Richard B. Frank (born November 11, 1947) is an American lawyer and military historian.
Born in Kansas, Frank graduated from the University of Missouri in 1969, after which he served four years in the United States Army. During the Vietnam War, he served a tour of duty as a platoon leader of the 101st Airborne Division. In 1976, he graduated from the Georgetown University Law Center.
Frank has written several books and articles on the Pacific campaign of World War II and Southeast Asia: