Meidrim is a community some 8 miles (13 km) west of Carmarthen and 3.3 miles (5.3 km) north of St Clears in Carmarthenshire, Wales. Meidrim (formerly also spelled 'Mydrim') and its twin village of Drefach are situated either side of the Afon Dewi Fawr at the point where this small river is crossed by the B4298 road and meets with the B4299 road.