Bancyfelin is a village, 5 miles (8.0 km) west of Carmarthen, Wales. The English translation of the Welsh name is Hillside of the Mill. There is no remnant of the mill today.
Up until the 1980s when the A40dual carriagewaybypass opened, the village was plagued by traffic jams in the summer months due to holidaymakers driving to the West Walescoast. The village is located mainly on the old A40 with the exception of the Council Estate built on a nearby hill. The village has gradually expanded with the building of houses on the outskirts.