2021–22 Eastern Counties Football League

The 2021–22 season was the 79th season in the history of the Eastern Counties Football League, a football competition in England. Teams are divided into three divisions, the Premier Division at Step 5, and the geographically separated Division One North and Division One South, both at Step 6 of the English football league system.

The allocations for Steps 5 and 6 this season were announced by the Football Association and published on the league's website on 18 May 2021, subject to appeals. The league constitution was published on 27 June. After the abandonment of the 2019–20 and 2020–21 seasons due to the COVID-19 pandemic in England, numerous promotions were decided on a points per game basis over the previous two seasons.

Gorleston were champions, winning their first Eastern Counties Football League title and were promoted to the Isthmian League for the first time in their history. Wroxham finished second and returned to the Isthmian League after five years as one of ten runners-up from Step 5 with the most points per game.

Premier Division
The Premier Division featured 16 clubs which competed in the division last season, along with four new clubs, promoted from Division One North:
 * Fakenham Town
 * Lakenheath
 * March Town United
 * Mulbarton Wanderers

Division One North
Division One North featured ten clubs which competed in the previous season, along with six new clubs.
 * Clubs, promoted from the Anglian Combination:
 * Harleston Town
 * University of East Anglia
 * Promoted from the Peterborough and District League:
 * FC Parson Drove
 * Peterborough North End Sports
 * Transferred from the United Counties League:
 * Huntingdon Town
 * Whittlesey Athletic

Also, Blackstones and Bourne Town were initially moved to this division from the United Counties League but they successfully appealed and their transfers were rescinded.

Division One South
Division One South featured 14 clubs which competed in the division last season, along with six new clubs:
 * Clubs, transferred from Division One North:
 * AFC Sudbury reserves
 * Cornard United
 * Haverhill Borough
 * Ipswich Wanderers


 * Plus:
 * Buckhurst Hill, promoted from the Essex Olympian League
 * Park View, transferred from the Spartan South Midlands League