The Silverton Tramway was an Australian 56-kilometre (35 mi) long 3 ft 6 in (1,067 mm) narrow gauge railway running from Cockburn on the South Australian state border to Broken Hill in New South Wales. Operating between 1888 and 1970 it served the mines of Broken Hill, and formed the link between the standard gauge New South Wales Government Railways and the narrow gauge South Australian Railways. The line was owned and operated by the Silverton Tramway Company.