Chiefs of Mission for Bulgaria
- Charles Monroe Dickinson (1901-1903)
- John Brinkerhoff Jackson (1903-)
- John Brinkerhoff Jackson (1905-1907)
- Horace Greeley Knowles (1907-1909)
- Huntington (Francis Mairs Huntington-Wilson) Wilson (1908-)
- Spencer Fayette Eddy (1909-)
- John Ridgely Carter (1909-)
- John Ridgely Carter (1910-)
- John Brinkerhoff Jackson (1911-1913)
- Charles Joseph Vopicka (1913-)
- Charles Stetson Wilson (1921-1928)
- Hans Frederick Arthur Schoenfeld (1928-)
- Henry Wharton Shoemaker (1930-1933)
- Frederick Augustine Sterling (1933-1936)
- Ray Atherton (1937-1939)
- George Howard Earle (1940-)
- Donald Read Heath (1947-1950)
- Edward Page (1959-1962)
- Helen Eugenie (Moore) Anderson (1962-1964)
- Nathaniel Davis (1965-1966)
- John Morgan McSweeney (1966-)
- John Morgan McSweeney (1967-1970)
- Horace Gates Torbert (1970-1973)
- Martin Florian Herz (1974-1977)
- Raymond Leonard Garthoff (1977-1979)
- Jack Richard Perry (1979-1981)
- Robert Louis Barry (1981-1984)
- Melvyn Levitsky (1984-1987)
- Sol Polansky (1987-1990)
- Hugh Kenneth Hill (1990-1993)
- William Dale Montgomery (1993-1996)
- Avis T. Bohlen (1996-1999)
- Richard Monroe Miles (1999-2002)
- James W. Pardew (2002-2005)
- John Ross Beyrle (2005-2008)
- Nancy E. McEldowney (2008-2009)
- James B. Warlick (2009-)
- John Evarts Horner (-)