Cwmwysg (Welsh for "Usk valley") is a small rural community southwest of Trecastle in the valley of the Usk river, Powys, Wales.
It includes the Saron Independent Chapel, originally built in 1822 and rebuilt in 1856.[1] The humpback stone river bridge over the Usk is Grade II listed.[2]
The Welsh painter Aneurin Jones (1930–2017) was born in Cwmwysg.[3]
