Codford is a civil parish south of Salisbury Plain in the Wylye Valley in Wiltshire, England. Its settlements are the adjacent villages of Codford St Peter and Codford St Mary, which lie some 7 miles southeast of Warminster. The two villages are on the A36 road between Salisbury and Warminster. The A36 previously ran along the whole length of the High Street, but a bypass which was built in the 1990s removed the through traffic.