Llanddewi Ystradenny

Llanddewi Ystradenni is a community in Radnorshire, Powys, Wales. The population of the Community at the 2011 census was 310.

Centred on the village of Llanddewi, it also includes the hamlet of Heartsease.

The motte and bailey fortification of Buddugre Castle, overlooking the Afon Ithon, is also within the community.