2023 One-Day Cup

The 2023 One-Day Cup tournament was a limited overs cricket competition that formed part of the 2023 domestic cricket season in England and Wales. Matches were contested over 50 overs per side, having List A cricket status, with all eighteen first-class counties competing in the tournament. The tournament started on 1 August 2023, with the final taking place on 16 September 2023 at Trent Bridge in Nottingham. Kent were the defending champions, having won the 2022 tournament.

Leicestershire won the tournament, beating Hampshire in the final by two runs.

Teams
The teams were placed into the following groups:


 * Group A: Essex, Hampshire, Kent, Lancashire, Leicestershire, Middlesex, Nottinghamshire, Surrey, Yorkshire
 * Group B: Derbyshire, Durham, Glamorgan, Gloucestershire, Northamptonshire, Somerset, Sussex, Warwickshire, Worcestershire

Group A fixtures
Source:

Group B fixtures
Source:

Group A standings

 * Advanced directly to the semi-finals
 * Advanced to the quarter-finals

Group B standings

 * Advanced directly to the semi-finals
 * Advanced to the quarter-finals

Knockout stage
The winner of each group progressed straight to the semi-finals, with the second and third placed teams playing a play-off match against a team from the other group which made up the play-offs. The winner of each play-off will play one of the group winners in the semi-finals.