DATE |
NAME/MISSION |
| April 15, 1904 | LEGATION OPENED |
| April 15, 1904 | Sr. Don Cecilio Baez, E.E. and M.P. |
| January 1907 | LEGATION REMOVED |
| March 1913 | LEGATION REPLACED |
| February 18, 1913 | Hector Velazquez, E.E. |
| September 23, 1918 | Manuel Gondra, E.E. and M.P. |
| July 12, 1920 | William Wallace White, Consul General in N.Y. in charge of Legation |
| January 29, 1925 | Dr. Don Eusebio Ayala, E.E. and M.P. |
| September 11, 1925 | Dr. Juan V. Ramirez, Charge d'Affaires a.i. |
| April 1, 1929 | Sr. Don Pablo M. Ynsfran, Charge d'Affaires a.i. |
| February 25, 1933 | William Wallace White, Consul General in N.Y. |
| April 11, 1933 | Sr. Dr. Don Enrique Bordenave, E.E. and M.P. |
| April 1926 List | William Wallace White, Consul General in N.Y. in charge of Legation |
| June 10, 1936 | Sr. Dr. Don Alfredo Busk Codas, Appt. E.E. & M.P. |
| June 22, 1936 |
E.E. and M.P. (Minister resigned on September 4, 1937. His name continued to appear on List with notation of resignation until removal of Legation from January 1938 List) |
| January 1938 List | LEGATION REMOVED |
| May 1938 List | LEGATION REPLACED |
| May 3, 1938 | General Jose1 Felix Estigarribia, Appt. E.E. and M.P. |
| May 19, 1938 | E.E. and M.P. |
| June 17, 1939 | Pablo M. Insfran, Charge d'Affaires a.i. |
| November 8, 1939 | Dr. Horacio A. Fernandez, Appt. E.E. and M.P. |
| November 14, 1939 | E.E. and M.P. |
| November 28, 1940 | Sr. Dr. Don Juan Jose Soler, Appt. E.E. and M.P. |
| December 19, 1940 | E.E. and M.P. |
| March 31, 1942 | LEGATION RAISED TO EMBASSY |
| March 23, 1942 | Sr. Dr. Don Celso R. Velazquez, Appt. Amb. E. and P. |
| March 31, 1942 | Amb. E. and P. |
| March 26, 1946 | Sr. Don Juan B. Ayala, Appt. Amb. E. and P. |
| April 9, 1946 | Amb. E. and P. |
| August 21, 1946 | Sr. Dr. Don Cesar P. Acosta, Charge d'Affaires a.i |
| June 23, 1947 | Sr. Dr. Don Guillermo Enciso, Appt. Amb. E&P |
| July 2, 1947 | Amb. E. and P. |
| April 19, 1948 | Sr. Dr. Don Juan Felix Morales, Appt. Amb. E&P |
| April 23, 1948 | Amb. E. and P. |
| January 31, 1949 | SEVERED RELATIONS |
| April 13, 1949 | RESUMED RELATIONS |
| August 1, 1949 | Sr. Dr. Don Luis Oscar Boettner, Appt. Amb. E&P |
| August 5, 1949 | Amb. E. and P. |
| March 17, 1954 | Sr. Dr. Don Guillermo Enciso-Velloso, Appt. Amb. E. and P. |
| March 26, 1954 | Amb. E. and P. |
| December 18, 1956 | Sr. Dr. Don Osvaldo Chaves, Appt. Amb. E. and P. |
| December 28, 1956 | Amb. E. and P. |
| July 8, 1958 | Sr. Dr. Don Juan Plate, Appt. Amb. E. and P. |
| July 29, 1958 | Amb. E. and P. |
| March 7, 1968 | Dr. Roque Jacinto Avila, Appt. Amb. E. and P. |
| March 15, 1968 | Amb. E. and P. |
| January 10, 1973 | Miguel Solano Lopez, Appt. Amb. E. and P. |
| March 2, 1973 | Amb. E. and P. |
| October 18, 1976 | Mr. Juan Alberto Llanes, Charge d'Affaires ad interim |
| May 10, 1977 | Mario Lopez Escobar, Apptd. Amb. E. and P. |
| May 16, 1977 | Amb. E. and P. |
| October 15, 1983 | Lic Juan Carlos A. Hrase Von Bargen, Minister, Charge d'Affaires ad interim |
| January 17, 1984 | Marcos Martinez Mendieta, Apptd. Amb. E. and P. |
| March 13, 1984 | Amb. E. and P. |
| April 27, 1992 | Juan Esteban Aquirre Martinez , Appt. |
| May 5, 1992 | Amb. E. and P. |
| January 11, 1995 | Jorge G. Prieto Conti (copies of credentials) |
| March 20, 1995 | Amb. E. and P. (WH credentials) |
| August 9, 1999 | Juan Esteban Aguirre Martinez , Appt. Amb. |
| August 10, 1999 | Amb. E. and P. |
| August 2, 2000 | Leila Teresa Rachid-Cowies, Appt. |
| September 5, 2000 | Amb. E. and P. |
| December 11, 2003 | James Spalding, Appt. |
| March 31, 2004 | Amb. E. and P. |
| November 19, 2010 | Rigoberto Gauto Vielman, Appt. |
| February 24, 2010 | Amb. E. and P. |
| January 9, 2013 | Fernando Antonio Pfannl Caballero, Appt. |
| January 14, 2013 | Amb. E. and P. |
|
Special Terms* [Amb.] E.E. and M.P.= Envoy Extraordinary and Minister Plenipotentiary [Charge d'Affaires] a.i.= ad interim Amb. E. & P. = Ambassador Extraordinary and Plenipotentiary |
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