Representative of the U.S.A. to the International Atomic Energy Agency (Vienna)
The Chief of Mission has the title of Representative of the U.S.A. to the International Atomic Energy Agency, with the rank of Ambassador
- James B. Cunningham (-)
- Robert Moody McKinney (1957-1958)
- Paul Frederick Foster (1959-1961)
- Henry DeWolf Smyth (1961-1970)
- Thomas Keith Glennan (1970-1973)
- Gerald Frederick Tape (1973-1977)
- Gerard Coad Smith (1977-1980)
- Richard Thomas Kennedy (1981-1993)
- Nelson F. Sievering Jr. (1993-1997)
- Gregory L. Schulte (2005-)