The 2015–16 season was the 74th in the history of Eastern Counties Football League, a football competition in England.
[1] Norwich United were champions, winning their second Eastern Counties Football League title in a row and were promoted to the Isthmian League for the first time in their history.
The Premier Division featured 17 clubs which competed in the division last season, along with three new clubs, promoted from the Division One:[2] The following five clubs applied for promotion to Step 4:[3] Godmanchester Rovers, Ipswich Wanderers, Mildenhall Town, Norwich United and Stanway Rovers.
Division One featured 16 clubs which competed in the division last season, along with three new clubs, relegated from Premier Division:[2]