The Quakers Yard and Merthyr Railway was a railway company in South Wales. It was owned jointly by the Great Western Railway

Great Western Railway

The Great Western Railway was a British railway company that linked London with the south-west and west of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament in 1835 and ran its first trains in 1838...

 and the Rhymney Railway

Rhymney Railway

The Rhymney Railway was virtually a single stretch of main line, some fifty miles in length, by which the Rhymney Valley was connected to the docks at Cardiff in the county of Glamorgan, South Wales.-History:...

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History

At its southern end, the line connected to the Vale of Neath

Vale of Neath Railway

The Vale of Neath Railway was a broad gauge railway line from Neath to Merthyr Tydfil, in Glamorgan, Wales, and also operated the Swansea and Neath Railway which gave it access to the docks at Swansea...

 line of the Great Western Railway

Great Western Railway

The Great Western Railway was a British railway company that linked London with the south-west and west of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament in 1835 and ran its first trains in 1838...

 (GWR) at Joint Line Junction, just west of Quakers Yard High Level railway station. The line ran up the Vale of Merthyr, and at the northern end it connected to the Merthyr branch of the Vale of Neath line at Cyfartha Junction.

The line was jointly owned and operated by the GWR and the Rhymney Railway

Rhymney Railway

The Rhymney Railway was virtually a single stretch of main line, some fifty miles in length, by which the Rhymney Valley was connected to the docks at Cardiff in the county of Glamorgan, South Wales.-History:...

; it opened in 1886.

Passenger trains over the line ran between and Cardiff; the services ended in 1951.