1990–91 Sussex County Football League
The 1990–91 Sussex County Football League season was the 66th in the history of Sussex County Football League a football competition in England.Division One featured 16 clubs which competed in the division last season, along with two new clubs, promoted from Division Two:
Division Two featured twelve clubs which competed in the division last season, along with four new clubs.
- Clubs relegated from Division One:
- *Lancing
- *Redhill
- Clubs promoted from Division Three:
- *Sidley United
- *Worthing United
League table
Division Three featured eleven clubs which competed in the division last season, along with two new clubs, relegated from Division Two:
- Ferring
- Storrington
League table