List of ambassadors of the United States to Nicaragua

The following is a list of United States ambassadors, or other chiefs of mission, to Nicaragua. The title given by the United States State Department to this position is currently Ambassador Extraordinary and Plenipotentiary.

Ambassador of the United States to Nicaragua
Seal of the United States Department of State
Flag of a United States ambassador
Incumbent Kevin O'Reilly Chargé d'Affairs ad interim since June 28, 2023
Nominator	The president of the United States
Appointer	The president with Senate advice and consent
Inaugural holder	John B. Kerr as Chargé d'Affaires
Formation	February 18, 1851
Website	Ambassador to Nicaragua

Ambassadors

Representative	Title	Presentation of credentials	Termination of mission	Appointed by
John B. Kerr	Chargé d'Affaires	February 18, 1851	June 1, 1853	Millard Fillmore
Solon Borland[1]	Envoy Extraordinary and Minister Plenipotentiary	April 18, 1853	April 17, 1854	Franklin Pierce
John H. Wheeler	Minister Resident	April 7, 1855	October 23, 1856
Mirabeau B. Lamar[2]	Minister Resident	February 8, 1858	May 20, 1859	James Buchanan
Alexander Dimitry[3]	Minister Resident	December 7, 1859	April 27, 1861
Andrew B. Dickinson	Minister Resident	July 11, 1861	January 15, 1863	Abraham Lincoln
Thomas H. Clay	Minister Resident	January 15, 1863	May 31, 1863
Andrew B. Dickinson	Minister Resident and Extraordinary	May 31, 1863	July 29, 1869
Charles N. Riotte	Minister Resident	July 29, 1869	January 15, 1873	Ulysses S. Grant
George Williamson[4]	Minister Resident	November 1, 1873	January 31, 1879
Cornelius A. Logan[4]	Minister Resident	July 30, 1879	April 15, 1882	Rutherford B. Hayes
Henry C. Hall[4]	Minister Resident	August 12, 1882	November 2, 1882	Chester A. Arthur
	Envoy Extraordinary and Minister Plenipotentiary	November 2, 1882	May 23, 1889
Lansing B. Mizner[4]	Envoy Extraordinary and Minister Plenipotentiary	August 7, 1889	December 31, 1890	Benjamin Harrison
Romualdo Pacheco[4]	Envoy Extraordinary and Minister Plenipotentiary	May 21, 1891	October 13, 1891
Richard Cutts Shannon[5]	Envoy Extraordinary and Minister Plenipotentiary	October 13, 1891	April 30, 1893
Lewis Baker[5]	Envoy Extraordinary and Minister Plenipotentiary	May 13, 1893	December 9, 1897	Grover Cleveland
William L. Merry[6]	Envoy Extraordinary and Minister Plenipotentiary	March 1, 1899	August 24, 1908	William McKinley
John Gardner Coolidge	Envoy Extraordinary and Minister Plenipotentiary	August 24, 1908	November 21, 1908	Theodore Roosevelt
John H. Gregory, Jr.	Chargé d'Affaires ad interim	November 21, 1908	March 12, 1909
Elliott Northcott	Envoy Extraordinary and Minister Plenipotentiary	February 21, 1911	June 23, 1911	William H. Taft
George T. Weitzel	Envoy Extraordinary and Minister Plenipotentiary	January 22, 1912	April 19, 1913
Benjamin L. Jefferson	Envoy Extraordinary and Minister Plenipotentiary	September 5, 1913	October 24, 1921	Woodrow Wilson
John E. Ramer	Envoy Extraordinary and Minister Plenipotentiary	December 30, 1921	April 5, 1925	Warren G. Harding
Charles C. Eberhardt	Envoy Extraordinary and Minister Plenipotentiary	August 7, 1925	May 10, 1929	Calvin Coolidge
Matthew E. Hanna	Envoy Extraordinary and Minister Plenipotentiary	April 11, 1930	September 6, 1933	Herbert Hoover
Arthur Bliss Lane	Envoy Extraordinary and Minister Plenipotentiary	December 7, 1933	March 14, 1936	Franklin D. Roosevelt
Boaz W. Long	Envoy Extraordinary and Minister Plenipotentiary	March 19, 1936	April 1, 1938
Meredith Nicholson	Envoy Extraordinary and Minister Plenipotentiary	June 9, 1938	February 27, 1941
Pierre de Lagarde Boal	Envoy Extraordinary and Minister Plenipotentiary	July 24, 1941	March 5, 1942
James B. Stewart	Envoy Extraordinary and Minister Plenipotentiary	June 12, 1942	April 14, 1943
	Ambassador Extraordinary and Plenipotentiary	April 14, 1943	January 4, 1945
Fletcher Warren	Ambassador Extraordinary and Plenipotentiary	May 9, 1945	May 4, 1947	Harry S. Truman
George P. Shaw	Ambassador Extraordinary and Plenipotentiary	September 1, 1948	June 8, 1949
Capus M. Waynick	Ambassador Extraordinary and Plenipotentiary	July 12, 1949	July 22, 1951
Thomas E. Whelan	Ambassador Extraordinary and Plenipotentiary	November 3, 1951	March 22, 1961
Aaron S. Brown	Ambassador Extraordinary and Plenipotentiary	April 21, 1961	May 3, 1967	John F. Kennedy
Kennedy M. Crockett	Ambassador Extraordinary and Plenipotentiary	August 21, 1967	April 19, 1970	Lyndon B. Johnson
Turner B. Shelton	Ambassador Extraordinary and Plenipotentiary	November 20, 1970	August 11, 1975	Richard Nixon
James D. Theberge	Ambassador Extraordinary and Plenipotentiary	August 11, 1975	June 8, 1977	Gerald Ford
Mauricio Solaún	Ambassador Extraordinary and Plenipotentiary	September 30, 1977	February 26, 1979	Jimmy Carter
Lawrence A. Pezzullo	Ambassador Extraordinary and Plenipotentiary	July 31, 1979	August 18, 1981
Anthony Cecil Eden Quainton	Ambassador Extraordinary and Plenipotentiary	March 26, 1982	May 6, 1984	Ronald Reagan
Harry E. Bergold, Jr.	Ambassador Extraordinary and Plenipotentiary	May 31, 1984	July 1, 1987
Richard Huntington Melton	Ambassador Extraordinary and Plenipotentiary	May 4, 1988	July 12, 1988[7]
Jack Leonard	Chargé d'Affaires ad interim	July 11, 1988	June 21, 1990
Harry W. Shlaudeman	Ambassador Extraordinary and Plenipotentiary	June 21, 1990	March 14, 1992	George H. W. Bush
Ron Godard	Chargé d’Affaires a.i.	March 14, 1992	September 8, 1993
John Francis Maisto	Ambassador Extraordinary and Plenipotentiary	September 8, 1993	November 15, 1996	Bill Clinton
Lino Gutierrez	Ambassador Extraordinary and Plenipotentiary	December 5, 1996	July 21, 1999
Oliver P. Garza	Ambassador Extraordinary and Plenipotentiary	September 24, 1999	August 30, 2002
Barbara C. Moore	Ambassador Extraordinary and Plenipotentiary	September 13, 2002	July 15, 2005	George W. Bush
Paul A. Trivelli	Ambassador Extraordinary and Plenipotentiary	September 9, 2005	August 6, 2008[8]
Robert J. Callahan	Ambassador Extraordinary and Plenipotentiary	August 27, 2008	July 19, 2011[9]
Robert R. Downes	Chargé d’Affaires a.i.	July 19, 2011	March 2012	Barack Obama
Phyllis M. Powers[10]	Ambassador Extraordinary and Plenipotentiary	May 5, 2012	August 5, 2015
Laura Farnsworth Dogu[10]	Ambassador Extraordinary and Plenipotentiary	October 6, 2015	October 30, 2018
Kevin K. Sullivan[11]	Ambassador Extraordinary and Plenipotentiary	November 14, 2018	May 19, 2023[12]	Donald Trump
Carla Fleharty	Chargé d’Affaires a.i.	May 20, 2023	June 28, 2023	Joe Biden
Kevin O'Reilly	Chargé d’Affaires a.i.	June 28, 2023[13]	Present	Joe Biden