1989–90 Sussex County Football League
The 1989–90 Sussex County Football League season was the 65th 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:
Also, Haywards Heath changed name to Haywards Heath Town.Division Two featured eleven clubs which competed in the division last season, along with five new clubs.
- Clubs relegated from Division One:
- *Oakwood
- *Portfield
- Clubs promoted from Division Three:
- *Franklands Village
- *Saltdean United
- *Stamco
League table
Division Three featured ten clubs which competed in the division last season, along with four new clubs:
- Buxted
- East Grinstead, relegated from Division Two
- Town Mead
- Withdean
Also, Falcons changed name to Rottingdean.League table