The Cathcart District Railway was proposed to serve the arising demand for suburban residential travel on the south side of Glasgow, Scotland. It was planned as a loop running to and from Glasgow Central station, but at first only the eastern arm, to Cathcart via Queens Park, was built, opening in 1886. The western arm was opened in 1894 and trains operated round the loop. A frequent passenger train service was operated, and there was also a limited goods and mineral operation.