# 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.

## 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 | Envoy Extraordinary and Minister Plenipotentiary | April 18, 1853 | April 17, 1854 | Franklin Pierce |
| John H. Wheeler | Minister Resident | April 7, 1855 | October 23, 1856 | Franklin Pierce |
| Mirabeau B. Lamar | Minister Resident | February 8, 1858 | May 20, 1859 | James Buchanan |
| Alexander Dimitry | Minister Resident | December 7, 1859 | April 27, 1861 | James Buchanan |
| Andrew B. Dickinson | Minister Resident | July 11, 1861 | January 15, 1863 | Abraham Lincoln |
| Thomas H. Clay | Minister Resident | January 15, 1863 | May 31, 1863 | Abraham Lincoln |
| Andrew B. Dickinson | Minister Resident and Extraordinary | May 31, 1863 | July 29, 1869 | Abraham Lincoln |
| Charles N. Riotte | Minister Resident | July 29, 1869 | January 15, 1873 | Ulysses S. Grant |
| George Williamson | Minister Resident | November 1, 1873 | January 31, 1879 | Ulysses S. Grant |
| Cornelius A. Logan | Minister Resident | July 30, 1879 | April 15, 1882 | Rutherford B. Hayes |
| Henry C. Hall | Minister Resident | August 12, 1882 | November 2, 1882 | Chester A. Arthur |
| Henry C. Hall | Envoy Extraordinary and Minister Plenipotentiary | November 2, 1882 | May 23, 1889 | Chester A. Arthur |
| Lansing B. Mizner | Envoy Extraordinary and Minister Plenipotentiary | August 7, 1889 | December 31, 1890 | Benjamin Harrison |
| Romualdo Pacheco | Envoy Extraordinary and Minister Plenipotentiary | May 21, 1891 | October 13, 1891 | Benjamin Harrison |
| Richard Cutts Shannon | Envoy Extraordinary and Minister Plenipotentiary | October 13, 1891 | April 30, 1893 | Benjamin Harrison |
| Lewis Baker | Envoy Extraordinary and Minister Plenipotentiary | May 13, 1893 | December 9, 1897 | Grover Cleveland |
| William L. Merry | 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 | Theodore Roosevelt |
| 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 | William H. Taft |
| 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 | Franklin D. Roosevelt |
| Meredith Nicholson | Envoy Extraordinary and Minister Plenipotentiary | June 9, 1938 | February 27, 1941 | Franklin D. Roosevelt |
| Pierre de Lagarde Boal | Envoy Extraordinary and Minister Plenipotentiary | July 24, 1941 | March 5, 1942 | Franklin D. Roosevelt |
| James B. Stewart | Envoy Extraordinary and Minister Plenipotentiary | June 12, 1942 | April 14, 1943 | Franklin D. Roosevelt |
| James B. Stewart | Ambassador Extraordinary and Plenipotentiary | April 14, 1943 | January 4, 1945 | Franklin D. Roosevelt |
| 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 | Harry S. Truman |
| Capus M. Waynick | Ambassador Extraordinary and Plenipotentiary | July 12, 1949 | July 22, 1951 | Harry S. Truman |
| Thomas E. Whelan | Ambassador Extraordinary and Plenipotentiary | November 3, 1951 | March 22, 1961 | Harry S. Truman |
| 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 | Jimmy Carter |
| 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 | Ronald Reagan |
| Richard Huntington Melton | Ambassador Extraordinary and Plenipotentiary | May 4, 1988 | July 12, 1988 | Ronald Reagan |
| Jack Leonard | Chargé d'Affaires ad interim | July 11, 1988 | June 21, 1990 | Ronald Reagan |
| 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 | Bill Clinton |
| Oliver P. Garza | Ambassador Extraordinary and Plenipotentiary | September 24, 1999 | August 30, 2002 | Bill Clinton |
| 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 | George W. Bush |
| Robert J. Callahan | Ambassador Extraordinary and Plenipotentiary | August 27, 2008 | July 19, 2011 | George W. Bush |
| Robert R. Downes | Chargé d’Affaires a.i. | July 19, 2011 | March 2012 | Barack Obama |
| Phyllis M. Powers | Ambassador Extraordinary and Plenipotentiary | May 5, 2012 | August 5, 2015 | Barack Obama |
| Laura Farnsworth Dogu | Ambassador Extraordinary and Plenipotentiary | October 6, 2015 | October 30, 2018 | Barack Obama |
| Kevin K. Sullivan | Ambassador Extraordinary and Plenipotentiary | November 14, 2018 | May 19, 2023 | 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 | Present | Joe Biden |