Llandyfaelog is a community located in Carmarthenshire, Wales.
According to the 2001 census the community has a population of 1,272, of which 71.88 percent are Welsh speaking. The population at the 2011 Census had increased to 1,304.
The community is bordered by the communities of Llangunnor, Llangyndeyrn, Kidwelly, St Ishmael, Llangain, and Carmarthen, all being in Carmarthenshire.
Coordinates: 51°46′55″N 4°17′45″W / 51.78194°N 4.29583°W