John Henry Waller (May 8, 1923 – November 4, 2004) was an American historian and author, as well as the Inspector General of the Central Intelligence Agency from 1976 to 1980.
[1][2] From 1947 to 1953, Waller served as vice-consul with the United States Foreign Service in Iran.
[3] Waller was Chief of the CIA's Near East Division from 1971 to 1975, then Inspector General of the Agency from 1976 to 1980.
[4] His report exonerated senior intelligence officials Theodore Shackley, deputy to the director of clandestine operations, and Thomas Clines, director of training in the clandestine services.
[1] Among the books authored by Waller were Gordon of Khartoum: The Saga of a Victorian Hero (1988), Beyond the Khyber Pass: The Road to British Disaster in the First Afghan War (1990), The Unseen War in Europe: Espionage and Conspiracy in the Second World War (1996), and The Devil's Doctor: Felix Kersten and the Secret Plot to Turn Himmler Against Hitler (2002).