The 2016–17 season was the 119th in the history of Northern Football League, a football competition in England.
The league has operated two divisions in the English football league system, Division One at step 5, and Division Two at step 6.
Division One featured 19 clubs which competed in the division last season, along with three new clubs, promoted from Division Two: Two teams – Bishop Auckland and South Shields applied for promotion to step 4 for the 2017–18 season.
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Division Two featured 17 clubs which competed in the division last season, along with five new clubs: