2002–03 Sussex County Football League

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

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

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.