The following is a list of United States ambassadors, or other chiefs of mission, to Paraguay. The title given by the United States State Department to this position is currently Ambassador Extraordinary and Minister Plenipotentiary.
Representative Title Presentationof credentials Terminationof mission Appointed by Charles Ames Washburn Commissioner November 26, 1861 May 13, 1863 Abraham Lincoln Minister Resident May 13, 1863 September 10, 1868 Martin T. McMahon Minister Resident December 12, 1868 June 21, 1869 Andrew Johnson John L. StevensAlso accredited to Uruguay; resident at Montevideo. Minister Resident August 26, 1870 May 19, 1873 Ulysses S. Grant John C. Caldwell Minister Resident December 15, 1874 October 6, 1876 Chargé d'Affaires October 6, 1876 July 10, 1882 William Williams Chargé d'Affaires August 26, 1882 July 21, 1885 Chester A. Arthur John E. Bacon Chargé d'Affaires September 16, 1885 October 23, 1888 Grover Cleveland Minister Resident October 23, 1888 December 26, 1888 George Maney Minister Resident May 19, 1890 August 1891 Benjamin Harrison Envoy Extraordinary and Minister Plenipotentiary August 1891 June 30, 1894 Granville Stuart Envoy Extraordinary and Minister Plenipotentiary September 6, 1894 January 4, 1898 Grover Cleveland William R. Finch Envoy Extraordinary and Minister Plenipotentiary August 3, 1898 May 29, 1905 William McKinley Edward C. O'Brien Envoy Extraordinary and Minister Plenipotentiary August 5, 1905 October 10, 1909 Theodore Roosevelt Edwin V. Morgan Envoy Extraordinary and Minister Plenipotentiary June 29, 1910 July 8, 1911 William H. Taft Nicolai A. Grevstad Envoy Extraordinary and Minister Plenipotentiary October 30, 1911 February 19, 1914 Daniel F. Mooney Envoy Extraordinary and Minister Plenipotentiary May 13, 1914 June 13, 1921 Woodrow Wilson William J. O'Toole Envoy Extraordinary and Minister Plenipotentiary April 3, 1922 February 21, 1924 Warren G. Harding George L. Kreeck Envoy Extraordinary and Minister Plenipotentiary July 22, 1925 February 5, 1930 Calvin Coolidge Post Wheeler Envoy Extraordinary and Minister Plenipotentiary February 12, 1930 April 17, 1933 Herbert Hoover Meredith Nicholson Envoy Extraordinary and Minister Plenipotentiary October 30, 1933 February 3, 1935 Franklin D. Roosevelt Findley B. Howard Envoy Extraordinary and Minister Plenipotentiary October 14, 1935 January 16, 1941 Wesley Frost Envoy Extraordinary and Minister Plenipotentiary April 30, 1941 April 15, 1942 Ambassador Extraordinary and Plenipotentiary April 15, 1942 May 28, 1944 Willard L. Beaulac Ambassador Extraordinary and Plenipotentiary September 13, 1944 May 28, 1947 Fletcher Warren Ambassador Extraordinary and Plenipotentiary October 8, 1947 July 25, 1950 Harry S. Truman Howard H. Tewksbury Ambassador Extraordinary and Plenipotentiary January 9, 1951 February 16, 1952 George P. Shaw Ambassador Extraordinary and Plenipotentiary July 1, 1952 October 31, 1953 Arthur A. Ageton Ambassador Extraordinary and Plenipotentiary September 9, 1954 April 10, 1957 Dwight D. Eisenhower Walter C. Ploeser Ambassador Extraordinary and Plenipotentiary November 6, 1957 September 12, 1959 Harry F. Stimpson, Jr. Ambassador Extraordinary and Plenipotentiary October 23, 1959 March 12, 1961 William P. Snow Ambassador Extraordinary and Plenipotentiary August 4, 1961 June 15, 1967 John F. Kennedy Benigno C. Hernández Ambassador Extraordinary and Plenipotentiary August 9, 1967 July 15, 1969 Lyndon B. Johnson J. Raymond Ylitalo Ambassador Extraordinary and Plenipotentiary August 14, 1969 September 11, 1972 Richard Nixon George W. Landau Ambassador Extraordinary and Plenipotentiary October 13, 1972 October 14, 1977 Robert E. White Ambassador Extraordinary and Plenipotentiary November 30, 1977 January 27, 1980 Jimmy Carter Lyle Franklin Lane Ambassador Extraordinary and Plenipotentiary September 9, 1980 May 21, 1982 Arthur H. Davis, Jr. Ambassador Extraordinary and Plenipotentiary August 6, 1982 September 28, 1985 Ronald Reagan Clyde D. Taylor Ambassador Extraordinary and Plenipotentiary November 12, 1985 September 2, 1988 Timothy Lathrop Towell Ambassador Extraordinary and Plenipotentiary September 26, 1988 April 27, 1991 Jon David Glassman Ambassador Extraordinary and Plenipotentiary August 8, 1991 May 3, 1994 George H. W. Bush Robert Edward Service Ambassador Extraordinary and Plenipotentiary November 18, 1994 October 7, 1997 Bill Clinton Maura Harty Ambassador Extraordinary and Plenipotentiary October 22, 1997 May 30, 1999 David N. Greenlee Ambassador Extraordinary and Plenipotentiary July 19, 2000 January 15, 2003 John F. Keane Ambassador Extraordinary and Plenipotentiary February 11, 2003 October 27, 2005 George W. Bush James Caldwell Cason Ambassador Extraordinary and Plenipotentiary February 1, 2006 August 2, 2008 Liliana Ayalde Ambassador Extraordinary and Plenipotentiary August 11, 2008 August 5, 2011 James H. Thessin Ambassador Extraordinary and Plenipotentiary September 30, 2011 August 2, 2014 Barack Obama Leslie A. Bassett Ambassador Extraordinary and Plenipotentiary January 15, 2015 January 31, 2017 M. Lee McClenny Ambassador Extraordinary and Plenipotentiary February 20, 2018 September 16, 2020 Donald Trump Joseph Salazar Chargé d'Affaires September 16, 2020 March 9, 2022 Donald TrumpJoe Biden Marc Ostfield Ambassador Extraordinary and Plenipotentiary March 9, 2022 January 20, 2025 Joe Biden Amir P. Masliyah"Embajada de los Estados Unidos comunicó designación de Encargado de Negocios", article from the Ministerio de Relaciones Exteriores de la República del Paraguay (Ministry of Foreign Affairs of the Republic of Paraguay). Retrieved on 22 january 2025. Link: https://www.mre.gov.py/index.php/noticias-de-embajadas-y-consulados/embajada-de-los-eeuu-comunico-designacion-de-encargado-de-negocios Chargé d'Affaires January 21, 2025 July 15, 2025 Donald Trump Robert Alter Chargé d'Affaires July 15, 2025 Incumbent Donald Trump
See also Paraguay–United States relations Foreign relations of Paraguay Ambassadors of the United States
References
United States Department of State: Background notes on Paraguay
External links United States Department of State: Chiefs of Mission for Paraguay United States Department of State: Paraguay United States Embassy in Asuncion PDF of Ambassador James H. Thessin's Nomination Testimony