The 1965–66 Sussex County Football League season was the 41st 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: Sidley United Southwick
League table
Division Two
Division Two featured 16 clubs which competed in the division last season, along with two new clubs, relegated from Division One: Hastings Rangers Newhaven
League table
References