| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | 50 over |
| Tournament format(s) | League system |
| Champions | Sussex (3rd title) |
| Participants | 28 |
| Most runs | Charlotte Edwards (302) |
| Most wickets | Judith Turner (10) Dawn Prestidge (10) |
The 2005 Women's County One-Day Championship was the 9th cricket Women's County Championship season. It ran from May to August and saw 27 county teams plus Wales compete in a series of divisions. Sussex Women won the County Championship as winners of the top division, their third title in three years.