| Saturday 20 May 2023 | Birmingham Bears v Yorkshire Vikings | Edgbaston |
| Derbyshire Falcons v Lancashire Lightning | Edgbaston |
| Wednesday 24 May 2023 | Kent Spitfires v Gloucestershire | Spitfire Ground, Canterbury |
| Northamptonshire Steelbacks v Worcestershire Rapids | County Ground, Northampton |
| Somerset v Hampshire Hawks | Cooper Associates County Ground, Taunton |
| Thursday 25 May 2023 | Lancashire Lightning v Leicestershire Foxes | Emirates Old Trafford |
| Middlesex v Surrey | Lord’s |
| Friday 26 May 2023 | Gloucestershire v Glamorgan | Seat Unique Stadium, Bristol |
| Hampshire Hawks v Middlesex | Ageas Bowl |
| Leicestershire Foxes v Birmingham Bears | Uptonsteel County Ground, Leicester |
| Northamptonshire Steelbacks v Durham | County Ground, Northampton |
| Notts Outlaws v Derbyshire Falcons | Trent Bridge |
| Surrey v Kent Spitfires | Kia Oval |
| Sussex Sharks v Somerset | 1st Central County Ground, Hove |
| Worcestershire Rapids v Yorkshire Vikings | New Road |
| Saturday 27 May 2023 | Lancashire Lightning v Notts Outlaws | Emirates Old Trafford |
| Sunday 28 May 2023 | Lancashire Lightning v Notts Outlaws | Emirates Old Trafford |
| Sunday 28 May 2023 | Somerset v Glamorgan | Cooper Associates County Ground, Taunton |
| Surrey v Sussex Sharks | Kia Oval |
| Yorkshire Vikings v Durham | Headingley |
| Monday 29 May 2023 | Birmingham Bears v Lancashire Lightning | Edgbaston |
| Derbyshire Falcons v Northamptonshire Steelbacks | Incora County Ground, Derby |
| Durham v Notts Outlaws | Seat Unique Riverside |
| Middlesex v Gloucestershire | Merchant Taylors’ School |
| Worcestershire Rapids v Leicestershire Foxes | New Road |
| Tuesday 30 May 2023 | Essex Eagles v Gloucestershire | Cloud County Ground, Chelmsford |
| Kent Spitfires v Somerset | Spitfire Ground, Canterbury |
| Notts Outlaws v Yorkshire Vikings | Trent Bridge |
| Wednesday 31 May 2023 | Hampshire Hawks v Surrey | Ageas Bowl |
| Middlesex v Glamorgan | Merchant Taylors’ School |
| Northamptonshire Steelbacks v Birmingham Bears | County Ground, Northampton |
| Thursday 1 June 2023 | Leicestershire Foxes v Derbyshire Falcons | Uptonsteel County Ground, Leicester |
| Sussex Sharks v Essex Eagles | 1st Central County Ground, Hove |
| Yorkshire Vikings v Lancashire Lightning | Headingley |
| Friday 2 June 2023 | Derbyshire Falcons v Birmingham Bears | Incora County Ground, Derby |
| Durham v Lancashire Lightning | Seat Unique Riverside |
| Essex Eagles v Hampshire Hawks | Cloud County Ground, Chelmsford |
| Glamorgan v Kent Spitfires | Sophia Gardens |
| Gloucestershire v Surrey Cricket | Seat Unique Stadium, Bristol |
| Northamptonshire Steelbacks v Leicestershire Foxes | County Ground, Northampton |
| Notts Outlaws v Worcestershire Rapids | Trent Bridge |
| Somerset v Middlesex | Cooper Associates County Ground, Taunton |
| Saturday 3 June 2023 | Birmingham Bears v Notts Outlaws | Edgbaston |
| Hampshire Hawks v Sussex Sharks | Ageas Bowl |
| Sunday 4 June 2023 | Durham v Leicestershire Foxes | Seat Unique Riverside |
| Gloucestershire v Middlesex | Seat Unique Stadium, Bristol |
| Kent Spitfires v Surrey Cricket | Spitfire Ground, Canterbury |
| Notts Outlaws v Lancashire Lightning | Trent Bridge |
| Somerset v Essex Eagles | Cooper Associates County Ground, Taunton |
| Sussex Sharks v Glamorgan | 1st Central County Ground, Hove |
| Worcestershire Rapids v Northamptonshire Steelbacks | New Road |
| Yorkshire Vikings v Derbyshire Falcons | Headingley |
| Tuesday 6 June 2023 | Durham v Northamptonshire Steelbacks | Seat Unique Riverside |
| Essex Eagles v Sussex Sharks | Cloud County Ground, Chelmsford |
| Leicestershire Foxes v Yorkshire Vikings | Uptonsteel County Ground, Leicester |
| Middlesex v Hampshire Hawks | Radlett |
| Wednesday 7 June 2023 | Birmingham Bears v Derbyshire Falcons | Edgbaston |
| Glamorgan v Surrey | Sophia Gardens |
| Hampshire Hawks v Somerset | Ageas Bowl |
| Kent Spitfires v Essex Eagles | Spitfire Ground, Canterbury |
| Lancashire Lightning v Worcestershire Rapids | Blackpool |
| Thursday 8 June 2023 | Middlesex v Sussex Sharks | Lord’s |
| Notts Outlaws v Durham | Trent Bridge |
| Friday 9 June 2023 | Birmingham Bears v Northamptonshire Steelbacks | Edgbaston |
| Derbyshire Falcons v Notts Outlaws | Incora County Ground, Derby |
| Glamorgan v Essex Eagles | Sophia Gardens |
| Gloucestershire v Somerset | Seat Unique Stadium, Bristol |
| Kent Spitfires v Hampshire Hawks | Spitfire Ground, Canterbury |
| Leicestershire Foxes v Durham | Uptonsteel County Ground, Leicester |
| Sussex Sharks v Surrey | 1st Central County Ground, Hove |
| Yorkshire Vikings v Worcestershire Rapids | Headingley |
| Friday 16 June 2023 | Durham v Derbyshire Falcons | Seat Unique Riverside |
| Essex Eagles v Glamorgan | Cloud County Ground, Chelmsford |
| Middlesex v Kent Spitfires | Lord’s |
| Northamptonshire Steelbacks v Lancashire Lightning | County Ground, Northampton |
| Somerset v Surrey | Cooper Associates County Ground, Taunton |
| Sussex Sharks v Hampshire Hawks | 1st Central County Ground, Hove |
| Worcestershire Rapids v Birmingham Bears | New Road |
| Yorkshire Vikings v Leicestershire Foxes | Headingley |
| Saturday 17 June 2023 | Gloucestershire v Kent Spitfires | Seat Unique Stadium, Bristol |
| Sunday 18 June 2023 | Derbyshire Falcons v Yorkshire Vikings | Chesterfield |
| Glamorgan v Gloucestershire | Sophia Gardens |
| Lancashire Lightning v Durham Cricket | Emirates Old Trafford |
| Leicestershire Foxes v Worcestershire Rapids | Uptonsteel County Ground, Leicester |
| Middlesex v Essex Eagles | Lord’s |
| Northamptonshire Steelbacks v Notts Outlaws | County Ground, Northampton |
| Surrey v Hampshire Hawks | Kia Oval |
| Monday 19 June 2023 | Essex Eagles v Somerset | Cloud County Ground, Chelmsford |
| Tuesday 20 June 2023 | Durham v Birmingham Bears | Seat Unique Riverside |
| Gloucestershire v Hampshire Hawks | Seat Unique Stadium, Bristol |
| Leicestershire Foxes v Notts Outlaws | Uptonsteel County Ground, Leicester |
| Surrey v Glamorgan | Kia Oval |
| Sussex Sharks v Kent Spitfires | 1st Central County Ground, Hove |
| Worcestershire Rapids v Lancashire Lightning | New Road |
| Yorkshire Vikings v Northamptonshire Steelbacks | Headingley |
| Wednesday 21 June 2023 | Glamorgan v Somerset | Sophia Gardens |
| Northamptonshire Steelbacks v Derbyshire Falcons | County Ground, Northampton |
| Thursday 22 June 2023 | Essex Eagles v Kent Spitfires | Cloud County Ground, Chelmsford |
| Gloucestershire v Sussex Sharks | Seat Unique Stadium, Bristol |
| Surrey v Middlesex | Kia Oval |
| Worcestershire Rapids v Notts Outlaws | New Road |
| Yorkshire Vikings v Birmingham Bears | Headingley |
| Friday 23 June 2023 | Birmingham Bears v Worcestershire Rapids | Edgbaston |
| Durham v Yorkshire Vikings | Seat Unique Riverside |
| Glamorgan v Sussex Sharks | Sophia Gardens |
| Hampshire Hawks v Essex Eagles | Ageas Bowl |
| Kent Spitfires v Middlesex | Spitfire Ground, Canterbury |
| Lancashire Lightning v Derbyshire Falcons | Emirates Old Trafford |
| Leicestershire Foxes v Northamptonshire Steelbacks | Uptonsteel County Ground, Leicester |
| Somerset v Gloucestershire | Cooper Associates County Ground, Taunton |
| Friday 30 June 2023 | Derbyshire Falcons v Leicestershire Foxes | Incora County Ground, Derby |
| Essex Eagles v Middlesex | Cloud County Ground, Chelmsford |
| Hampshire Hawks v Glamorgan | Ageas Bowl |
| Kent Spitfires v Sussex Sharks | Spitfire Ground, Canterbury |
| Lancashire Lightning v Yorkshire Vikings | Emirates Old Trafford |
| Notts Outlaws v Birmingham Bears | Trent Bridge |
| Surrey v Somerset | Kia Oval |
| Worcestershire Rapids v Durham | New Road |
| Saturday 1 July 2023 | Sussex Sharks v Gloucestershire | 1st Central County Ground, Hove |
| Sunday 2 July 2023 | Birmingham Bears v Durham | Edgbaston |
| Derbyshire Falcons v Worcestershire Rapids | Incora County Ground, Derby |
| Glamorgan v Middlesex | Sophia Gardens |
| Hampshire Hawks v Gloucestershire | Ageas Bowl |
| Lancashire Lightning v Northamptonshire Steelbacks | Emirates Old Trafford |
| Notts Outlaws v Leicestershire Foxes | Trent Bridge |
| Somerset v Kent Spitfires | Cooper Associates County Ground, Taunton |
| Surrey v Essex Eagles | Kia Oval |
| Thursday 6 July 2023 | Quarter-final 1 | To Be Confirmed |
| Quarter-final 2 | To Be Confirmed |
| Friday 7 July 2023 | Quarter-final 3 | To Be Confirmed |
| Quarter-final 4 | To Be Confirmed |
| Saturday 15 July 2023 | Semi-final 1 | Edgbaston |
| Semi-final 2 | Edgbaston |
| Vitality Blast Final | Edgbaston |