Robert Earl Cleary (June 2, 1931 – February 11, 2018) was a United States Marine who served as the 10th Sergeant Major of the Marine Corps from 1983 to 1987. He served in the Marine Corps for 36 years, including seeing combat in both the Korean War and the Vietnam War. For his actions in Vietnam, he was awarded the Silver Star, the Navy Commendation Medal, and two Purple Hearts.He was the last Sergeant Major of the Marine Corps to have served in the Korean War.