Midland Railway of Western Australia

Midland Railway Company of Western Australia
	B6 with a mixed train at Watheroo, ca 1910
Industry	Railway operator
Founded	21 March 1890
Defunct	31 July 1964
Fate	purchased by Western Australian Government Railways
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 London Stock Exchange. Although having its headquarters in London, it had no association with the English Midland Railway.