1999–2000 Sussex County Football League
The 1999–2000 Sussex County Football League season was the 75th in the history of Sussex County Football League a football competition in England.Division One featured 18 clubs which competed in the division last season, along with two new clubs, promoted from Division Two:
Division Two featured 14 clubs which competed in the division last season, along with four new clubs.
- Clubs relegated from Division One:
- *Broadbridge Heath
- *Hailsham Town
- Clubs promoted from Division Three:
- *Oving Social Club, who also changed name to Oving
- *Westfield
Also, Crawley Down Village changed name to Crawley Down.League table
Division Three featured twelve clubs which competed in the division last season, along with four new clubs:
Also, St Francis Hospital changed name St Francis.League table