Bethlehem is a small village located in the county of Carmarthenshire, South Wales. The village is situated in the Tywi Valley south of Manordeilo, to the East of Dyffryn Ceirdych, North of Crug Glas and lies to the North East of Llwyndu. The village chapel was given the name Dyffryn Ceidrych and the village was originally named after the chapel during the 19th century.

With the town's name having religious connotations, a popular seasonal attraction is to post Christmas cards from the town in order to gain a Bethlehem postmark - the event has grown in public awareness since 1965.

Bethlehem Village lies in the shadow of Y Carn Goch, a hill situated in the Brecon Beacons on the south side of the Tywi Valley. Its two Iron Age hill forts and Bronze Age burial mounds distinguish Y Carn Goch, the location also claims to have evidence demonstrating inhabitancy from the Neolithic times.

The Beacons Way is the official trail of the Brecon Beacons National Park and passes east-west through Bethlehem and the major ranges of the Black Mountains, the Brecon Beacons and the Black Mountain. The route involves remote and rugged terrain with 8,500ft ascent. As well as reaching many of the major peaks including Fan y Big, Pen y Fan, Fan Llia, Fan Hir, Fan Foel and Twyn Swnd, there are glacial lakes, ancient standing stones, churches and fine mountain views.