2010–11 Eastern Counties Football League

The 2010–11 season was the 69th in the history of Eastern Counties Football League a football competition in England.

Leiston were champions, winning their first Eastern Counties Football League title and were promoted to the Isthmian League for the first time in their history.

Premier Division
The Premier Division featured 19 clubs which competed in the division last season, along with three new clubs, promoted from Division One:
 * Brantham Athletic
 * Clacton
 * Great Yarmouth Town

Division One
Division One featured 16 clubs which competed in the division last season, along with one new club:
 * Cambridge University Press, joined from the Cambridgeshire League