The Undercliff is the name of several areas of landslip on the south coast of England. They include ones on the Isle of Wight; on the Dorset-Devon border near Lyme Regis; on cliffs near Branscombe in East Devon; and at White Nothe, Dorset. All arose from slump of harder strata over softer clay, giving rise to irregular landscapes of peaks, gullies and slipped blocks, that have become densely vegetated due to their isolation and change of land use. The Kent coast at Folkestone and Sandgate also has similar undercliff areas.

Branscombe is a village in the East Devon district of the English County of Devon.