2005–06 Northern Football League

The 2005–06 Northern Football League season was the 108th in the history of Northern Football League, a football competition in England.

Division One
Division One featured 18 clubs which competed in the division last season, along with three new clubs, promoted from Division Two:
 * Newcastle Blue Star
 * Washington Nissan, who also changed name to Sunderland Nissan
 * West Allotment Celtic

Also, Newcastle Benfield Saints changed name to Newcastle Benfield (Bay Plastics).

Division Two
Division Two featured 14 clubs which competed in the division last season, along with six new clubs.
 * Clubs relegated from Division One:
 * Consett
 * Guisborough Town
 * Peterlee Newtown
 * Plus:
 * Darlington Railway Athletic, joined from the Wearside Football League
 * Ryton, joined from the Northern Football Alliance
 * Spennymoor Town, new club formed by merger of Evenwood Town and folded Spennymoor United