Tytherington Down () is a biological Site of Special Scientific Interest in Wiltshire, England, notified in 1975. The site spans a dry valley some south of the village of Tytherington and southeast of Warminster. Sources English Nature citation sheet for the site (accessed 8 August 2006) External links English Nature website (SSSI information) Sites of Special Scientific Interest in Wiltshire Sites of Special Scientific Interest notified in 1975