2021–22 Northern Football League

The 2021–22 season was the 124th in the history of the Northern Football League, a football competition in England. The league operated two divisions in the English football league system, Division One at step 5, and Division Two at step 6.

The allocations for Steps 5 and 6 this season were announced by the Football Association (The FA) on 18 May 2021, and were subject to appeal.

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.

Division One
Division One featured 17 clubs which competed in the division last season, along with three new clubs, promoted from Division Two:
 * Crook Town
 * Redcar Athletic
 * West Allotment Celtic

Division Two
Division Two featured 17 clubs which competed in the division last season, along with for new clubs:
 * Blyth Town, promoted from the Northern Football Alliance
 * Boldon Community Association, promoted from the Wearside League after appeal
 * Horden Community Welfare, promoted from the Wearside League
 * Redcar Town, promoted from the North Riding League