The 2002–03 season was the 61st in the history of Eastern Counties Football League a football competition in England.
[1] AFC Sudbury were champions, winning their third Eastern Counties Football League title in a row after the new club was formed in 1999.
The Premier Division featured 20 clubs which competed in the division last season, along with three new clubs: Division One featured 15 clubs which competed in the division last season, along with four new clubs: