The South African Railways Class NG9 4-6-0 of 1915 was a narrow-gauge steam locomotive. During 1915 and 1916, the South African Railways placed six 4-6-0 steam locomotives in service on the Langkloof narrow-gauge railway. When a system of grouping narrow-gauge locomotives into classes was eventually introduced somewhere between 1928 and 1930, they were classified as Class NG9.