Wakehurst and Chiddingly Woods is a 155.9-hectare (385-acre) biological and geological Site of Special Scientific Interest south-east of Crawley in West Sussex, England.

[1][2] It is a Nature Conservation Review site, Grade I,[3] and part of it is a Geological Conservation Review site.

[4] These woods have steep sided valleys formed by streams cutting through Wadhurst Clay and Tunbridge Wells sands, exposing outcrops of sandstone.

The valleys have a warm, moist micro-climate, with a rich variety of ferns, mosses, liverworts and lichens.

Chiddingly Wood is geologically important because weathering of its sandstone has produced sculptured blocks and a comprehensive set of micro-weathering features.