Llansawel is a community in Carmarthenshire, Wales, about ten miles north of Llandeilo. It covers an area of 4,079 hectares (15.75 sq mi). The community is bordered by the communities of: Pencarreg; Cynwyl Gaeo; Talley; Llanfynydd; Llanfihangel Rhos-y-Corn; and Llanybydder, all being in Carmarthenshire.
Llansawel's population was 438, according to the 2011 census; a 6.1% increase since the 413 people noted in 2001.
The 2011 census showed 47.9% of the population could speak Welsh, a fall from 60.8% in 2001.
Coordinates: 52°00′29″N 4°00′43″W / 52.008°N 4.012°W