Ramoth, Hirwaun was a Baptist chapel in Trevenock Place, Hirwaun, Aberdare, Wales. Following closure in 1982, the building continues to be used for worship by the Assemblies of God.
The history of Ramoth starts in the early 19th century, when meetings were held in a house owned by George Overton of the Hirwaun Ironworks. A chapel was opened in 1825 as a branch of Calfaria, Aberdare and was the mother church of Heolyfelin, Aberdare. By 1849, membership had increased to 178.
In 1853, T.W. Rammell's report on public health in the parish of Aberdare stated that the burial ground at Ramoth was nearly full and, due to its proximity to housing, should be among a number of nonconformist burial grounds that should be closed.
Thomas Joseph, a colliery proprietor, was a deacon at Ramoth. In the early 1850s he opened a new colliery at Trecynon and persuaded many Hirwaun colliers who were members at Ramoth to move with him. Joseph was the pivotal figure in the formation of the new church at Holyfelin, and for a time the membership at Ramoth declined considerably and the cause struggled to remain in existence.
J.S. Johns arrived as minister in 1899, but died two years later at a young age.
Peak membership was reached in 1904, and in 1913 a new organ was installed following a gift from Andrew Carnegie.
The chapel closed as a Baptist cause in 1982, but continues to be used for Christian worship.