Worcs | Worcester | 26 Apr 1996 | List A | |
| 5 wickets | 6 | 186 | 39.0 | 40.0 | v Durham | Northampton | 8 Sep 1997 | List A | |
| 4 wickets | 6 | 158 | 27.0 | 28.0 | v Warwickshire | Birmingham | 13 Aug 2006 | List A | |
| 5 wickets | 6 | 226 | 39.0 | 40.0 | v Hampshire | Northampton | 27 Aug 2007 | List A | |
| 4 wickets | 6 | 248 | 49.0 | 50.0 | v Somerset | Northampton | 3 Aug 2015 | List A | |
| 5 wickets | 7 | 112 | 38.5 | 40.0 | v Leics | Kettering | 22 Aug 1971 | List A | |
| 5 wickets | 7 | 212 | 58.5 | 60.0 | v Surrey | Northampton | 8 Jul 1987 | List A | |
| 4 wickets | 7 | 222 | 53.5 | 55.0 | v Warwickshire | Birmingham | 25 Apr 1989 | List A | |
| 5 wickets | 7 | 192 | 40.5 | 42.0 | v Indians | Luton | 21 May 1996 | List A | |
| 5 wickets | 7 | 189 | 39.5 | 41.0 | v Surrey | Northampton | 29 Aug 2004 | List A | |
| 4 wickets | 7 | 294 | 48.5 | 50.0 | v Warwickshire | Northampton | 27 Apr 2008 | List A | |
| 6 wickets | 8 | 174 | 38.4 | 40.0 | v Gloucs | Northampton | 24 Aug 1969 | List A | |
| 7 wickets | 8 | 224 | 53.4 | 55.0 | v Hampshire | Southampton | 25 May 1993 | List A | |
| 5 wickets | 8 | 141 | 38.4 | 40.0 | v Leics | Leicester | 18 Jul 1998 | List A | |
| 5 wickets | 8 | 226 | 43.4 | 45.0 | v Notts | Nottingham | 10 Aug 1999 | List A | |
| 3 wickets | 8 | 243 | 43.4 | 45.0 | v Sussex | Northampton | 6 Aug 2023 | List A | |
| 5 wickets | 9 | 207 | 38.3 | 40.0 | v Surrey | Northampton | 27 Jul 1997 | List A | |
| 4 wickets | 9 | 188 | 43.3 | 45.0 | v Leics | Leicester | 16 Jul 2000 | List A | |
| 4 wickets | 9 | 203 | 43.3 | 45.0 | v Somerset | Northampton | 12 Aug 2003 | List A | |
| 5 wickets | 9 | 173 | 38.3 | 40.0 | v Durham | Chester-le-Street | 1 May 2011 | List A | |
| 6 wickets | 10 | 156 | 38.2 | 40.0 | v Derbyshire | Chesterfield | 29 Jun 1969 | List A | |
| 5 wickets | 10 | 180 | 38.2 | 40.0 | v Leics | Northampton | 14 Sep 1997 | List A | |
| 4 wickets | 10 | 208 | 43.2 | 45.0 | v Surrey | The Oval | 25 Apr 1999 | List A | |
| 7 wickets | 10 | 188 | 43.2 | 45.0 | v Lancashire | Northampton | 4 Jun 2000 | List A | |
| 4 wickets | 10 | 227 | 43.2 | 45.0 | v Hampshire | Southampton | 30 May 2005 | List A | |
| 5 wickets | 10 | 216 | 43.2 | 45.0 | v Gloucs | Stowe | 19 Jun 2005 | List A | |
| 4 wickets | 11 | 196 | 58.1 | 60.0 | v Lancashire | Lord's | 4 Sep 1976 | List A | |
| 5 wickets | 11 | 154 | 43.1 | 45.0 | v Hampshire | Southampton | 18 Jul 2004 | List A | |
| 6 wickets | 12 | 233 | 48.0 | 50.0 | v Notts | Northampton | 7 May 1996 | List A | |
| 5 wickets | 12 | 282 | 48.0 | 50.0 | v Essex | Northampton | 23 Jun 1999 | List A | |
| 5 wickets | 13 | 287 | 57.5 | 60.0 | v Essex | Chelmsford | 7 Jul 1993 | List A | |
| 7 wickets | 14 | 188 | 52.4 | 55.0 | v Essex | Chelmsford | 14 May 1977 | List A | |
| 3 wickets | 14 | 152 | 57.4 | 60.0 | v Durham | Northampton | 29 Jun 1977 | List A | |
| 9 wickets | 14 | 152 | 52.4 | 55.0 | v Comb Univ | Cambridge | 12 May 1979 | List A | |
| 7 wickets | 14 | 264 | 47.4 | 50.0 | v Warwickshire | Northampton | 4 May 2001 | List A | |
| 6 wickets | 15 | 203 | 52.3 | 55.0 | v Warwickshire | Birmingham | 14 May 1980 | List A | |
| 5 wickets | 16 | 155 | 37.2 | 40.0 | v Notts | Nottingham | 2 Aug 1998 | List A | |
| 5 wickets | 16 | 157 | 42.2 | 45.0 | v Middlesex | Lord's | 22 Aug 1999 | List A | |
| 9 wickets | 17 | 167 | 37.1 | 40.0 | v Middlesex | Wellingborough | 8 Aug 1971 | List A | |
| 5 wickets | 18 | 211 | 57.0 | 60.0 | v Somerset | Taunton | 12 Jul 1989 | List A | |
| 8 wickets | 18 | 238 | 47.0 | 50.0 | v Glamorgan | Cardiff | 7 May 2001 | List A | |
| 5 wickets | 18 | 172 | 37.0 | 40.0 | v Derbyshire | Derby | 30 Aug 2010 | List A | |
| 6 wickets | 19 | 179 | 56.5 | 60.0 | v Lancashire | Northampton | 22 Jun 1993 | List A | |
| 7 wickets | 19 | 268 | 56.5 | 60.0 | v Netherlands | Northampton | 27 Jun 1995 | List A | |
| 4 wickets | 19 | 177 | 36.5 | 40.0 | v Netherlands | Northampton | 15 Aug 2013 | List A | |
| 6 wickets | 20 | 205 | 56.4 | 60.0 | v Essex | Chelmsford | 29 Jul 1987 | List A | |
| 6 wickets | 20 | 325 | 46.4 | 50.0 | v Lancashire | Liverpool | 5 May 2017 | List A | |
| 6 wickets | 23 | 198 | 51.1 | 55.0 | v Sussex | Eastbourne | 28 Apr 1979 | List A | |
| 9 wickets | 23 | 206 | 36.1 | 40.0 | v Middlesex | Northampton | 21 Jun 1998 | List A | |
| 3 wickets | 23 | 162 | 41.1 | 45.0 | v Yorkshire | Northampton | 8 Jul 2001 | List A | |
| 8 wickets | 23 | 165 | 32.1 | 36.0 | v Glamorgan | Cardiff | 6 Sep 2006 | List A | |
| 6 wickets | 24 | 239 | 56.0 | 60.0 | v Surrey | Northampton | 18 Jul 1979 | List A | |
| 7 wickets | 24 | 254 | 46.0 | 50.0 | v Yorkshire | Leeds | 27 May 1997 | List A | |
| 6 wickets | 24 | 231 | 36.0 | 40.0 | v Warwickshire | Northampton | 2 Sep 2007 | List A | |
| 8 wickets | 25 | 209 | 50.5 | 55.0 | v MC East | Stoke-on-Trent | 22 May 1976 | List A | |
| 3 wickets | 25 | 150 | 55.5 | 60.0 | v Warwickshire | Birmingham | 12 Aug 1992 | List A | |
| 8 wickets | 26 | 181 | 55.4 | 60.0 | v Leics | Northampton | 8 Aug 1979 | List A | |
| 5 wickets | 26 | 233 | 45.4 | 50.0 | v Warwickshire | Birmingham | 11 May 2008 | List A | |
| 7 wickets | 29 | 183 | 55.1 | 60.0 | v Ireland | Northampton | 21 Jun 1994 | List A | |
| 7 wickets | 29 | 206 | 45.1 | 50.0 | v Yorkshire | Northampton | 14 May 1996 | List A | |
| 8 wickets | 31 | 136 | 34.5 | 40.0 | v Worcs | Dudley | 9 May 1971 | List A | |
| 7 wickets | 31 | 201 | 34.5 | 40.0 | v Hampshire | Southampton | 20 May 2011 | List A | |
| 9 wickets | 32 | 169 | 32.4 | 38.0 | v Sussex | Hove | 13 Jul 1969 | List A | |
| 7 wickets | 36 | 260 | 54.0 | 60.0 | v Middlesex | Uxbridge | 6 Jul 1994 | List A | |
| 6 wickets | 36 | 197 | 39.0 | 45.0 | v Sussex | Eastbourne | 20 Aug 2000 | List A | |
| 7 wickets | 37 | 188 | 33.5 | 40.0 | v Worcs | Northampton | 24 Jun 2013 | List A | |
| 8 wickets | 40 | 176 | 30.2 | 37.0 | v Surrey | Guildford | 22 Jul 2001 | List A | |
| 7 wickets | 41 | 203 | 53.1 | 60.0 | v Somerset | Northampton | 22 Jul 1981 | List A | |
| 4 wickets | 41 | 182 | 37.1 | 44.0 | v Notts | Northampton | 2 Sep 2001 | List A | |
| 6 wickets | 43 | 141 | 57.5 | 65.0 | v Warwickshire | Northampton | 22 May 1963 | List A | |
| 7 wickets | 45 | 131 | 27.3 | 35.0 | v Somerset | Bath | 8 Jun 2003 | List A | |
| 8 wickets | 46 | 204 | 42.2 | 50.0 | v Ireland | Northampton | 5 May 2008 | List A | |
| 8 wickets | 46 | 164 | 26.2 | 34.0 | v Unicorns | Wormsley | 29 Jul 2012 | List A | |
| 7 wickets | 47 | 144 | 47.1 | 55.0 | v Notts | Northampton | 11 Jun 1980 | List A | |
| 4 wickets | 47 | 241 | 42.1 | 50.0 | v Gloucs | Cheltenham | 27 Jul 2014 | List A | |
| 7 wickets | 48 | 273 | 42.0 | 50.0 | v Derbyshire | Northampton | 31 Jul 2016 | List A | |
| 8 wickets | 49 | 219 | 41.5 | 50.0 | v Notts | Nottingham | 2 May 1997 | List A | |
| 6 wickets | 49 | 264 | 41.5 | 50.0 | v Ireland | Dublin | 30 May 2004 | List A | |
| 7 wickets | 50 | 180 | 36.4 | 45.0 | v Worcs | Northampton | 2 Aug 2000 | List A | |
| 9 wickets | 52 | 124 | 46.2 | 55.0 | v Worcs | Worcester | 30 May 1981 | List A | |
| 9 wickets | 52 | 278 | 41.2 | 50.0 | v Northants CB | Northampton | 27 Jun 2001 | List A | |
| 5 wickets | 52 | 146 | 31.2 | 40.0 | v Warwickshire | Birmingham | 29 Aug 2011 | List A | |
| 4 wickets | 54 | 216 | 41.0 | 50.0 | v Gloucs | Northampton | 17 Aug 2015 | List A | |
| 9 wickets | 57 | 161 | 30.3 | 40.0 | v Sussex | Hove | 27 Apr 1997 | List A | |
| 7 wickets | 59 | 163 | 30.1 | 40.0 | v Leics | Northampton | 24 Apr 2011 | List A | |
| 9 wickets | 62 | 208 | 44.4 | 55.0 | v Scotland | Glasgow | 13 May 1989 | List A | |
| 8 wickets | 62 | 209 | 49.4 | 60.0 | v Leics | Lord's | 5 Sep 1992 | List A | |
| 1 wicket | 64 | 129 | 39.2 | 50.0 | v Suffolk | Bury St Edmunds | 29 May 2002 | List A | |
| 8 wickets | 65 | 142 | 44.1 | 55.0 | v Cambridge U | Cambridge | 3 Jun 1972 | List A | |
| 8 wickets | 66 | 172 | 44.0 | 55.0 | v Leics | Leicester | 17 May 1983 | List A | |
| 6 wickets | 68 | 187 | 43.4 | 55.0 | v Comb Univ | Northampton | 4 May 1991 | List A | |
| 7 wickets | 73 | 146 | 27.5 | 40.0 | v Derbyshire | Derby | 7 Sep 1997 | List A | |
| 3 wickets | 74 | 145 | 42.4 | 55.0 | v Middlesex | Lord's | 4 May 1974 | List A | |
| 8 wickets | 76 | 152 | 32.2 | 45.0 | v Essex | Northampton | 6 Jun 2004 | List A | |
| 9 wickets | 79 | 256 | 46.5 | 60.0 | v Leics | Northampton | 11 Jul 1991 | List A | |
| 6 wickets | 81 | 147 | 31.3 | 45.0 | v Middlesex | Northampton | 19 May 2002 | List A | |
| 6 wickets | 85 | 186 | 40.5 | 55.0 | v Scotland | Northampton | 16 May 1985 | List A | |
| 6 wickets | 85 | 222 | 35.5 | 50.0 | v Glamorgan | Northampton | 12 Aug 2022 | List A | |
| 5 wickets | 94 | 136 | 39.2 | 55.0 | v Minor C | Slough | 3 May 1986 | List A | |
| 7 wickets | 103 | 144 | 27.5 | 45.0 | v Derbyshire | Northampton | 24 Jul 2002 | List A | |
| 5 wickets | 104 | 161 | 32.4 | 50.0 | v Scotland | Northampton | 5 May 1997 | List A | |
| 5 wickets | 106 | 104 | 32.2 | 50.0 | v Minor C | Luton | 29 Apr 1998 | List A | |
| 8 wickets | 106 | 168 | 32.2 | 50.0 | v Durham CB | Chester-le-Street | 21 Jun 2000 | List A | |
| 7 wickets | 107 | 177 | 27.1 | 45.0 | v Lancashire | Manchester | 25 Jun 2004 | List A | |
| 5 wickets | 110 | 175 | 31.4 | 50.0 | v Scotland | Forfar | 30 Apr 1996 | List A | |
| 7 wickets | 113 | 136 | 36.1 | 55.0 | v Scotland | Northampton | 21 May 1983 | List A | |
| 7 wickets | 118 | 98 | 35.2 | 55.0 | v Middlesex | Lord's | 1 May 1976 | List A | |
| 7 wickets | 121 | 156 | 39.5 | 60.0 | v Ireland | Northampton | 3 Jul 1982 | List A | |
| 8 wickets | 139 | 120 | 21.5 | 45.0 | v Scotland | Edinburgh | 26 Aug 2003 | List A | |
| 8 wickets | 143 | 123 | 26.1 | 50.0 | v Glamorgan | Northampton | 28 Apr 2002 | List A | |
| 6 wickets | 146 | 199 | 25.4 | 50.0 | v Durham | Chester-le-Street | 13 Aug 2023 | List A | |
| 8 wickets | 147 | 135 | 15.3 | 40.0 | v Surrey | Northampton | 13 Sep 2009 | List A | |
| 6 wickets | 156 | 130 | 39.0 | 65.0 | v Middlesex | Lord's | 12 Jun 1963 | List A | |
| 10 wickets | 192 | 67 | 23.0 | 55.0 | v MC East | Horton | 7 May 1977 | List A | |
| 8 wickets | 199 | 57 | 16.5 | 50.0 | v Denmark | Brondby | 3 May 2005 | List A | |
| 9 wickets | 210 | 136 | 25.0 | 60.0 | v Cheshire | Northampton | 25 Jun 1996 | List A | |
| 9 wickets | 216 | 83 | 14.0 | 50.0 | v Kent | Canterbury | 14 Aug 2024 | List A | |
| 9 wickets | 268 | 70 | 15.2 | 60.0 | v Herts | Northampton | 4 Aug 1976 | List A | |
| 10 wickets | 277 | 57 | 13.5 | 60.0 | v Leics | Leicester | 27 May 1964 | List A |
Tied matches
Team 1 | Team 2 | Ground | Match Date | Scorecard |
| Worcs | Northants | County Ground, New Road, Worcester | 5 Jul 1998 | List A |
| Northants | Australians | County Ground, Northampton | 7 Jun 2001 | List A |
| Northants | Essex | County Ground, Northampton | 16 Sep 2007 | List A |
| Northants | Warwickshire | County Ground, Northampton | 31 Aug 2009 | List A |
| Northants | Worcs | County Ground, Northampton | 3 May 2017 | List A |
Adjust:Most recentPast weekPast MonthPast year4 years10 years25 years
Records includes the following current or recent matches:
Northamptonshire vs Somerset at Taunton, One-Day Cup Group B, Aug 26, 2025 [List A]
Northamptonshire vs Middlesex at Northampton, One-Day Cup Group B, Aug 24, 2025 [List A]
Northamptonshire vs Kent at Northampton, One-Day Cup Group B, Aug 21, 2025 [List A]