lying Officer Leslie Hamilton DFC, MBE, was a British First World War flying ace credited with six aerial victories. He disappeared while attempting the first non-stop east-west flight across the Atlantic Ocean. His Fokker F.VIIa, named St. Raphael, was last seen over the mid-Atlantic by oil tanker SS Josiah Macy.

Hamilton was commissioned into the Corps of Royal Engineers as a second lieutenant on 12 June 1916. He was promoted to lieutenant on 12 December 1917, and having transferred to the Royal Flying Corps to train as a pilot, was appointed a flying officer on 17 January 1918.

Hamilton was posted to No. 17 Squadron stationed in Salonika, Greece, flying a SE.5a. His first victory was on 21 April and was shared with fellow ace Acheson Goulding. After No. 17 Squadron was merged with No. 47 Squadron to form No. 150 Squadron, Hamilton scored five more wins. The four triumphs he notched between 4 May and 4 September were shared with other aces, such as Gerald Gibbs, Frederick Travers, and Gerald Gordon Bell. Hamilton's sixth and last win, on 18 September 1918, was a solo one.