Lieutenant General Smith Dun MC (11 November 1906 – 1979) was the commander-in-chief of the Burmese Army from 4 January 1948 to 1 February 1949. He was an ethnic Karen and the first person belonging to the ethnic group to hold the office. Dun enlisted in the Indian Army on 8 November 1924, initially with the 10th battalion 20th Burma Rifles and after training served with the 2nd battalion 20th Burma Rifles, seeing service in Burma during the rebellion of 1930-32.