The 2005–06 Northern Football League season was the 108th in the history of Northern Football League, a football competition in England.
[1] Division One featured 18 clubs which competed in the division last season, along with three new clubs, promoted from Division Two: Also, Newcastle Benfield Saints changed name to Newcastle Benfield (Bay Plastics).
Division Two featured 14 clubs which competed in the division last season, along with six new clubs.