The South African Railways Dock Shunter 0-4-0ST of 1903 was a steam locomotive from the pre-Union era in the Cape of Good Hope. Two 0-4-0 saddle-tank locomotives named Thebus and Stormberg, which were originally built for the Irrigation Department of the Public Works Department of the Cape of Good Hope in 1903, were acquired by the South African Railways in 1916 for use as harbour shunting engines. In railway service they were named instead of being classified and numbered.