Robert Lee Johnson (1922 – May 18, 1972) was an American sergeant who spied for the Soviet Union. Johnson volunteered to spy for the KGB while he was stationed at Berlin, Germany. He also recruited a former Army friend, James Mintkenbaugh. Johnson worked for the KGB between 1953 and 1964, and passed on information while stationed at various sites in Europe and the U.S. In 1964, Johnson was turned in by his wife and, like Mintkenbaugh, received a 25-year prison sentence in 1965.