Traeth Coch (Welsh: Red Beach) is a wide sandy bay and an area of outstanding natural beauty on the east coast of the island of Anglesey in Wales. The bay is also known in English as Red Wharf Bay and lies between the villages of Pentraeth and Benllech.
Each year the Red Wharf Bay Sailing Club Anglesey Offshore Dinghy Race takes place from Beaumaris to Traeth Bychan. A race over 14 miles up the Menai Straits and down the Anglesey coast. It is an exhilarating sail. There was once a railway line which terminated at the bay, a branch line which joined the Anglesey Central Railway at Pentre Berw.