The United States ambassador to Argentina is the official representative of the president of the United States to the head of state of Argentina.

Argentina had declared its independence from Spain in 1816 and there followed a series of revolutionary wars until 1861 when the nation was united. The United States recognized the government of Buenos Aires, the predecessor to Argentina, on January 27, 1823. Caesar Augustus Rodney was appointed as American Minister Plenipotentiary to Buenos Aires. Between 1854 and 1866, U.S. ambassadors were commissioned to the Argentine Confederation. Since 1867, ambassadors have been commissioned to the Argentine Republic.

Diplomatic relations between the U.S. and Argentina were interrupted but not severed in June 1944 when the U.S. government recalled its ambassador in a dispute with the newly appointed dictator Edelmiro Julián Farrell. The U.S. government believed that Farrell was not committed to the defense of the Western Hemisphere against the Axis powers. Normal relations were resumed with the appointment of a new ambassador in April 1945 when Argentina declared war against Germany.

The official residence of the U.S. Ambassador in Buenos Aires is the Bosch Palace, listed on the State Department's Register of Culturally Significant Property.

Ambassadors and chiefs of mission

+#NameAppointedPresented credentialsTerminated missionNotes1Caesar A. RodneyCommissioned to the Republic of Buenos Aires.January 27, 1823December 27, 1823Died at post, June 10, 1824 -John Murray ForbesMarch 9, 1825August 20, 1825Died at post June 14, 1831Chargé d'affaires -Francis BayliesJanuary 3, 1832June 15, 1832September 26, 1832Chargé d'affaires -William Brent, Jr.June 14, 1844November 15, 1844Presented recall July 7, 1846Chargé d'affaires -William A. HarrisCommissioned to the Argentine Confederation.February 19, 1846July 7, 1846Probably presented recall before September 12, 1851Chargé d'affaires -John S. PendletonFebruary 27, 1851September 12, 1851 or soon thereafterRelinquished charge from Montevideo, Uruguay March 31, 1854Chargé d'affaires2James A. PedenJune 29, 1854December 1, 1854Presented recall December 1, 1858Office upgraded to Minister Resident. U.S. Legation moved to Paraná.3Benjamin C. YanceyJune 14, 1858December 1, 1858Transmitted recall by note from Montevideo, Uruguay, September 30, 18594John F. CushmanJuly 18, 1859December 22, 1859Relinquished charge February 17, 1861 U.S. Legation moved back from Paraná to Buenos Aires in 1862.5Robert M. PalmerMarch 28, 1861October 5, 1861about April 12, 18626Robert C. KirkMarch 4, 1862June 21, 1862July 26, 18667Alexander AsbothBeginning with Ambassador Asboth in 1866, all U.S. ambassadors were commissioned to the Argentine Republic.Between 1867 and 1870, the U.S. Ambassador to Argentina was concurrently commissioned to Uruguay, while resident in Buenos Aires.March 12, 1866October 20, 1866Died at post January 21, 18688Henry G. WorthingtonJune 5, 1868September 11, 1868Presented recall July 8, 18699Robert C. KirkApril 16, 1869July 8, 1869Presented recall November 4, 187110Julius WhiteWhite was commissioned during a recess of the Senate but declined reappointment during the next Congress.December 12, 1872May 6, 1873November 14, 187311Thomas O. OsbornOsborn was commissioned during a recess of the Senate and recommissioned after confirmation on July 7, 1884.February 10, 1874May 21, 1874Probably presented recall on or before October 15, 1885Title/office upgraded to Minister Resident/Consul General12Bayless W. HannaHanna was commissioned during a recess of the Senate and recommissioned after confirmation on December 15, 1881.June 17, 1885October 15, 1885July 8, 1889 Title/office upgraded to Envoy Extraordinary and Minister Plenipotentiary in 1887.13John R. G. PitkinPitkin was commissioned during a recess of the Senate and recommissioned after confirmation on January 9, 1890.July 26, 1889October 31, 1889August 15, 189314William I. BuchananJanuary 26, 1894May 19, 1894July 11, 189915William Paine LordLord was commissioned during a recess of the Senate and recommissioned after confirmation on December 14, 1899.October 16, 1899February 14, 1900March 27, 190316John BarrettBarrett was commissioned during a recess of the Senateand recommissioned after confirmation November 16, 1903.July 2, 1903December 21, 1903April 27, 190417Arthur M. BeaupreMarch 17, 1904June 17, 1904May 2, 190818Spencer F. EddyApril 2, 1908August 27, 1908January 2, 190919Charles Hitchcock SherrillApril 1, 1909June 30, 1909September 16, 191020John W. Garrett – Career FSODecember 14, 1911February 29, 1912November 22, 191321Frederic Jesup Stimson – Political appointeeOctober 1, 1914January 8, 1915April 21, 1921In 1914 the office of Envoy was upgraded to Ambassador Extraordinary and Plenipotentiary.22John W. Riddle – Career FSONovember 18, 1921March 8, 1922May 28, 192523Peter Augustus Jay – Career FSOMarch 18, 1925September 24, 1925December 30, 192624Robert Woods Bliss – Career FSOFebruary 17, 1927September 9, 1927April 29, 193325Alexander W. Weddell – Career FSOJune 3, 1933September 18, 1933October 29, 193826Norman Armour – Career FSOMay 18, 1939June 19, 1939Recalled June 27, 1944; left post June 29, 1944 Normal diplomatic relations interrupted from February 1944 to April 194527Spruille Braden – Political appointeeMay 8, 1945May 21, 1945September 23, 194528George S. Messersmith – Career FSOApril 12, 1946May 23, 1946June 12, 194729James Cabell Bruce – Political appointeeJuly 12, 1947August 21, 1947August 20, 194930Stanton Griffis – Political appointeeSeptember 22, 1949November 17, 1949September 23, 195031Ellsworth Bunker – Political appointeeMarch 13, 1951May 8, 1951March 12, 195232Albert F. Nufer – Career FSOMay 29, 1952August 14, 1952May 12, 195633Willard L. Beaulac – Career FSOPresident Eisenhower nominated Beaulac July 17, 1953 to be Ambassador to Argentina, but the nomination was withdrawn before the Senate acted upon it. Beaulac was instead given a recess appointment as Ambassador to Chile. He was again nominated for the ambassadorship to Argentina in 1956.May 10, 1956June 1, 1956August 2, 196034Roy R. Rubottom, Jr. – Career FSORubottom was commissioned during a recess of the Senate on July 29, 1960 but he declined the appointment.August 27, 1960October 20, 1960October 19, 196135Robert M. McClintock – Career FSOFebruary 6, 1962February 14, 1962May 10, 196436Edwin M. Martin – Career FSOJanuary 29, 1964June 11, 1964January 5, 196837Carter L. Burgess – Political appointeeJuly 24, 1968August 21, 1968March 14, 196938John Davis Lodge – Political appointeeMay 27, 1969July 23, 1969November 10, 197339Robert C. Hill – Political appointeeDecember 19, 1973February 15, 1974May 10, 197740Raul Hector Castro – Political appointeeSeptember 15, 1977November 16, 1977July 30, 198041Harry W. Shlaudeman – Career FSOOctober 2, 1980November 4, 1980August 26, 198342Frank V. Ortiz, Jr. – Career FSONovember 18, 1983November 29, 1983August 29, 198643Theodore E. Gildred – Political appointeeOctober 16, 1986November 6, 1986May 31, 198944Terence A. Todman – Career FSOApril 20, 1989June 13, 1989June 28, 199345James Richard Cheek – Career FSOMay 28, 1993July 19, 1993December 18, 1996 -Ronald D. Godard – Career FSO—December 18, 1996October 1997Chargé d'affaires -Manuel Rocha – Career FSO—October 1997July 3, 2000Chargé d'affaires46James Donald Walsh – Career FSOJune 14, 2000July 3, 2000May 21, 200347Lino Gutierrez – Career FSOApril 16, 2003October 15, 2003April 8, 200648Earl Anthony Wayne – Career FSOAugust 1, 2006January 19, 2007April 6, 200949Vilma Socorro Martínez – Political appointeeJuly 24, 2009September 18, 2009July 6, 201350Noah Mamet – political appointeeDecember 2, 2014January 21, 2015January 20, 201751Edward C. Prado – political appointeeMarch 22, 2018May 15, 2018January 20, 2021 -MaryKay Carlson – Career FSOJanuary 20, 2021January 24, 2022Chargé d'affaires52Marc Stanley – political appointeeDecember 18, 2021January 24, 2022January 17, 2025 -Abigail L. DresselJanuary 17, 2025June 27, 2025Chargé d'affaires -Lydia BarrazaJune 27, 2025July 11, 2025Chargé d'affaires -Heidi G. RápaloJuly 11, 2025October 31, 2025Chargé d'affaires53Peter Lamelas – political appointeeSeptember 18, 2025November 4, 2025Present

Notes

See also Argentina – United States relations Foreign relations of Argentina Ambassadors of the United States

References United States Department of State: Background notes on Argentina

External links United States Department of State: Chiefs of Mission for Argentina United States Department of State: Argentina United States Embassy in Buenos Aires