2009–10 United Counties League

The 2009–10 United Counties League season was the 103rd in the history of the United Counties League, a football competition in England.

Premier Division
The Premier Division featured 20 clubs which competed in the division last season, along with one new club:
 * Daventry United, promoted from Division One

Division One
Division One featured 15 clubs which competed in the division last season, along with one new club:
 * Potton United, relegated from the Premier Division