1977–78 United Counties League

The 1977–78 United Counties League season was the 71st in the history of the United Counties League, a football competition in England.

Premier Division
The Premier Division featured 19 clubs which competed in the division last season, along with one new club:
 * Eynesbury Rovers, promoted from Division One

Division One
The Division One featured 17 clubs which competed in the division last season, along with 3 new clubs:
 * Vauxhall Motors, relegated from the Premier Division
 * Stewart & Lloyds Corby reserves, promoted from Division Two
 * Byfield Athletic, promoted from Division Two

Division Two
The Division Two featured 14 clubs which competed in the division last season, along with 3 new clubs:
 * Towcester Town, transferred from the South Midlands League
 * Ford Sports Daventry
 * Eynesbury Rovers reserves