The 2005–06 Sussex County Football League season was the 81st in the history of Sussex County Football League a football competition in England.
[1][2] Division One featured 17 clubs which competed in the division last season, along with three new clubs, promoted from Division Two: Division Two featured 13 clubs which competed in the division last season, along with five new clubs.
Also, Seaford changed name to Seaford Town.
Division Three featured eleven clubs which competed in the division last season, along with three new clubs: