Great Bedwyn is a village and civil parish in east Wiltshire, England. The village is on the River Dun about 4.5 miles (7.2 km) southwest of Hungerford, 14 miles (23 km) southeast of Swindon and 6 miles (9.7 km) southeast of Marlborough. The Kennet and Avon Canal and the Reading to Taunton line both follow the Dun and pass through the village. Bedwyn railway station is at Great Bedwyn and is the terminus of the rail commuter service via Reading and London Paddington.