Highest totals by Northamptonshire in T20s
Highest totals
Team | Score | Overs | RR | Inns | Opposition | Ground | Result | Match Date | Scorecard |
| 240/6 | 20.0 | 12.00 | 1 | v Bears | Birmingham | won | 13 Jul 2025 | Twenty20 | |
| 237/4 | 20.0 | 11.85 | 1 | v Yorkshire | Leeds | won | 30 May 2025 | Twenty20 | |
| 237/4 | 20.0 | 11.85 | 1 | v Derbyshire | Northampton | won | 11 Jul 2025 | Twenty20 | |
| 231/5 | 20.0 | 11.55 | 1 | v Bears | Birmingham | tied | 20 Jul 2018 | Twenty20 | |
| 227/1 | 20.0 | 11.35 | 1 | v Leics | Northampton | won | 1 Jun 2022 | Twenty20 | |
| 224/5 | 20.0 | 11.20 | 1 | v Gloucs | Milton Keynes | won | 22 Jun 2005 | Twenty20 | |
| 223/4 | 20.0 | 11.15 | 1 | v Durham | Northampton | won | 27 May 2022 | Twenty20 | |
| 222/3 | 20.0 | 11.10 | 2 | v Worcs | Kidderminster | lost | 29 Jun 2007 | Twenty20 | |
| 220/3 | 20.0 | 11.00 | 1 | v Worcs | Northampton | won | 9 Jun 2022 | Twenty20 | |
| 218/3 | 20.0 | 10.90 | 1 | v Leics | Northampton | lost | 4 Jul 2018 | Twenty20 | |
| 213/7 | 20.0 | 10.65 | 2 | v Leics | Leicester | lost | 1 Jul 2022 | Twenty20 | |
| 211/6 | 20.0 | 10.55 | 1 | v Bears | Northampton | lost | 22 Jun 2022 | Twenty20 | |
| 210/7 | 20.0 | 10.50 | 1 | v Leics | Leicester | won | 23 Jun 2023 | Twenty20 | |
| 208/5 | 20.0 | 10.40 | 1 | v Leics | Northampton | tied | 21 Jun 2024 | Twenty20 | |
| 207/5 | 20.0 | 10.35 | 2 | v Somerset | Taunton | lost | 15 Jul 2004 | Twenty20 | |
| 207/4 | 20.0 | 10.35 | 1 | v Glamorgan | Northampton | won | 22 Jun 2008 | Twenty20 | |
| 206/3 | 20.0 | 10.30 | 1 | v Gloucs | Cheltenham | won | 16 Jul 2013 | Twenty20 | |
| 203/6 | 18.4 | 10.87 | 2 | v Lancashire | Manchester | won | 19 Jul 2024 | Twenty20 | |
| 203/5 | 20.0 | 10.15 | 1 | v Durham | Chester-le-Street | lost | 18 Jul 2025 | Twenty20 | |
| 201/4 | 20.0 | 10.05 | 1 | v Somerset | Taunton | won | 11 Jun 2008 | Twenty20 | |
| 200/5 | 20.0 | 10.00 | 1 | v Warwickshire | Northampton | won | 19 Jul 2016 | Twenty20 | |
| 200/7 | 20.0 | 10.00 | 2 | v Notts | Northampton | lost | 13 Jun 2021 | Twenty20 | |
| 198/5 | 20.0 | 9.90 | 2 | v Somerset | Northampton | lost | 5 Sep 2024 | Twenty20 | |
| 197/7 | 19.4 | 10.01 | 2 | v Derbyshire | Northampton | won | 27 May 2016 | Twenty20 | |
| 197/7 | 20.0 | 9.85 | 2 | v Worcs | Northampton | lost | 5 Jun 2015 | Twenty20 | |
| 197/6 | 20.0 | 9.85 | 1 | v Bears | Northampton | won | 18 Jul 2024 | Twenty20 | |
| 195/8 | 20.0 | 9.75 | 1 | v Notts | Nottingham | lost | 22 Jul 2017 | Twenty20 | |
| 195/4 | 20.0 | 9.75 | 1 | v Worcs | Worcester | won | 5 Aug 2017 | Twenty20 | |
| 195/3 | 20.0 | 9.75 | 1 | v Glamorgan | Northampton | won | 29 May 2009 | Twenty20 | |
| 195/3 | 20.0 | 9.75 | 1 | v Durham | Chester-le-Street | lost | 25 Jul 2014 | Twenty20 | |
| 194/2 | 18.0 | 10.77 | 1 | v Surrey | Birmingham | won | 17 Aug 2013 | Twenty20 | |
| 194/6 | 20.0 | 9.70 | 1 | v Derbyshire | Derby | won | 4 Jun 2025 | Twenty20 | |
| 193/7 | 18.5 | 10.24 | 2 | v Bears | Birmingham | won | 20 Sep 2020 | Twenty20 | |
| 193/8 | 20.0 | 9.65 | 1 | v Derbyshire | Derby | lost | 14 Jun 2024 | Twenty20 | |
| 193/8 | 20.0 | 9.65 | 1 | v Worcs | Worcester | won | 26 Jun 2015 | Twenty20 | |
| 192/6 | 19.2 | 9.93 | 2 | v Derbyshire | Northampton | won | 11 Jul 2014 | Twenty20 | |
| 191/5 | 19.0 | 10.05 | 2 | v Somerset | Taunton | won | 2 Jul 2005 | Twenty20 | |
| 191/5 | 19.3 | 9.79 | 2 | v Somerset | Taunton | won | 5 Jul 2006 | Twenty20 | |
| 190/5 | 20.0 | 9.50 | 1 | v Worcs | Worcester | won | 6 Jun 2025 | Twenty20 | |
| 190/3 | 20.0 | 9.50 | 1 | v Worcs | Northampton | won | 3 Jul 2006 | Twenty20 | |
| 189/3 | 18.5 | 10.03 | 2 | v Worcs | Northampton | won | 30 Aug 2019 | Twenty20 | |
| 187/9 | 20.0 | 9.35 | 1 | v Worcs | Northampton | lost | 27 Jul 2018 | Twenty20 | |
| 186/7 | 20.0 | 9.30 | 1 | v Derbyshire | Derby | lost | 21 Jun 2022 | Twenty20 | |
| 184/6 | 20.0 | 9.20 | 1 | v Bears | Northampton | won | 11 Jun 2025 | Twenty20 | |
| 183/7 | 20.0 | 9.15 | 1 | v Leics | Leicester | lost | 12 Jul 2024 | Twenty20 | |
| 183/4 | 20.0 | 9.15 | 1 | v Durham | Northampton | won | 6 Aug 2013 | Twenty20 | |
| 182/4 | 20.0 | 9.10 | 1 | v Worcs | Northampton | won | 13 Jun 2008 | Twenty20 | |
| 181/8 | 20.0 | 9.05 | 2 | v Worcs | Northampton | lost | 24 May 2023 | Twenty20 | |
| 181/7 | 20.0 | 9.05 | 2 | v Bears | Northampton | lost | 31 May 2023 | Twenty20 | |
| 180 | 19.3 | 9.23 | 2 | v Derbyshire | Northampton | lost | 19 Jul 2018 | Twenty20 | |
| 180/4 | 19.4 | 9.15 | 2 | v Worcs | Worcester | won | 4 Jun 2023 | Twenty20 | |
| 180/6 | 20.0 | 9.00 | 1 | v Lancashire | Manchester | won | 8 Jun 2025 | Twenty20 | |
| 180/6 | 20.0 | 9.00 | 1 | v Yorkshire | Leeds | won | 20 Jun 2023 | Twenty20 | |
| 180/6 | 20.0 | 9.00 | 1 | v Worcs | Worcester | won | 27 Jun 2005 | Twenty20 | |
| 180/5 | 20.0 | 9.00 | 2 | v Yorkshire | Northampton | tied | 2 Jul 2010 | Twenty20 | |
| 180/5 | 20.0 | 9.00 | 1 | v Derbyshire | Northampton | lost | 2 Aug 2019 | Twenty20 | |
| 179/8 | 17.4 | 10.13 | 2 | v Leics | Northampton | won | 23 May 2014 | Twenty20 | |
| 179/3 | 18.2 | 9.76 | 2 | v Derbyshire | Derby | won | 8 Aug 2018 | Twenty20 | |
| 179/6 | 20.0 | 8.95 | 1 | v Derbyshire | Northampton | lost | 7 Jul 2017 | Twenty20 | |
| 177/8 | 20.0 | 8.85 | 2 | v Bears | Birmingham | lost | 18 Jul 2021 | Twenty20 | |
| 177/5 | 20.0 | 8.85 | 1 | v Notts | Northampton | won | 18 Jun 2023 | Twenty20 | |
| 177 | 20.0 | 8.85 | 1 | v Lancashire | Northampton | lost | 4 Jul 2025 | Twenty20 | |
| 176/6 | 20.0 | 8.80 | 1 | v Warwickshire | Northampton | won | 25 May 2009 | Twenty20 | |
| 174/6 | 20.0 | 8.70 | 1 | v Glamorgan | Northampton | won | 7 Jul 2006 | Twenty20 | |
| 173/5 | 20.0 | 8.65 | 1 | v Notts | Nottingham | lost | 27 Jun 2015 | Twenty20 | |
| 173/5 | 20.0 | 8.65 | 1 | v Durham | Northampton | won | 30 Jun 2021 | Twenty20 | |
| 171/3 | 18.1 | 9.41 | 2 | v Essex | Birmingham | won | 17 Aug 2013 | Twenty20 | |
| 171/4 | 18.2 | 9.32 | 2 | v Gloucs | Milton Keynes | won | 17 Jun 2008 | Twenty20 | |
| 171/7 | 20.0 | 8.55 | 1 | v Leics | Leicester | lost | 10 Jul 2025 | Twenty20 | |
| 171/6 | 20.0 | 8.55 | 1 | v Somerset | Northampton | won | 30 Aug 2020 | Twenty20 | |
| 170/4 | 20.0 | 8.50 | 1 | v Lancashire | Northampton | won | 15 Jul 2010 | Twenty20 | |
| 170/7 | 20.0 | 8.50 | 2 | v Warwickshire | Northampton | lost | 1 Aug 2017 | Twenty20 | |
| 170/7 | 20.0 | 8.50 | 2 | v Bears | Northampton | lost | 5 Aug 2018 | Twenty20 | |
| 170/7 | 20.0 | 8.50 | 2 | v Worcs | Northampton | lost | 15 Sep 2020 | Twenty20 | |
| 169/7 | 20.0 | 8.45 | 1 | v Worcs | Worcester | lost | 10 Jun 2016 | Twenty20 | |
| 169/5 | 20.0 | 8.45 | 1 | v Lancashire | Northampton | won | 19 Jun 2015 | Twenty20 | |
| 169/9 | 20.0 | 8.45 | 2 | v Lancashire | Northampton | lost | 16 Jun 2023 | Twenty20 | |
| 169/4 | 20.0 | 8.45 | 1 | v Worcs | Northampton | won | 7 Jun 2024 | Twenty20 | |
| 168/5 | 17.5 | 9.42 | 2 | v Leics | Leicester | won | 20 May 2016 | Twenty20 | |
| 168/2 | 18.5 | 8.92 | 2 | v Leics | Northampton | won | 2 Jun 2023 | Twenty20 | |
| 167/4 | 17.5 | 9.36 | 2 | v Derbyshire | Northampton | won | 11 Jun 2015 | Twenty20 | |
| 167/9 | 20.0 | 8.35 | 2 | v Warwickshire | Birmingham | lost | 10 Jul 2006 | Twenty20 | |
| 166/3 | 16.0 | 10.37 | 2 | v Sussex | Hove | won | 12 Aug 2015 | Twenty20 | |
| 166/4 | 18.0 | 9.22 | 1 | v Leics | Leicester | won | 18 Jun 2010 | Twenty20 | |
| 166/6 | 20.0 | 8.30 | 1 | v Somerset | Northampton | won | 20 Jun 2003 | Twenty20 | |
| 166/7 | 20.0 | 8.30 | 2 | v Leics | Northampton | lost | 20 Jun 2021 | Twenty20 | |
| 165/7 | 19.5 | 8.31 | 2 | v Yorkshire | Leeds | won | 16 May 2014 | Twenty20 | |
| 165/8 | 20.0 | 8.25 | 1 | v Leics | Leicester | won | 21 Jul 2017 | Twenty20 | |
| 165/9 | 20.0 | 8.25 | 2 | v Yorkshire | Northampton | lost | 13 Jun 2014 | Twenty20 | |
| 164/6 | 20.0 | 8.20 | 2 | v Warwickshire | Birmingham | lost | 6 Jul 2005 | Twenty20 | |
| 164/5 | 20.0 | 8.20 | 1 | v Durham | Northampton | won | 26 Jun 2010 | Twenty20 | |
| 163/7 | 20.0 | 8.15 | 2 | v Yorkshire | Northampton | lost | 29 Jul 2016 | Twenty20 | |
| 163/5 | 20.0 | 8.15 | 2 | v Derbyshire | Northampton | won | 30 May 2024 | Twenty20 | |
| 162/4 | 19.2 | 8.37 | 2 | v Durham | Chester-le-Street | won | 9 Jul 2017 | Twenty20 | |
| 162 | 19.5 | 8.16 | 1 | v Gloucs | Bristol | won | 3 Jun 2009 | Twenty20 | |
| 162/7 | 20.0 | 8.10 | 2 | v Warwickshire | Birmingham | lost | 26 Jun 2007 | Twenty20 | |
| 162/5 | 20.0 | 8.10 | 1 | v Gloucs | Bristol | won | 15 Jun 2008 | Twenty20 | |
| 162/5 | 20.0 | 8.10 | 1 | v Glamorgan | Northampton | lost | 2 Jul 2004 | Twenty20 | |
| 162/9 | 20.0 | 8.10 | 2 | v Durham | Northampton | lost | 10 Aug 2018 | Twenty20 | |
| 162/8 | 20.0 | 8.10 | 1 | v Yorkshire | Northampton | lost | 16 Aug 2018 | Twenty20 |
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