Grafton is a civil parish in Wiltshire, England, in the Vale of Pewsey about 7 miles (11 km) southeast of Marlborough. Its main settlement is the village of East Grafton, on the A338 Burbage - Hungerford road; the parish includes the village of Wilton (not to be confused with the town of Wilton near Salisbury) and the hamlets of West Grafton, Marten and Wexcombe. The parish is within the North Wessex Downs Area of Outstanding Natural Beauty, while Marten lies under the northwest edge of the Hampshire Downs.