2002–03 Eastern Counties Football League

The 2002–03 season was the 61st in the history of Eastern Counties Football League a football competition in England.

AFC Sudbury were champions, winning their third Eastern Counties Football League title in a row after the new club was formed in 1999.

Premier Division
The Premier Division featured 20 clubs which competed in the division last season, along with three new clubs:
 * Histon reserves, promoted from Division One
 * Norwich United, promoted from Division One
 * Wisbech Town, relegated from the Southern League

Division One
Division One featured 15 clubs which competed in the division last season, along with four new clubs:
 * Felixstowe & Walton United, relegated from the Premier Division
 * Godmanchester Rovers, joined from the Cambridgeshire League
 * Long Melford, joined from the Essex and Suffolk Border League
 * Swaffham Town, relegated from the Premier Division