2017–18 Southern Counties East Football League

The 2017–18 Southern Counties East Football League season was the 52nd in the history of the Southern Counties East Football League, a football competition in England, and was the second year the competition has two divisions, the Premier Division and Division One.

The constitution for Step 5 and Step 6 divisions for 2017–18 was announced on 26 May 2017.

Premier Division
The Premier Division consisted of 17 clubs from the previous season along with three new clubs:
 * Chatham Town, relegated from the Isthmian League
 * Glebe, promoted from Division One
 * Rusthall, promoted from Division One

Division One
Division One consisted of 16 clubs from the previous season along with three new clubs:
 * Erith & Belvedere, relegated from the Premier Division
 * Fisher, relegated from the Premier Division
 * Punjab United, promoted from the Kent County League

Also, Eltham Palace changed their name to Stansfeld.