Taurus was an 0-6-0ST broad gauge locomotive operated by the South Devon Railway. It was a very different locomotive to all the other 0-6-0s used on the South Devon Railway. It was much smaller and was normally used on one of the branches, where it would regularly work passenger trains, or on the dockside lines in the Plymouth area. It was built by the Avonside Engine Company and was a saddle tank similar to 2-4-0 Prince.