1993–94 Isthmian League

The 1993–94 season was the 79th season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England. League consisted of four divisions.

Premier Division
The Premier Division consisted of 22 clubs, including 19 clubs from the previous season and three clubs promoted from Division One:
 * Dorking
 * Hitchin Town
 * Molesey

Division One
Division One consisted of 22 clubs, including 16 clubs from the previous season and six new clubs:

Clubs relegated from the Premier Division:
 * Bognor Regis Town
 * Staines Town
 * Windsor & Eton

Clubs promoted from Division Two:
 * Berkhamsted Town
 * Ruislip Manor
 * Worthing

Division Two
Division Two consisted of 22 clubs, including 17 clubs from the previous season and five new clubs:

Clubs relegated from Division One:
 * Aveley
 * Lewes

Clubs promoted from Division Three:
 * Aldershot Town
 * Collier Row
 * Thame United

Division Three
Division Three consisted of 21 clubs, including 16 clubs from the previous season and five new clubs:
 * Cheshunt, joined from the Spartan League
 * Harefield United, relegated from Division Two
 * Harlow Town, returned to the Isthmian League after one season without a league football
 * Oxford City, joined from the South Midlands League
 * Southall, relegated from Division Two