Bwrdd Arthur (Welsh for 'Arthur's Table'), also known as Din Sylwy, is a 164-metre (538 ft) flat-topped limestone hill on the island of Anglesey, in Wales. Located on the eastern end of Red Wharf Bay, some 3 kilometres north west of Llangoed, it is noteworthy from the evidence of pre-historic occupation and as a Site of Special Scientific Interest designated for its botanical interest.
The tiny medieval church of St Michael is on the eastern side of the hill fort.