| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | 50 over |
| Tournament format(s) | League system |
| Champions | East Midlands (1st title) |
| Participants | 18 |
| Most runs | Jane Smit (335) |
| Most wickets | Janet Tedstone (13) Dawn Holden (13) Beth Morgan (13) |
The 1999 Women's County One-Day Championship was the 3rd cricket Women's County Championship season. It took place in July and saw 10 county teams, 3 county Second XIs and 5 regional teams compete in a series of divisions. East Midlands Women won the County Championship as winners of the top division, achieving their first Championship title.