Stratford Toney Down () is a 23.1 hectare biological Site of Special Scientific Interest in Wiltshire, England, which was notified in 1987. The site lies in a shallow dry valled in the south of Stratford Tony parish, about south-west of Salisbury. It is important for the botanically rich chalk grassland â mainly sheep's fescue and meadow oat-grass â which supports several nationally rare plant and butterfly species.