The Treherbert Line is a railway line in South Wales, primarily serving the town of Treherbert in the Rhondda Valley. It is part of the Rhondda Cynon Taf county and connects to the broader South Wales rail network, facilitating travel and transport in the region. Originally opened in the late 19th century, the Treherbert Line has undergone various upgrades and improvements over the years. It is operated by Transport for Wales and provides essential services for commuters and visitors, linking local communities to larger cities like Cardiff and Swansea.