Llanbister (Welsh pronunciationⓘ) is a small village and community with a 2011 population of 382[1] in Powys, mid Wales, in the historic county of Radnorshire.

It also lies next to the River Ithon which flows southward just west of the village.

In the past, there was a police station in Llanbister, on the north west outskirts of the village, but this has since been sold off as private housing.

[5] There used to be a Post Office in the centre of the village but it is no longer operating: it was proposed for closure in 2008.

In July 1991 an unlicensed free music festival was held there, which was not well received by the local population, so in summer 1992 manure was spread on the land to make a repeat less likely.