The MRWA A class was a class of steam locomotives built by Kitson & Co. in Leeds, England, for the Midland Railway of Western Australia (MRWA).

The first three members of the A class, nos A21–A23, entered service in 1926.

Two further batches of A class units followed, nos A24–A26 in 1927 and A27–A29 in 1929.

The others were withdrawn in 1958, and all were sold and cut up for scrap in 1959.

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