Thornlie Train Station is a Transperth train station 17 km from Perth Train Station, in Western Australia, on a spur line of the Armadale line. The station was officially opened on 7 August 2005, and normal train and bus services started the following day. From Perth, the branch route starts from Cannington, bypasses Beckenham, and then switches to a central track which then travels underneath the Albany Highway-Roe Highway flyover. The tracks then returns to ground level and runs parallel to the freight lines until it reaches the station.
The station was designed to be compatible with an extension of the line, with most speculation that this will occur after the Southern Suburbs Railway and the New MetroRail project is completed. The possible extension of the Thornlie line may travel to Canning Vale and join the Mandurah line at Cockburn Central.