Oxwich Bay (Welsh: Bae Oxwich) is a bay on the south of the Gower Peninsula, Wales.
Its landscape features sand dunes, salt marshes and woodland. Oxwich Bay includes a 2.5-mile long sandy beach, accessible from the village of Oxwich. It is a popular spot for swimming and watersports including diving, sailing, water skiing and windsurfing. There is a public footpath along the cliffs from Oxwich Bay, around Oxwich Point, and to Port Eynon Bay. Buses run every couple of hours between Oxwich and Port Eynon.
A wetland site at the rear of the dunes forms Oxwich Burrows National Nature Reserve. The dunes are crossed by a small stream called Nicholaston Pill. The bay ends at the eastern end with the cliffs of High Tor; but at low tide, a continuous sandy beach connects with Three Cliffs Bay beyond.
Submarine cables leave the mainland of Britain from Oxwich. These include the SOLAS cable across the Irish Sea, and the TAT-11 and Gemini North transatlantic telephone cables. These latter two do not terminate here but instead continue on to France (TAT-11) and England (Gemini).
On 1 February 2007, The Travel Magazine named Oxwich beach the most beautiful in Britain.
