The 2018 Royal London One-Day Cup tournament was a limited overs cricket competition that formed part of the 2018 domestic cricket season in England and Wales.
All 18 first-class counties competed in the tournament, which ran from the middle of May until the end of June, when the final took place at Lord's Cricket Ground.
Nottinghamshire were the defending champions of the tournament, having beaten Surrey in 2017 final.
[1] The competition featured two groups of nine teams, based on a rough North–South geographical split.
The final took place at Lord's on 30 June 2018, with Hampshire defeating Kent Spitfires by 61 runs.