Harold Brown was an American nuclear physicist who served as United States Secretary of Defense from 1977 to 1981, under President Jimmy Carter. Previously, in the John F. Kennedy and Lyndon B. Johnson administrations, he held the posts of Director of Defense Research and Engineering (1961–1965) and United States Secretary of the Air Force (1965–1969).
- Occupation
- physicist, politician
- Position held
- United States Secretary of Defense, United States Secretary of the Air Force, director of the California Institute of Technology
- Citizenship
- United States
- Born
- September 19, 1927
- Died