South Australian Railways K class may refer to:
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South Australian Railways K class (broad gauge)
Eighteen South Australian Railways K class (broad-gauge) locomotives were built by Beyer, Peacock and Company for the South Australian Railways (SAR) between 1878 and 1884. Despite having a fundamental design flaw that affected their original ...
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South Australian Railways K class (narrow gauge)
The South Australian Railways K class (narrow gauge) comprised a single locomotive. The design, by South Australian Railways Locomotive Engineer William Thow, was very similar to that of the broad-gauge K class, but it was smaller and lighter ...
, a very similar but smaller, lighter variant
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