1986–87 Sussex County Football League

The 1986–87 Sussex County Football League season was the 62nd 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:
 * Haywards Heath
 * Wick

Division Two
Division Two featured 13 clubs which competed in the division last season, along with three new clubs:
 * Bexhill Town, promoted from Division Three
 * Ringmer, relegated from Division One
 * Seaford Town, promoted from Division Three

Also, Albion United changed name to Little Common Albion.

Division Three
Division Three featured 13 clubs which competed in the division last season, along with one new club:
 * Lingfield, relegated from Division Two