Highest totals by Glamorgan in T20s
Highest totals
Team | Score | Overs | RR | Inns | Opposition | Ground | Result | Match Date | Scorecard |
| 243/4 | 20.0 | 12.15 | 1 | v Somerset | Cardiff | won | 19 Jul 2024 | Twenty20 | |
| 240/3 | 20.0 | 12.00 | 1 | v Surrey | The Oval | won | 15 May 2015 | Twenty20 | |
| 238/3 | 20.0 | 11.90 | 1 | v Middlesex | Northwood | won | 31 May 2023 | Twenty20 | |
| 235/6 | 20.0 | 11.75 | 1 | v Sussex | Hove | won | 5 Jul 2024 | Twenty20 | |
| 224/5 | 20.0 | 11.20 | 2 | v Essex | Chelmsford | won | 16 Jul 2017 | Twenty20 | |
| 222/6 | 20.0 | 11.10 | 1 | v Surrey | The Oval | lost | 11 Jul 2025 | Twenty20 | |
| 220/6 | 20.0 | 11.00 | 1 | v Essex | Chelmsford | won | 12 Jun 2025 | Twenty20 | |
| 219/5 | 20.0 | 10.95 | 1 | v Sussex | Hove | won | 4 Jun 2023 | Twenty20 | |
| 216/5 | 20.0 | 10.80 | 1 | v Hampshire | Cardiff | won | 30 Aug 2019 | Twenty20 | |
| 206/6 | 20.0 | 10.30 | 2 | v Somerset | Taunton | lost | 11 Jul 2006 | Twenty20 | |
| 201/6 | 20.0 | 10.05 | 1 | v Gloucs | Cardiff | won | 3 Aug 2018 | Twenty20 | |
| 199/2 | 20.0 | 9.95 | 1 | v Kent | Canterbury | won | 30 Jul 2017 | Twenty20 | |
| 199/4 | 20.0 | 9.95 | 1 | v Middlesex | Cardiff | won | 3 Jun 2011 | Twenty20 | |
| 198/7 | 20.0 | 9.90 | 1 | v Essex | Cardiff | won | 7 Aug 2018 | Twenty20 | |
| 198/3 | 20.0 | 9.90 | 1 | v Sussex | Arundel | won | 9 Jul 2017 | Twenty20 | |
| 196/4 | 19.4 | 9.96 | 2 | v Worcs | Worcester | won | 20 Sep 2020 | Twenty20 | |
| 195/6 | 19.0 | 10.26 | 2 | v Surrey | The Oval | won | 31 Jul 2018 | Twenty20 | |
| 194/2 | 19.3 | 9.94 | 2 | v Somerset | Taunton | won | 5 Jul 2004 | Twenty20 | |
| 193/7 | 20.0 | 9.65 | 1 | v Somerset | Cardiff | lost | 18 Jun 2003 | Twenty20 | |
| 192/3 | 17.4 | 10.86 | 2 | v Essex | Chelmsford | won | 11 Jun 2010 | Twenty20 | |
| 192/4 | 20.0 | 9.60 | 1 | v Surrey | The Oval | won | 11 Jul 2014 | Twenty20 | |
| 191/3 | 17.0 | 11.23 | 2 | v Kent | Cardiff | won | 2 Jun 2023 | Twenty20 | |
| 191/3 | 20.0 | 9.55 | 1 | v Gloucs | Bristol | won | 12 Jun 2015 | Twenty20 | |
| 190/5 | 20.0 | 9.50 | 1 | v Kent | Canterbury | won | 3 Jul 2022 | Twenty20 | |
| 190/5 | 20.0 | 9.50 | 1 | v Gloucs | Cardiff | lost | 10 Jul 2006 | Twenty20 | |
| 189/6 | 20.0 | 9.45 | 1 | v Gloucs | Bristol | won | 15 Jun 2025 | Twenty20 | |
| 189/6 | 20.0 | 9.45 | 1 | v Essex | Chelmsford | lost | 23 May 2014 | Twenty20 | |
| 188/4 | 20.0 | 9.40 | 1 | v Gloucs | Cardiff | won | 18 Sep 2020 | Twenty20 | |
| 187/4 | 19.3 | 9.58 | 2 | v Middlesex | Richmond | won | 3 Jul 2014 | Twenty20 | |
| 186/5 | 20.0 | 9.30 | 2 | v Sussex | Hove | lost | 23 Jun 2010 | Twenty20 | |
| 186/5 | 20.0 | 9.30 | 2 | v Worcs | Worcester | lost | 6 Jul 2005 | Twenty20 | |
| 186/9 | 20.0 | 9.30 | 2 | v Somerset | Cardiff | won | 30 Jun 2006 | Twenty20 | |
| 185/4 | 19.0 | 9.73 | 2 | v Essex | Cardiff | won | 6 Jun 2025 | Twenty20 | |
| 185/7 | 20.0 | 9.25 | 2 | v Essex | Chelmsford | lost | 2 Jul 2022 | Twenty20 | |
| 184/5 | 20.0 | 9.20 | 1 | v Essex | Chelmsford | n/r | 29 Jul 2016 | Twenty20 | |
| 184/9 | 20.0 | 9.20 | 1 | v Middlesex | Cardiff | won | 18 Jul 2025 | Twenty20 | |
| 184/4 | 20.0 | 9.20 | 1 | v Hampshire | Southampton | lost | 18 Jul 2021 | Twenty20 | |
| 183/6 | 20.0 | 9.15 | 1 | v Somerset | Taunton | won | 13 Aug 2017 | Twenty20 | |
| 183/8 | 20.0 | 9.15 | 2 | v Northants | Northampton | lost | 22 Jun 2008 | Twenty20 | |
| 183/8 | 20.0 | 9.15 | 2 | v Somerset | Cardiff | won | 22 Jun 2005 | Twenty20 | |
| 183/8 | 20.0 | 9.15 | 1 | v Surrey | Cardiff | lost | 17 Aug 2018 | Twenty20 | |
| 183/5 | 20.0 | 9.15 | 1 | v Gloucs | Cardiff | won | 18 Jun 2023 | Twenty20 | |
| 183/7 | 20.0 | 9.15 | 1 | v Sussex | Cardiff | won | 2 Jun 2024 | Twenty20 | |
| 182/8 | 20.0 | 9.10 | 2 | v Gloucs | Bristol | lost | 24 Jun 2021 | Twenty20 | |
| 182/8 | 20.0 | 9.10 | 1 | v Essex | Cardiff | won | 7 Jul 2024 | Twenty20 | |
| 181/6 | 20.0 | 9.05 | 1 | v Surrey | The Oval | won | 4 Aug 2017 | Twenty20 | |
| 181/9 | 20.0 | 9.05 | 2 | v Somerset | Taunton | lost | 12 Aug 2018 | Twenty20 | |
| 181/7 | 20.0 | 9.05 | 2 | v Surrey | Cardiff | lost | 31 May 2024 | Twenty20 | |
| 181/7 | 20.0 | 9.05 | 1 | v Hampshire | Southampton | won | 3 Jul 2015 | Twenty20 | |
| 180/5 | 20.0 | 9.00 | 1 | v Somerset | Cardiff | lost | 18 Jul 2019 | Twenty20 | |
| 179/7 | 20.0 | 8.95 | 1 | v Kent | Tunbridge Wells | won | 17 Jul 2015 | Twenty20 | |
| 179/5 | 20.0 | 8.95 | 2 | v Sussex | Cardiff | won | 30 May 2014 | Twenty20 | |
| 178/5 | 20.0 | 8.90 | 1 | v Somerset | Taunton | lost | 22 Jun 2012 | Twenty20 | |
| 177/7 | 18.2 | 9.65 | 2 | v Middlesex | Lord's | won | 6 Jun 2024 | Twenty20 | |
| 177/7 | 20.0 | 8.85 | 1 | v Kent | Cardiff | tied | 13 Jun 2014 | Twenty20 | |
| 176/3 | 20.0 | 8.80 | 1 | v Somerset | Taunton | won | 6 Jun 2014 | Twenty20 | |
| 176/7 | 20.0 | 8.80 | 1 | v Somerset | Taunton | won | 4 Jul 2025 | Twenty20 | |
| 176/5 | 20.0 | 8.80 | 1 | v Gloucs | Bristol | won | 25 Jul 2017 | Twenty20 | |
| 175/4 | 16.0 | 10.93 | 1 | v Kent | Cardiff | won | 17 Jun 2016 | Twenty20 | |
| 175 | 18.3 | 9.45 | 2 | v Essex | Cardiff | lost | 9 Jun 2023 | Twenty20 | |
| 175/6 | 20.0 | 8.75 | 1 | v Essex | Chelmsford | lost | 16 Jun 2023 | Twenty20 | |
| 175/9 | 20.0 | 8.75 | 2 | v Gloucs | Cardiff | lost | 10 Jun 2021 | Twenty20 | |
| 174/4 | 18.2 | 9.49 | 2 | v Warwickshire | Birmingham | won | 28 Jun 2006 | Twenty20 | |
| 174/5 | 20.0 | 8.70 | 2 | v Somerset | Taunton | lost | 29 Jun 2007 | Twenty20 | |
| 174/4 | 20.0 | 8.70 | 1 | v Sussex | Cardiff | lost | 26 Aug 2019 | Twenty20 | |
| 173/5 | 20.0 | 8.65 | 1 | v Surrey | The Oval | lost | 27 May 2022 | Twenty20 | |
| 173/7 | 20.0 | 8.65 | 1 | v Somerset | Taunton | lost | 3 Jun 2022 | Twenty20 | |
| 173/5 | 20.0 | 8.65 | 1 | v Warwickshire | Birmingham | won | 8 Jul 2012 | Twenty20 | |
| 173/4 | 20.0 | 8.65 | 1 | v Sussex | Cardiff | lost | 8 Jul 2018 | Twenty20 | |
| 172/2 | 14.2 | 12.00 | 2 | v Middlesex | Cardiff | won | 21 Jun 2022 | Twenty20 | |
| 172/4 | 18.5 | 9.13 | 2 | v Gloucs | Bristol | won | 10 Jun 2016 | Twenty20 | |
| 172 | 18.5 | 9.13 | 2 | v Sussex | Cardiff | lost | 14 Jun 2025 | Twenty20 | |
| 172/5 | 19.3 | 8.82 | 2 | v Surrey | The Oval | won | 4 Jul 2010 | Twenty20 | |
| 172/5 | 20.0 | 8.60 | 1 | v Gloucs | Cardiff | tied | 1 Aug 2019 | Twenty20 | |
| 171/5 | 17.2 | 9.86 | 1 | v Somerset | Cardiff | n/r | 15 Jul 2017 | Twenty20 | |
| 171 | 19.3 | 8.76 | 1 | v Somerset | Cardiff | lost | 21 Jun 2023 | Twenty20 | |
| 171 | 19.4 | 8.69 | 2 | v Essex | Chelmsford | lost | 19 Jun 2015 | Twenty20 | |
| 171/8 | 20.0 | 8.55 | 2 | v Essex | Chelmsford | won | 13 Jul 2018 | Twenty20 | |
| 171/8 | 20.0 | 8.55 | 2 | v Surrey | Cardiff | lost | 7 Jun 2023 | Twenty20 | |
| 170/5 | 20.0 | 8.50 | 2 | v Somerset | Taunton | lost | 17 Jun 2008 | Twenty20 | |
| 170/4 | 20.0 | 8.50 | 1 | v Somerset | Taunton | won | 28 Jun 2015 | Twenty20 | |
| 170/7 | 20.0 | 8.50 | 2 | v Warwickshire | Birmingham | lost | 24 Jun 2007 | Twenty20 | |
| 170/4 | 20.0 | 8.50 | 1 | v Worcs | Cardiff | won | 23 Jun 2003 | Twenty20 | |
| 170/5 | 20.0 | 8.50 | 1 | v Somerset | Cardiff | won | 13 Jun 2008 | Twenty20 | |
| 170/8 | 20.0 | 8.50 | 1 | v Middlesex | Radlett | lost | 27 Jun 2021 | Twenty20 | |
| 169/5 | 20.0 | 8.45 | 1 | v Middlesex | Cardiff | won | 5 Jun 2015 | Twenty20 | |
| 168 | 18.4 | 9.00 | 2 | v Sussex | Cardiff | lost | 2 Jul 2021 | Twenty20 | |
| 168/7 | 20.0 | 8.40 | 2 | v Gloucs | Bristol | lost | 24 Jun 2003 | Twenty20 | |
| 168/6 | 20.0 | 8.40 | 1 | v Hampshire | Southampton | won | 6 Jul 2018 | Twenty20 | |
| 168 | 20.0 | 8.40 | 1 | v Middlesex | Radlett | lost | 29 May 2022 | Twenty20 | |
| 167/3 | 18.5 | 8.86 | 2 | v Middlesex | Cardiff | won | 26 Jun 2010 | Twenty20 | |
| 167/7 | 20.0 | 8.35 | 1 | v Surrey | The Oval | n/r | 10 Jun 2011 | Twenty20 | |
| 167/9 | 20.0 | 8.35 | 2 | v Gloucs | Cheltenham | lost | 27 Jul 2018 | Twenty20 | |
| 166/5 | 19.1 | 8.66 | 2 | v Northants | Northampton | won | 2 Jul 2004 | Twenty20 | |
| 166/8 | 20.0 | 8.30 | 1 | v Surrey | The Oval | lost | 14 Jun 2021 | Twenty20 | |
| 166/8 | 20.0 | 8.30 | 1 | v Somerset | Taunton | lost | 26 Jun 2011 | Twenty20 | |
| 166/8 | 20.0 | 8.30 | 1 | v Essex | Chelmsford | lost | 7 Jun 2024 | Twenty20 | |
| 166/6 | 20.0 | 8.30 | 1 | v Gloucs | Cardiff | won | 27 May 2009 | Twenty20 | |
| 165/9 | 20.0 | 8.25 | 2 | v Warwickshire | Birmingham | lost | 30 Jun 2005 | Twenty20 | |
| 164/3 | 19.1 | 8.55 | 2 | v Worcs | Cardiff | won | 27 Jun 2006 | Twenty20 |
Adjust:Most recentPast weekPast MonthPast year4 years10 years25 years
Records includes the following current or recent matches:
Perth Scorchers vs Adelaide Strikers at Adelaide, Big Bash League , Dec 31, 2013 [Twenty20]
Prime Bank Cricket Club vs UCB-BCB Eleven at Mirpur, Victory Day T20 Cup Final, Dec 31, 2013 [Twenty20]
Melbourne Renegades vs Brisbane Heat at Melbourne (Docklands), Big Bash League , Dec 30, 2013 [Twenty20]