| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | 50 over |
| Tournament format(s) | League system |
| Champions | Kent (8th title) |
| Participants | 35 |
| Most runs | Sophia Dunkley (451) |
| Most wickets | Katie Thompson (15) Natalie Rowbottom (15) Rebecca Silk (15) Beth Langston (15) |
The 2019 Women's County One-Day Championship was the 23rd cricket Women's County Championship season. It ran from late April to the beginning of June and saw 32 county teams and teams representing Scotland, Wales and the Netherlands compete in a series of divisions. Kent Women won the County Championship as winners of the top division with Yorkshire finishing runners-up. This is the record eighth Championship for Kent.
The tournament was followed by the 2019 Women's Twenty20 Cup and then by the 2019 Women's Cricket Super League, a professional tournament competed for by franchise teams.