The 2016–17 Spartan South Midlands Football League season was the 20th in the history of Spartan South Midlands Football League, a football competition in England.
| Competition: | Spartan South Midlands Football League Premier Division |
| Season: | 2016–17 |
| Winners: | London Colney |
| Promoted: | Hertford Town |
| Relegated: | Broxbourne Borough |
| Matches: | 462 |
| Total Goals: | 1614 |
| Prevseason: | 2015–16 |
| Nextseason: | 2017–18 |
The Premier Division featured 19 clubs which competed in the division last season, along with three new clubs:
| Competition: | Spartan South Midlands Football League Division One |
| Season: | 2016–17 |
| Winners: | Biggleswade |
| Promoted: | Biggleswade Harpenden Town |
| Matches: | 420 |
| Total Goals: | 1750 |
| Prevseason: | 2015–16 |
| Nextseason: | 2017–18 |
Division One featured 21 club in the division for this season, of which there are five new clubs:
| Competition: | Spartan South Midlands Football League Division Two |
| Season: | 2016–17 |
| Winners: | Thame Rangers |
| Promoted: | Enfield Borough St Neots Town reserves Thame Rangers |
| Matches: | 306 |
| Total Goals: | 1321 |
| Prevseason: | 2015–16 |
| Nextseason: | 2017–18 |
Division Two featured twelve clubs which competed in the division last season, along with six new clubs:
Also, Wolverton Town changed name to Unite MK.