The T20 Blast 2023 got underway on May 20, with the summit clash slated to be played at Edgbaston in Birmingham on July 15. Defending champions Hampshire Hawks clinched their record-equalling third title in the previous edition and will be gunning to do one better in the ongoing season to successfully defend their title.
As per the T20 Blast 2023 Schedule, as many as 133 matches will be played - 126 fixtures in the group stage followed by seven knockout games. Following the conclusion of the group stage on July 2, the quarter-finals of the event will commence on July 6, with the semi-final and final to be played on the same day.
The 18 participating teams are spilt into two groups, with nine teams each that constitute the North and South Divisions. Each county will play seven home and as many away matches. Eventually the top four sides of each group of the T20 Blast 2023 Points Table will cement their berths in the knockout rounds.
Birmingham Bears, Derbyshire Falcons, Durham, Lancashire Lightning, Leicestershire Foxes, Northamptonshire Steelbacks, Notts Outlaws, Worcestershire Rapids, and Yorkshire Vikings are part of the North Division whereas South Division comprises of Essex Eagles, Glamorgan, Gloucestershire, Hampshire Hawks, Kent Spitfires, Middlesex, Somerset, Surrey, and Sussex Sharks.
Since the inception of the top-tier league in 2003, Leicestershire Foxes and Hampshire Hawks have the most titles with three each. On the other hand, Notts Outlaws, Northants Steelbacks, and Kent Spitfires have won two trophies each.
| Season | Winner | Runner-up | Winning Margin | Venue |
| 2003 | Surrey Lions | Warwickshire Bears | Won by 9 wickets | Trent Bridge, Nottingham |
| 2004 | Leicestershire Foxes | Surrey Lions | Won by 7 wickets | Edgbaston, Birmingham |
| 2005 | Somerset Sabres | Lancashire Lightning | Won by 7 wickets | The Oval, London |
| 2006 | Leicestershire Foxes | Notts Outlaws | Won by 4 runs | Trent Bridge, Nottingham |
| 2007 | Kent Spitfires | Gloucestershire Gladiators | Won by 4 wickets | Edgbaston, Birmingham |
| 2008 | Middlesex Crusaders | Kent Spitfires | Won by 3 runs | Rose Bowl, Southampton |
| 2009 | Sussex Sharks | Somerset Sabres | Won by 63 runs | Edgbaston, Birmingham |
| 2010 | Hampshire Royals | Somerset | Won by losing fewer wickets (scores level) | Rose Bowl, Southampton |
| 2011 | Leicestershire Foxes | Somerset | Won by 18 runs | Edgbaston, Birmingham |
| 2012 | Hampshire Royals | Yorkshire Carnegie | Won by 10 runs | Sophia Gardens, Cardiff |
| 2013 | Northants Steelbacks | Surrey | Won by 102 runs (D/L) | Edgbaston, Birmingham |
| 2014 | Birmingham Bears (Warwickshire) | Lancashire Lightning | Won by 4 runs | Edgbaston, Birmingham |
| 2015 | Lancashire Lightning | Northants Steelbacks | Won by 13 runs | Edgbaston, Birmingham |
| 2016 | Northants Steelbacks | Durham Jets | Won by 4 wickets | Edgbaston, Birmingham |
| 2017 | Notts Outlaws | Birmingham Bears (Warwickshire) | Won by 22 runs | Edgbaston, Birmingham |
| 2018 | Worcestershire Rapids | Sussex Sharks | Won by 5 wickets | Edgbaston, Birmingham |
| 2019 | Essex Eagles | Worcestershire Rapids | Won by 4 wickets | Edgbaston, Birmingham |
| 2020 | Notts Outlaws | Surrey | Won by 6 wickets | Edgbaston, Birmingham |
| 2021 | Kent Spitfires | Somerset | Won by 25 runs | Edgbaston, Birmingham |
| 2022 | Hampshire Hawks | Lancashire Lightning | Won by 1 run | Edgbaston, Birmingham |
| 2023 | - | - | - | - |
| T20 Blast Team | T20 Blast Titles | T20 Blast Title-winning seasons |
| Leicestershire Foxes | 3 | 2004, 2006, 2011 |
| Hampshire Hawks | 3 | 2010, 2012, 2022 |
| Kent Spitfires | 2 | 2007, 2021 |
| Northants Steelbacks | 2 | 2013, 2016 |
| Notts Outlaws | 2 | 2017, 2020 |
| Essex Eagles | 1 | 2019 |
| Lancashire Lightning | 1 | 2015 |
| Middlesex Crusaders | 1 | 2008 |
| Somerset Sabres | 1 | 2005 |
| Surrey Lions | 1 | 2003 |
| Sussex Sharks | 1 | 2009 |
| Birmingham Bears | 1 | 2014 |
| Worcestershire Rapids | 1 | 2018 |