The 1983–84 Northern Football League season was the 86th in the history of Northern Football League, a football competition in England.
Division One
Division One featured 16 clubs which competed in the division last season, along with two new clubs, promoted from Division Two: Gretna Peterlee Newtown
League table
Division Two
Division Two featured nine clubs which competed in the division last season, along with nine new clubs. Clubs relegated from Division One: Durham City West Auckland Town Willington Clubs joined from the Wearside Football League: Brandon United Chester-le-Street Town Seaham Colliery Welware Clubs joined from the Northern Football Alliance: Darlington Cleveland Bridge Shotton Comrades Plus: Langley Park