Midland Railway of Western Australia

Midland Railway Company of Western Australia

B6 with a mixed train at Watheroo, ca 1910
Industry	Railway operator
Fate	purchased by Western Australian Government Railways
Founded	21 March 1890
Defunct	31 July 1964
Headquarters	London
Area served	Western Australia
Number of employees	472 (1963)

The Midland Railway of Western Australia (MRWA) was a railway company that built and operated the Midland line in Western Australia. It was listed on the . Although having its headquarters in London, it had no association with the English Midland Railway.

In December 1883, John Waddington representing a sydndicate of English capitalists, proposed to Governor Broome to build a line from York via Northam, Newcastle, Bejoording, New Norcia and along the Berkshire Valley to Geraldton under a land grant scheme. A parliamentary select committee recommended the route be altered to branch off from the Eastern Railway at Guildford and run via Chittering, Bindoon, Victoria Plains, Carnamah, Arrino, Upper Irwin and Dongara to Walkaway where it would join the Western Australian Government Railway's line from Geraldton. The agreement was signed on 27 February 1886, with work commencing a few days later.