The 2019 Royal London One-Day Cup tournament was a limited overs cricket competition that formed part of the 2019 domestic cricket season in England and Wales.
All eighteen first-class counties competed in the tournament, which due to the 2019 Cricket World Cup being hosted in England took place at the beginning of the English cricket season starting on 17 April 2019, with the final taking place just over a month later at Lord's on 25 May 2019.
[3] The competition featured two groups of nine teams, based on a rough North–South geographical split.
[4] The group stage took place from the middle of April to the end, taking place earlier than usual due to the 2019 Cricket World Cup taking place in England and Wales.
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.