Stockbridge Down is a 69.8-hectare (172-acre) biological Site of Special Scientific Interest east of Stockbridge in Hampshire.

[1][2] It is a Nature Conservation Review site, Grade 2.

[3] It is owned by the National Trust and parts of it are designated as scheduled monuments, including an Iron Age hillfort (Woolbury) and fourteen Bronze Age burial mounds.

[4][5] This site has a variety of scrub and grassland habitats on a north-west facing slope of chalk and a clay-with-flints plateau.

There is a diverse range of butterflies, such as chalk-hill blue, marbled white and dark green fritillary, while moths include the oblique striped.