Carreg Coetan Arthur is the name of a neolithic dolmen near Newport in North Pembrokeshire, Wales.
Carreg Coetan Arthur dates from around 3,000 BC and is the remains of a Neolithic burial chamber (also known as a quoit).
The remains consist of a 4 metre long capstone on smaller supporting rocks. It would have originally been earth covered but this has eroded away.
The headland is in the care of the National Trust and the site is a scheduled ancient monument.