Llangedwyn is a village in Montgomeryshire, Powys, Wales. The population of the community at the 2011 census was 402.[1] The community includes the hamlet of Pen-y-bont Llanerch Emrys.
It lies in the Tanat Valley near to the Wales/England border. It is approximately five miles from the small town of Llanfyllin and ten miles from the Shropshire market town of Oswestry. The Berwyn mountain range is nearby, as is Pistyll Rhaeadr waterfall. The ruins of Owain Glyndŵr's Sycharth castle lie a few miles outside the village towards Llansilin.
Sir Watkin Williams-Wynn, 10th Baronet, heir of Owain Gwynedd, lived his final years at Llangedwyn Hall.[2] The hall is a Grade II listed building[3] and its gardens and park are listed at Grade II* on the Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales.[4]