New Wardour Castle is a Grade I listed English country house at Wardour, near Tisbury in Wiltshire, built for the Arundell family. The house is of Palladian style, designed by the architect James Paine, with additions by Giacomo Quarenghi, who was a principal architect of the Imperial Russian capital city, Saint Petersburg.

Wardour is a settlement in the civil parish of Tisbury, in Wiltshire, England, about 13 miles (21 km) west of Salisbury and 4 miles (6 km) south of Hindon.