The 2015–16 season was the 118th 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.
| Competition: | Northern Football League Division One |
| Season: | 2015–16 |
| Winners: | Shildon |
| Relegated: | Bedlington Terriers Norton & Stockton Ancients Durham City |
| Matches: | 462 |
| Total Goals: | 1738 |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
Division One featured 19 clubs which competed in the division last season, along with three new clubs, promoted from Division Two:
Only Bishop Auckland applied for promotion to Step 4.[1] They would have needed to finish in the top three to achieve this.[2]
| Competition: | Northern Football League Division Two |
| Season: | 2015–16 |
| Winners: | South Shields |
| Promoted: | Chester-le-Street Town Ryhope Colliery Welfare South Shields |
| Relegated: | Birtley Town Stokesley Sports Club |
| Matches: | 462 |
| Total Goals: | 1707 |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
Division Two featured 19 clubs which competed in the division last season, along with three new clubs: