Highest totals by Middlesex in List A
Highest totals
Team | Score | Overs | RR | Inns | Opposition | Ground | Result | Match Date | Scorecard |
| 390/5 | 48.0 | 8.12 | 2 | v Durham | Chester-le-Street | won | 13 Aug 2025 | List A | |
| 380/5 | 50.0 | 7.60 | 1 | v Kent | Canterbury | won | 7 May 2019 | List A | |
| 374/3 | 50.0 | 7.48 | 1 | v Warwickshire | Radlett | won | 19 Aug 2022 | List A | |
| 367/6 | 50.0 | 7.34 | 1 | v Sussex | Hove | won | 3 Aug 2015 | List A | |
| 366/8 | 50.0 | 7.32 | 1 | v Essex | Chelmsford | won | 19 Apr 2019 | List A | |
| 365 | 50.0 | 7.30 | 1 | v Notts | Radlett | won | 15 Aug 2023 | List A | |
| 364/6 | 50.0 | 7.28 | 1 | v Somerset | Radlett | won | 1 May 2019 | List A | |
| 355 | 49.4 | 7.14 | 1 | v Notts | Grantham | won | 12 Aug 2022 | List A | |
| 351/7 | 50.0 | 7.02 | 1 | v Surrey | Radlett | won | 10 Aug 2022 | List A | |
| 350/6 | 40.0 | 8.75 | 1 | v Lancashire | Lord's | won | 10 Jun 2012 | List A | |
| 344/9 | 50.0 | 6.88 | 2 | v Leics | Radlett | lost | 4 Aug 2022 | List A | |
| 341/7 | 50.0 | 6.82 | 1 | v Somerset | Lord's | lost | 17 May 2009 | List A | |
| 341/5 | 50.0 | 6.82 | 1 | v Sussex | Lord's | n/r | 27 Apr 2017 | List A | |
| 337/5 | 45.0 | 7.48 | 1 | v Somerset | Southgate | won | 13 Jul 2003 | List A | |
| 336/9 | 49.2 | 6.81 | 2 | v Somerset | Taunton | won | 14 Aug 2022 | List A | |
| 333/4 | 45.0 | 7.40 | 1 | v Gloucs | Southgate | lost | 17 Jul 2005 | List A | |
| 330/8 | 50.0 | 6.60 | 2 | v Sussex | Hove | lost | 12 Aug 2021 | List A | |
| 325/5 | 55.0 | 5.90 | 1 | v Leics | Leicester | won | 2 May 1992 | List A | |
| 322/5 | 50.0 | 6.44 | 1 | v Kent | Canterbury | won | 11 May 2009 | List A | |
| 322/3 | 50.0 | 6.44 | 1 | v Gloucs | Bristol | won | 6 Jun 2018 | List A | |
| 319/5 | 48.1 | 6.62 | 2 | v Northants | Radlett | won | 29 Jul 2024 | List A | |
| 315/6 | 50.0 | 6.30 | 1 | v Surrey | The Oval | won | 20 Apr 2008 | List A | |
| 314/5 | 45.0 | 6.97 | 1 | v Notts | Southgate | won | 19 Jun 2005 | List A | |
| 313/9 | 50.0 | 6.26 | 1 | v Kent | Radlett | won | 20 May 2018 | List A | |
| 309/7 | 50.0 | 6.18 | 1 | v Hampshire | Southampton | lost | 1 Aug 2023 | List A | |
| 304/6 | 50.0 | 6.08 | 1 | v Glamorgan | Cardiff | won | 23 May 2018 | List A | |
| 304/7 | 60.0 | 5.06 | 1 | v Surrey | The Oval | won | 12 Jul 1995 | List A | |
| 304/8 | 60.0 | 5.06 | 1 | v Cornwall | St Austell | won | 27 Jun 1995 | List A | |
| 303/7 | 55.0 | 5.50 | 1 | v Northants | Northampton | won | 21 May 1977 | List A | |
| 302/5 | 41.0 | 7.36 | 1 | v Worcs | Worcester | won | 1 Aug 2021 | List A | |
| 302/7 | 50.0 | 6.04 | 1 | v Scotland | Lord's | won | 26 Apr 2009 | List A | |
| 300/4 | 45.0 | 6.66 | 1 | v Notts | Lord's | won | 17 Aug 2003 | List A | |
| 299/8 | 40.0 | 7.47 | 1 | v Gloucs | Cheltenham | lost | 8 Aug 2010 | List A | |
| 296/9 | 50.0 | 5.92 | 1 | v Somerset | Taunton | lost | 26 Jul 2016 | List A | |
| 296/5 | 50.0 | 5.92 | 1 | v Essex | Colchester | lost | 5 Aug 2015 | List A | |
| 296/4 | 60.0 | 4.93 | 1 | v Lancashire | Manchester | lost | 15 Aug 1990 | List A | |
| 295 | 48.5 | 6.04 | 2 | v Essex | Chelmsford | lost | 11 Aug 2023 | List A | |
| 295 | 50.0 | 5.90 | 1 | v Hampshire | Southampton | won | 3 May 2017 | List A | |
| 295/8 | 50.0 | 5.90 | 1 | v Hampshire | Radlett | lost | 7 Jun 2016 | List A | |
| 294/7 | 50.0 | 5.88 | 1 | v Glamorgan | Cardiff | won | 14 Jun 2016 | List A | |
| 294/7 | 60.0 | 4.90 | 1 | v Shropshire | Telford | won | 24 Jun 1992 | List A | |
| 293 | 49.3 | 5.91 | 2 | v Lancashire | Lord's | lost | 20 Aug 2023 | List A | |
| 292/4 | 44.5 | 6.51 | 2 | v Surrey | Lord's | won | 31 Jul 2014 | List A | |
| 292/9 | 49.5 | 5.85 | 2 | v Lancashire | Manchester | won | 26 Aug 2025 | List A | |
| 291/5 | 50.0 | 5.82 | 1 | v Essex | Chelmsford | lost | 24 May 2002 | List A | |
| 291/5 | 59.4 | 4.87 | 2 | v Surrey | Uxbridge | won | 11 Jul 1990 | List A | |
| 289/5 | 47.3 | 6.08 | 2 | v Glamorgan | Lord's | won | 5 May 2019 | List A | |
| 289/7 | 50.0 | 5.78 | 1 | v Somerset | Radlett | lost | 6 Aug 2025 | List A | |
| 288 | 40.0 | 7.20 | 1 | v Essex | Lord's | won | 27 Aug 2012 | List A | |
| 288/6 | 45.0 | 6.40 | 2 | v Sussex | Arundel | lost | 18 Jul 1999 | List A | |
| 288/4 | 50.0 | 5.76 | 1 | v Sussex | Hove | won | 25 May 2018 | List A | |
| 287/4 | 42.2 | 6.77 | 2 | v Gloucs | Lord's | won | 21 Apr 2019 | List A | |
| 286/5 | 40.0 | 7.15 | 1 | v Netherlands | Lord's | won | 1 May 2011 | List A | |
| 284/8 | 45.0 | 6.31 | 2 | v Northants | Northampton | won | 12 Jun 2005 | List A | |
| 284/9 | 45.0 | 6.31 | 1 | v Glamorgan | Cardiff | won | 20 Jul 2005 | List A | |
| 284 | 48.5 | 5.81 | 2 | v Lancashire | Lord's | lost | 10 May 2019 | List A | |
| 284/5 | 50.0 | 5.68 | 1 | v Kent | Lord's | won | 25 Jun 2006 | List A | |
| 283/4 | 45.0 | 6.28 | 2 | v Kent | Radlett | won | 19 Aug 2025 | List A | |
| 283/5 | 50.0 | 5.66 | 1 | v Sussex | Lord's | won | 29 Apr 1998 | List A | |
| 283/9 | 60.0 | 4.71 | 1 | v Cumberland | Uxbridge | won | 3 Jul 1985 | List A | |
| 282/6 | 55.0 | 5.12 | 2 | v Sussex | Hove | won | 8 May 1990 | List A | |
| 282/6 | 55.0 | 5.12 | 1 | v Somerset | Taunton | won | 17 May 1980 | List A | |
| 280/4 | 50.0 | 5.60 | 1 | v Scotland | Edinburgh | won | 14 May 2009 | List A | |
| 280/5 | 55.0 | 5.09 | 1 | v Sussex | Hove | won | 14 May 1985 | List A | |
| 280/6 | 59.3 | 4.70 | 2 | v Gloucs | Uxbridge | won | 9 Jul 1997 | List A | |
| 280/8 | 60.0 | 4.66 | 1 | v Sussex | Lord's | won | 23 Jun 1965 | List A | |
| 278/4 | 44.5 | 6.20 | 2 | v Hampshire | Lord's | won | 14 Sep 2003 | List A | |
| 278/4 | 45.0 | 6.17 | 1 | v Lancashire | Manchester | lost | 19 Aug 2003 | List A | |
| 278/6 | 49.3 | 5.61 | 2 | v Warwickshire | Lord's | won | 18 May 2009 | List A | |
| 278/6 | 50.0 | 5.56 | 1 | v Hrford | Kingsland | lost | 27 Jun 2001 | List A | |
| 277 | 49.2 | 5.61 | 1 | v Surrey | The Oval | won | 25 Apr 2019 | List A | |
| 277/7 | 50.0 | 5.54 | 1 | v Essex | Chelmsford | lost | 20 May 2007 | List A | |
| 277/6 | 50.0 | 5.54 | 1 | v Wales MC | Lamphey | won | 5 May 2004 | List A | |
| 276/8 | 55.0 | 5.01 | 1 | v Comb Univ | Lord's | won | 16 May 1995 | List A | |
| 276/8 | 60.0 | 4.60 | 1 | v Lancashire | Lord's | won | 1 Aug 1984 | List A | |
| 275/6 | 38.2 | 7.17 | 2 | v Leics | Lord's | won | 26 Aug 2013 | List A | |
| 274/8 | 45.0 | 6.08 | 1 | v Surrey | Croydon | won | 6 Aug 2002 | List A | |
| 274/5 | 50.0 | 5.48 | 1 | v Notts | Lord's | won | 21 Jun 2000 | List A | |
| 273/6 | 45.0 | 6.06 | 1 | v Yorkshire | Southgate | won | 1 Aug 2004 | List A | |
| 273/5 | 50.0 | 5.46 | 1 | v Australians | Lord's | lost | 19 Jun 2010 | List A | |
| 273/5 | 50.0 | 5.46 | 1 | v Sussex | Hove | lost | 5 May 2008 | List A | |
| 273/6 | 55.0 | 4.96 | 1 | v Surrey | The Oval | won | 7 May 1983 | List A | |
| 271/1 | 41.4 | 6.50 | 2 | v Durham | Chester-le-Street | won | 7 Aug 2022 | List A | |
| 270 | 54.2 | 4.96 | 1 | v Somerset | Lord's | won | 16 May 1987 | List A | |
| 270/9 | 60.0 | 4.50 | 1 | v Lancashire | Manchester | lost | 14 Jul 1976 | List A | |
| 270/8 | 60.0 | 4.50 | 1 | v Cumberland | Carlisle | won | 25 Jun 1996 | List A | |
| 269 | 59.0 | 4.55 | 1 | v Bucks | Lord's | won | 23 Apr 1965 | List A | |
| 267/4 | 60.0 | 4.45 | 1 | v Bucks | Lord's | won | 25 Jun 1975 | List A | |
| 267/7 | 60.0 | 4.45 | 1 | v Hampshire | Southampton | won | 16 Aug 1989 | List A | |
| 266 | 49.2 | 5.39 | 2 | v Hampshire | Southampton | lost | 23 May 2009 | List A | |
| 266 | 49.4 | 5.35 | 1 | v Derbyshire | Derby | lost | 27 Jul 2024 | List A | |
| 266/3 | 60.0 | 4.43 | 1 | v Sussex | Lord's | won | 2 Aug 1989 | List A | |
| 263 | 39.3 | 6.65 | 1 | v Kent | Canterbury | lost | 16 Aug 2011 | List A | |
| 263/4 | 45.0 | 5.84 | 1 | v Lancashire | Manchester | won | 18 Sep 2005 | List A | |
| 263 | 49.2 | 5.33 | 1 | v Glamorgan | Lord's | lost | 7 May 1996 | List A | |
| 262/8 | 50.0 | 5.24 | 1 | v Glamorgan | Lord's | won | 29 Apr 2007 | List A | |
| 262/8 | 50.0 | 5.24 | 2 | v Sussex | Lord's | lost | 13 Jun 2007 | List A | |
| 262/3 | 59.0 | 4.44 | 2 | v Northants | Northampton | won | 25 Jun 1986 | List A | |
| 260/6 | 44.0 | 5.90 | 2 | v Derbyshire | Derby | won | 3 Aug 2003 | List A | |
| 260/4 | 46.1 | 5.63 | 2 | v Glamorgan | Lord's | won | 29 May 2004 | List A |
Adjust:Most recentPast weekPast MonthPast year4 years10 years25 years
Records includes the following current or recent matches:
Hampshire vs Middlesex at Radlett, One-Day Cup Quarter Final, Aug 28, 2025 [List A]
Lancashire vs Middlesex at Manchester, 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]