John Morse Haydon (January 27, 1920 – April 18, 1991) was the governor of the American Samoa from 1969 to 1974. Haydon attended the University of Washington. He served as First Lieutenant in the United States Air Force during World War II and flew 35 combat missions over Germany. Haydon was commissioner of the Seattle Port Commission from 1960 to 1969, and president in 1963, 1968, and 1969. He was a member of the Governor's Advisory Council on Fisheries from 1965 to 1967, and on Commerce and Economic Development from 1965-69. On August 1, 1969, he was appointed Governor of American Samoa by the Secretary of the Interior and he served until October 1974.