1980–81 Sussex County Football League

The 1980–81 Sussex County Football League season was the 56th in the history of Sussex County Football League a football competition in England.

Division One
Division One featured 14 clubs which competed in the division last season, along with two new clubs, promoted from Division Two:
 * Hastings Town
 * Three Bridges

Division Two
Division Two featured twelve clubs which competed in the division last season, along with two new clubs relegated from Division One:
 * Haywards Heath
 * Rye United