W tip of Agattu I. Aleutian Islands.
Named for Lieutenant Commander John F. Gillon, U.S. Navy (USN), a naval aviator on duty during the time aerial surveys were being conducted in the Aleutian Islands. Lieutenant Commander Gillon was killed in an airplane crash at sea during naval maneuvers in 1937. He was attached to the Division of Air Navigation, U.S. Navy Hydrographic Office, which proposed his name to Board on Geographic Names (BGN) in 1938. Shown as "West Cape" on a map by L. M. Turner in the 1880's; published in 1944 Aleutian Coast Pilot (p. 135) as "Gillon Point" (Cape Harrell).