Folkestone Warren is a 316.3-hectare (782-acre) biological and geological Site of Special Scientific Interest (SSSI) which runs along the coast between Folkestone and Dover in Kent.

[1][2] It is a Nature Conservation Review site[3] and it contains three Geological Conservation Review sites and part of a fourth.

[4][5][6][7] An area of 83.6 hectares (207 acres) is a Local Nature Reserve,[8][9] These chalk cliffs have several nationally rare plants and they provide a location for cliff nesting and wintering birds.

The SSSI also contains two internationally important reference sites for study of the Cretaceous period.

[10]