1983–84 Sussex County Football League

The 1983–84 Sussex County Football League season was the 59th in the history of Sussex County Football League a football competition in England. It also was the first season for the league to consist of three divisions.

Division One
Division One featured 14 clubs which competed in the division last season, along with two new clubs, promoted from Division Two:
 * Horsham YMCA
 * Lancing

Division Two
Division Two featured 13 clubs which competed in the division last season, along with three new clubs:
 * Arundel, relegated from Division One
 * Chichester City, relegated from Division One
 * Lingfield, transferred from the Combined Counties League