2017–18 Spartan South Midlands Football League
The 2017–18 Spartan South Midlands Football League season was the 21st in the history of Spartan South Midlands Football League, a football competition in England.
The constitution for Step 5 and Step 6 divisions for 2017–18 was announced on 26 May 2017. Following a few amendments, the constitution for the Spartan South Midlands League was ratified at the league's AGM on 24 June 2017.The Premier Division featured 20 clubs which competed in the division last season, along with two clubs, promoted from Division One:
- Biggleswade
- Harpenden Town
League table
Division One featured 20 clubs in the division for this season, of which there are five new clubs:
Division Two
Division Two featured 14 clubs which competed in the division last season, along with three new clubs: