Crai is a village in the Brecon Beacons National Park in the county of Powys, Wales and the historic county of Breconshire. The population of Cray at the 2011 census was 241. It gives its name to the community of Cray, within which are the hamlet of Felin-Crai and a large number of dispersed farms around the valley of the Afon Crai. The river is dammed 2 km / 1.5 mi southwest of the village to form Cray Reservoir. Crai means fresh, raw water.
- "Community population 2011". Retrieved 14 November 2015.
- Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'
- Owen, H.W. & Morgan, R. 2007 'Dictionary of the Place-names of Wales' Gomer Press, Ceredigion