The following is a list of people who have served as United States Ambassador to the Organization of American States, or the full title, Representative of the United States of America to the Organization of American States, with the rank and status of Ambassador Extraordinary and Plenipotentiary.
| Name | Years served | OAS Secretary(ies) General | U.S. President(s) |
|---|---|---|---|
| William Dawson | 1948 | Alberto Lleras Camargo | Harry S. Truman |
| Paul C. Daniels | 1948 – 1951 | Alberto Lleras Camargo | Harry S. Truman |
| John C. Dreier | 1951 – 1960 | Alberto Lleras Camargo, Carlos Davila, José A. Mora | Harry S. Truman, Dwight Eisenhower |
| deLesseps S. Morrison | 1961 – 1963 | José A. Mora | John Kennedy |
| Ellsworth Bunker | 1964 – 1966 | José A. Mora | Lyndon Johnson |
| Sol M. Linowitz | 1966 – 1969 | José A. Mora, Galo Plaza | Lyndon Johnson |
| Joseph J. Jova | 1969 – 1974 | Galo Plaza | Richard Nixon |
| William S. Mailliard | 1974 – 1977 | Galo Plaza, Alejandro Orfila | Gerald Ford |
| Gale W. McGee | 1977 – 1981 | Alejandro Orfila | Jimmy Carter, Ronald Reagan |
| J. William Middendorf | 1981 – 1985 | Alejandro Orfila, João Clemente Baena Soares | Ronald Reagan |
| Richard Thomas McCormack | 1985 – 1989 | João Clemente Baena Soares | Ronald Reagan |
| Luigi R. Einaudi | 1989 – 1993 | João Clemente Baena Soares | George H. W. Bush, Bill Clinton |
| Harriet C. Babbitt | 1993 – 1997 | João Clemente Baena Soares, César Gaviria | Bill Clinton |
| Luis J. Lauredo | 2000 – 2001 | César Gaviria | Bill Clinton |
| Roger Francisco Noriega | 2001 – 2003 | César Gaviria | George W. Bush |
| John F. Maisto | 2003 – 2007 | César Gaviria, Miguel Ángel Rodríguez, Luigi R. Einaudi (acting), José Miguel Insulza | George W. Bush |
| Hector Morales | 2007 – 2009 | José Miguel Insulza | George W. Bush |
| Carmen Lomellin | 2009 – Incumbent | José Miguel Insulza | Barack Obama |
Famous quotes containing the words united states, united, states, ambassador, organization and/or american:
“In no other country in the world is the love of property keener or more alert than in the United States, and nowhere else does the majority display less inclination toward doctrines which in any way threaten the way property is owned.”
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“An American Virgin would never dare command; an American Venus would never dare exist.”
—Henry Brooks Adams (18381918)