Llangeler is a hamlet and community located in north Carmarthenshire, Wales. The name is believed to refer to St. Gelert. Llangeler parish covers a wide area including to the west, the textile village of Drefach Felindre, Waungilwen, Cwmpengraig and to the east, Pont Tyweli which adjoins Llandysul on the Carmarthenshire side of the River Teifi. The population of the parish was 3,222 at the Census of 2001, increasing to 3,427 at the 2011 census.