Ambassador of the United States to Mexico
Embajador de Estados Unidos en México
Seal of the United States Department of State
Flag of the United States ambassador
Incumbent Ronald D. Johnson since May 19, 2025
U.S. Department of State
Style	Mr. or Madam Ambassador
Reports to	United States Secretary of State
Seat	Embassy of the United States, Mexico City,Mexico
Appointer	President of the United States with theadvice and consent of theSenate
Term length	At the pleasure of the president
Inaugural holder	Joel Roberts Poinsett (as Minister)
Formation	June 1, 1825
Website	mx.usembassy.gov

TheUnited States has maintained diplomatic relations withMexico since 1823, whenAndrew Jackson was appointed Envoy Extraordinary and Minister Plenipotentiary to that country. Jackson declined the appointment, however, andJoel R. Poinsett became the first U.S. envoy to Mexico in 1825. The rank of the U.S. chief of mission to Mexico was raised from Envoy Extraordinary and Minister Plenipotentiary to Ambassador Extraordinary and Plenipotentiary in 1898.

Normal diplomatic relations between the United States and Mexico have been interrupted on four occasions:

• From December 28, 1836, to July 7, 1839 (following the secession ofTexas)
• From March 28, 1845, to October 2, 1848 (during theMexican–American War)
• From June 21, 1858, to April 6, 1859 (during theWar of the Reform)
• From March 18, 1913, to March 3, 1917 (during theMexican Revolution; the U.S. embassy was closed on April 22, 1914, following the U.S. occupation ofVeracruz). AmbassadorHenry Lane Wilson was recalled after being implicated in a plot (La decena trágica) to overthrowPresidentFrancisco I. Madero. Rather than immediately formally appoint a new ambassador,Woodrow Wilson dispatched ex-Minnesota GovernorJohn Lind as his personal envoy to handle Mexican diplomatic affairs.

In addition, the U.S. legation in Mexico was headed by an interimchargé d'affaires from April 1864 to August 1867, during the final years of theFrench Intervention.

The following is a list of Ambassadors theUnited States has sent toMexico, and other representatives that have served a similar function. The exact title given by theUnited States State Department to this position currently is "Ambassador Extraordinary and Plenipotentiary."

Mexico achieved independence fromSpain in 1821; so the first three men on this list were sent by PresidentMadison during theMexican War of Independence (1810–1821).William Shaler participated in the 1812–13Gutiérrez–Magee Expedition, which was a private military campaign to overthrow the Royalists and resulted in the roadside murder of two provincial governors and about a dozen other officials.

Image	Representative	Title	From	To	Appointed by
	John H. Robinson	Special Diplomatic Agent	1812	1814	James Madison
	James Wilkinson	U.S. Envoy	1816	1825
	Joel Roberts Poinsett	Minister	1825	1829	John Quincy Adams
	Anthony Butler	Special Diplomatic Agent	1829
		Chargé d'Affaires	1829	1835	Andrew Jackson
	William A. Slacum	Special Diplomatic Agent	1835	1836
	Powhatan Ellis	Chargé d'Affaires	1836
	Robert Greenhow	Special Diplomatic Agent	1837
	Powhatan Ellis	Minister	1839	1842	Martin Van Buren
	Henry E. Lawrence	Special Diplomatic Agent	1842		John Tyler
	Waddy Thompson Jr.	Minister	1842	1844
	Moses Yale Beach	Special Diplomatic Agent	1843
	Gilbert L. Thompson	Special Diplomatic Agent	1844
	Wilson Shannon	Minister	1844	1845
	John Slidell	Minister	1845		James K. Polk
	David Conner	Special Diplomatic Agent	1846
	Nathan Clifford	Minister	1848	1849
	Robert P. Letcher	Minister	1849	1852
	Robert Greenhow	Special Diplomatic Agent	1850
	George G. Goss	Special Diplomatic Agent	1850	1852
	George W. Slacum	Special Diplomatic Agent	1851		Millard Fillmore
	Edward Smith	Special Diplomatic Agent	1852
	Alfred Conkling	Minister	1852	1853
	George E. Cooper	Special Diplomatic Agent	1853
	Christopher L. Ward	Special Diplomatic Agent	1853
	James Gadsden	Minister	1853	1856
	Richard S. Spofford	Special Diplomatic Agent	1854		Franklin Pierce
	John Forsyth Jr.	Minister	1856	1858
	William M. Churchwell	Special Diplomatic Agent	1858		James Buchanan
	Alfred Mordecai	Special Diplomatic Agent	1858
	Duff Green	Special Diplomatic Agent	1859
	David R. Porter	Special Diplomatic Agent	1859
	Robert Milligan McLane	Minister	1859	1860
	Henry Roy de la Reintrie	Special Diplomatic Agent	1860
	John B. Weller	Minister	1860	1861
	Thomas Corwin	Minister	1861	1864
	Robert W. Shufelt	Special Diplomatic Agent	1862		Abraham Lincoln
	Lewis D. Campbell	Minister	1866	1867	Andrew Johnson
	Marcus Otterbourg	Minister	1867
	William S. Rosecrans	Minister	1868	1869
	Thomas H. Nelson	Minister	1869	1873
	John W. Foster	Minister	1873	1880	Ulysses S. Grant
	Philip Hicky Morgan	Minister	1880	1885	Rutherford B. Hayes
	Henry R. Jackson	Minister	1885	1886
	Thomas Courtland Manning	Minister	1886	1887	Grover Cleveland
	Edward S. Bragg	Minister	1888	1889
	Thomas Ryan	Minister	1889	1893
	Isaac P. Gray	Minister	1893	1895
	Matt Whitaker Ransom	Minister	1895	1897	Grover Cleveland
	Powell Clayton	Minister	1897	1898

Image	Ambassador	Presentation	Termination	Appointed by
	Powell Clayton	January 3, 1899	May 26, 1905	William McKinley
	Edwin H. Conger	June 15, 1905	August 3, 1905	Theodore Roosevelt
	David E. Thompson	March 8, 1906	December 1, 1909
	Henry Lane Wilson	March 5, 1910	July 17, 1913	William Howard Taft
	Henry P. Fletcher	March 3, 1917	January 25, 1919	Woodrow Wilson
	Charles B. Warren	March 31, 1924	July 22, 1924	Calvin Coolidge
	James R. Sheffield	October 15, 1924	June 5, 1927
	Dwight Morrow	October 29, 1927	September 17, 1930
	J. Reuben Clark	November 28, 1930	February 14, 1933	Herbert Hoover
	Josephus Daniels	April 24, 1933	November 9, 1941	Franklin D. Roosevelt
	George S. Messersmith	February 24, 1942	May 15, 1946
	Walter C. Thurston	June 17, 1946	November 4, 1950	Harry S. Truman
	William O'Dwyer	November 23, 1950	December 6, 1952
	Francis White	April 28, 1953	June 30, 1957	Dwight D. Eisenhower
	Robert C. Hill	July 25, 1957	December 1, 1960
	Thomas C. Mann	May 8, 1961	December 22, 1963	John F. Kennedy
	Fulton Freeman	April 6, 1964	January 6, 1969	Lyndon B. Johnson
	Robert H. McBride	July 22, 1969	January 25, 1974	Richard Nixon
	Joseph J. Jova	January 30, 1974	February 21, 1977
	Patrick Lucey	July 19, 1977	October 31, 1979	Jimmy Carter
	Julian Nava	May 7, 1980	April 3, 1981
	John Gavin	June 5, 1981	June 10, 1986	Ronald Reagan
	Charles J. Pilliod Jr.	November 4, 1986	April 7, 1989
	John Negroponte	July 3, 1989	September 5, 1993	George H. W. Bush
	James R. Jones	September 10, 1993	June 25, 1997	Bill Clinton
	Jeffrey Davidow	August 5, 1998	September 14, 2002
	Tony Garza	November 22, 2002	January 20, 2009	George W. Bush
	Carlos Pascual	August 9, 2009	March 19, 2011	Barack Obama
	Earl Anthony Wayne	September 6, 2011	July 31, 2015
	Roberta S. Jacobson	June 20, 2016	May 5, 2018
	Christopher Landau	August 26, 2019	January 20, 2021	Donald Trump
	Ken Salazar	September 14, 2021	January 7, 2025	Joe Biden
	Ronald D. Johnson	May 19, 2025	Incumbent	Donald Trump

• Ambassador of Mexico to the United States
• Ambassadors of the United States
• Embassy of the United States, Mexico City
• Foreign relations of Mexico
• Mexico–United States relations

• United States Department of State: Background notes on Mexico
•  This article incorporatespublic domain material fromU.S. Bilateral Relations Fact Sheets.United States Department of State.

• United States Department of State: Chiefs of Mission for Mexico
• United States Department of State: Mexico
• United States Embassy in Mexico City

• Lists of ambassadors of the United States
• Ambassadors of the United States to Mexico
• Lists of ambassadors to Mexico

• Articles with short description
• Short description is different from Wikidata
• Use mdy dates from October 2017
• Use American English from June 2023
• All Wikipedia articles written in American English
• Articles with hCards
• Wikipedia articles incorporating text from the United States Department of State Background Notes