Treboeth is a suburb and historical village in the Mynydd-Bach ward of Swansea, Wales. Gwyrosydd Primary School is located in Treboeth. Gwyrosydd was the Bardic name of Daniel James, author of the hymn Calon Lân, which is often sung at rugby matches and on other occasions.The Swansea-Builth Wells National Cycle Route 43 passes through the village. The village is home to several places of worship including Caersalem Chapel, St. Albans, Treboeth Gospel Hall and Mynyddbach Chapel.