The 2002–03 Sussex County Football League season was the 78th in the history of Sussex County Football League a football competition in England.
Division One
Division One featured 18 clubs which competed in the division last season, along with two new clubs, promoted from Division Two: East Preston Shoreham
League table
Division Two
Division Two featured 14 clubs which competed in the division last season, along with four new clubs. Clubs relegated from Division One: Eastbourne United Saltdean United Clubs promoted from Division Three: Pease Pottage Village Steyning Town
League table
Division Three
Division Three featured eleven clubs which competed in the division last season, along with four new clubs: Bosham, relegated from Division Two Midhurst & Easebourne, joined from the West Sussex League St Francis Rangers, formed as merger of St Francis and Ansty Rangers Storrington, relegated from Division Two
Also, Bexhill Town changed name to Bexhill United.
League table
References