| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | 50 over |
| Tournament format(s) | League system |
| Champions | Kent (5th title) |
| Participants | 37 |
| Most runs | Sarah Taylor (345) |
| Most wickets | Isobelle Watson (18) |
The 2012 Women's County One-Day Championship was the 16th cricket Women's County Championship season. It ran from May to September and saw 33 county teams and teams representing Ireland, Scotland, Wales and the Netherlands compete in a series of divisions. Kent Women won the County Championship as winners of the top division, beating Essex in the division final. The Championship was Kent's fifth title, and their second in two seasons.