River Neath is a river in south Wales running south west from the point at which its headwaters arising in the Brecon Beacons National Park converge to its mouth at Baglan Bay below Briton Ferry on the east side of Swansea Bay.

Briton Ferry is a town and community in the county borough of Neath Port Talbot, Wales. The Welsh name may indicate that the church, llan, is protected from the wind, awel. Alternatively, Sawel may be a derivative of Saul, St Paul's earlier name. He once landed at Briton Ferry. An alternative Welsh name unused today is Rhyd y Brython, a direct translation of Briton Ferry. The Normans referred to the River crossing as La Brittonne and Leland in 1540 as Britanne Fery.