| Post: | Ambassador |
| Body: | the United States to Bulgaria |
| Insignia: | US Department of State official seal.svg |
| Insigniasize: | 120px |
| Insigniacaption: | Seal of the United States Department of State |
| Incumbent: | Kenneth H. Merten |
| Incumbentsince: | April 7, 2023 |
| Nominator: | The President of the United States |
| Appointer: | The President |
| Appointer Qualified: | with Senate advice and consent |
| Inaugural: | Charles M. Dickinson as Agent |
| Formation: | April 24, 1901 |
| Website: | U.S. Embassy - Sofia |
The United States ambassador to Bulgaria (Bulgarian: Посланик на САЩ в България) is the ambassador extraordinary and plenipotentiary from the United States to Bulgaria.
| Name | Appointed | Presented credentials | End of term | ||
|---|---|---|---|---|---|
| April 24, 1901 | Appointed terminated, June 30, 1903 [1] | ||||
| June 5, 1903 | September 19, 1903 | Recommissioned to a different combination of countries | |||
| March 8, 1905 | Presented recall, June 4, 1907 | ||||
| July 1, 1907 | August 21, 1907 | Left Bucharest, February 4, 1909 | |||
| December 17, 1908 | January 11, 1909 | ||||
| January 11, 1909 | |||||
| September 25, 1909 | October 24, 1911 | October 24, 1911 |
| Name | Career | Appointed | Presented credentials | End of term | |
|---|---|---|---|---|---|
| June 24, 1910 | |||||
| August 12, 1911 | February 1, 1912 | Presented recall, October 18, 1913 | |||
| Non-career appointee | September 11, 1913 | December 26, 1913 | Relieved of active functions pertaining to Legation Sofia, December 17, 1918 | ||
| Charles S. Wilson | Foreign Service officer | October 8, 1921 | December 5, 1921 | Presented recall, October 4, 1928 | |
| Foreign Service officer | July 17, 1928 | ||||
| Henry Wharton Shoemaker | Non-career appointee | January 22, 1930 | March 28, 1930 | Left post, August 2, 1933 | |
| Foreign Service officer | September 1, 1933 | April 3, 1934 | Left post, June 30, 1936 | ||
| Ray Atherton | Foreign Service officer | July 13, 1937 | October 21, 1937 | Left post, July 5, 1939 | |
| Non-career appointee | February 14, 1940 | April 2, 1940 | Bulgaria declared war on the U.S. on the 13 December 1941 | ||
| Foreign Service officer | September 30, 1947 | November 8, 1947 | Declared persona non grata by Government of Bulgaria, January 19, 1950 | ||
| Edward Page, Jr. | Foreign Service officer | November 23, 1959 | March 14, 1960 | Left post, May 25, 1962 | |
| Eugenie Anderson | Non-career appointee | May 28, 1962 | August 3, 1962 | Left post, December 6, 1964 | |
| Nathaniel Davis | Foreign Service officer | May 6, 1965 | June 4, 1965 | Left post, May 20, 1966 | |
| John M. McSweeney | Foreign Service officer | September 16, 1966 | October 26, 1966 | Promoted to Ambassador Extraordinary and Plenipotentiary |
| Name | Career | Appointed | Presented credentials | End of term | |
|---|---|---|---|---|---|
| Foreign Service officer | April 5, 1967 | April 19, 1967 | Left post, May 29, 1970 | ||
| Horace G. Torbert, Jr. | Foreign Service officer | October 6, 1970 | November 4, 1970 | Left post, January 23, 1973 | |
| Martin F. Herz | Foreign Service officer | February 28, 1974 | April 3, 1974 | Left post, August 6, 1977 | |
| Raymond L. Garthoff | Foreign Service officer | July 29, 1977 | September 16, 1977 | Left post, October 9, 1979 | |
| Jack Richard Perry[2] | Foreign Service officer | September 20, 1979 | October 17, 1979 | Left post, September 27, 1981 | |
| Robert L. Barry | Foreign Service officer | November 25, 1981 | December 8, 1981 | July 12, 1984 | |
| Melvyn Levitsky | Foreign Service officer | September 21, 1984 | November 13, 1984 | Left post, February 6, 1987 | |
| Sol Polansky | Foreign Service officer | June 15, 1987 | September 4, 1987 | Left post, August 17, 1990 | |
| Hugh Kenneth Hill | Foreign Service officer | August 6, 1990 | September 18, 1990 | Left post, September 5, 1993 | |
| William Dale Montgomery | Foreign Service officer | October 8, 1993 | October 27, 1993 | Left post, January 17, 1996 | |
| Avis T. Bohlen | Foreign Service officer | July 2, 1996 | September 5, 1996 | Left post August 13, 1999 | |
| Richard Monroe Miles | Foreign Service officer | August 9, 1999 | September 8, 1999 | Left post February 28, 2002 | |
| James W. Pardew | Foreign Service officer | April 1, 2002 | May 13, 2002 | Left post, July 30, 2005 | |
| John Beyrle | Foreign Service officer | July 9, 2005 | September 8, 2005 | April 28, 2008 | |
| Nancy McEldowney | Foreign Service officer | May 2, 2008 | August 26, 2008 | July 30, 2009 | |
| James B. Warlick, Jr. | Foreign Service officer | December 24, 2009 | January 19, 2010 | September 14, 2012 | |
| Marcie Berman Ries | Foreign Service officer | May 24, 2012 | October 1, 2012 | July 28, 2015 | |
| Eric S. Rubin[3] | Foreign Service officer | December 9, 2015 | January 27, 2016 | July 9, 2019 | |
| Herro Mustafa | Foreign Service officer | September 29, 2019 | October 18, 2019 | March 1, 2023 | |
| Kenneth H. Merten | Foreign Service officer | December 13, 2022 | April 7, 2023 | Incumbent |