The Dyfi National Nature Reserve, managed by Natural Resources Wales, the successor body to the Countryside Council for Wales, is located 7 miles (11 km) north of Aberystwyth in the county of Ceredigion, Wales on the Dyfi estuary.
The area was designated as a Nature Reserve in 1969 and consists of three separate areas:
Coordinates: 52°31′37″N 4°03′05″W / 52.5269°N 4.0514°W