The 1939–40 Northern Football League season was the 47th in the history of the Northern Football League, a football competition in Northern England.
The league originally featured 12 clubs which competed in the last season, along with two new clubs: The initial competition was abandoned on 16 December 1939 after Whitby United, Evenwood Town, Brandon Social,[1] Billingham, Cockfield, and Ferryhill Athletic resigned from the league between 30 September and 16 December.
The remaining eight clubs agreed to begin a new competition beginning on 1 January 1940.
[2]