1989–90 United Counties League

The 1989–90 United Counties League season was the 83rd 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 two new clubs:
 * Burton Park Wanderers, promoted from Division One
 * Wellingborough Town, relegated from the Southern Football League

Also, Stewart & Lloyds Corby changed name to Hamlet Stewart & Lloyds.

Division One
Division One featured 18 clubs which competed in the division last season, along with one new club:
 * Daventry Town, joined from the Northamptonshire Combination League