523 m
Gyrn Moelfre is a mountain in Powys, mid Wales, near the border with Shropshire. It stands to the south-east of the Berwyns, from which it is separated by Afon Ysgwennant. The village of Llansilin lies on its south-west slopes. It was historically in Denbighshire, but the area was transferred to Powys in 1996.