Llangynin
is a village and community located in Carmarthenshire, Wales. The population of the community taken at the 2011 census was 284.
St Cynin's church is a grade II* listed building which stands some 2 km south of the centre of the village.
The community is bordered by the communities of: Llanwinio; Meidrim; St Clears; and Llanboidy, all being in Carmarthenshire.