| WAGR K class | |
| Powertype: | Steam |
| Builder: | Hudswell, Clarke & Co |
| Serialnumber: | 387 |
| Whytetype: | 0-6-2T |
| Fueltype: | Coal |
| Watercap: | 656impgal |
| Boilerpressure: | 1202NaN2 |
| Firearea: | 11square feet |
| Tractiveeffort: | 96492NaN2 |
| Factorofadhesion: | 6.2 |
| Operator: | Western Australian Government Railways |
| Fleetnumbers: | K19 |
| Firstrundate: | 27 March 1891 |
| Disposition: | scrapped |
The WAGR K class was a single member class of 0-6-2T tank locomotive used intermittently by the Western Australian Government Railways (WAGR) between 1891 and 1926.
The K class engine was built in 1891 by Hudswell, Clarke & Co, Leeds, for the construction of Fremantle Harbour. It entered service with the Public Works Department, moving later the same year to WAGR as K19.
The locomotive was used subsequently on a number of other construction projects, passing into and out of WAGR ownership on several occasions with the Public Works Department, Goldfields Water Supply Administration and Fremantle Harbour Works Department operating it at various times across the state from Geraldton in the north to Bunbury in the south. When it made one of its returns to WAGR ownership in 1903, the class designation had been reallocated to another class along with number 19, so it was reclassified as L5.
In 1926 it was stored at Midland Railway Workshops and scrapped in about 1931.
The K class designation was reused by the K class locomotives introduced in 1893 and again in the 1960s when the K class diesel locomotives entered service.