The 1997–98 Spartan South Midlands Football League season was the first in the history of Spartan South Midlands Football League. The league was formed by the merger of the Spartan League and the South Midlands League. The league consisted of 75 clubs divided into five divisions. At the end of the season Premier divisions were merged, while Division One North was renamed Division One as all the Division One South clubs resigned from the league and formed the London Intermediate League.