Felin-fach

Felin-fach is a community in Powys, Wales, northeast of Brecon. The community had a population of 673 as of the 2011 UK Census. It includes the villages and hamlets Llandyfaelog Tre'r-graig, Llanfilo, Tredomen, Trefeitha, Pen-isa'r-waen and Talachddu.

The church of Llanfilo in the community was founded by Saint Bilo. At Llandefalle is also the Church of St Matthew, a Grade I listed building.