Principal Officers and Chiefs of Mission, by Name: R

Note: Career Foreign Service appointees are asterisked.

• Maxwell M. Rabb (1910–2002)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1981–1989)
• *Robert Rackmales (1937–)
  • Chargé d’Affaires ad interim, Socialist Federal Republic of Yugoslavia (1993)
• Stephen Geoffrey Rademaker (1959–)
  • Assistant Secretary of State for Arms Control (2002–2005)
• *Marguerita Dianne Ragsdale (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (2003–2006)
• Condy Raguet (1784–1842)
  • Chargé d’Affaires, Brazil (1825–1827)
• Mary (Molly) Millonzi Raiser (1942–)
  • Chief of Protocol (1993–1997)
• Azita Raji (1961–)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (2016–2017)
• John Rakolta Jr. (?–)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (2019)
• John Edward Ramer (1870–1926)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1921–1925)
• *William C. Ramsay (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (1993–1996)
• Sidney Anders Rand (1916–2003)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1979–1981)
• Alexander Williams Randall (1819–1872)
  • Minister Resident, Holy See (1861–1862)
• Edmund Jennings Randolph (1753–1813)
  • Secretary of State (1794–1795)
• John Randolph (1773–1833)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1830)
• Clark T. Randt Jr. (1945–)
  • Ambassador Extraordinary and Plenipotentiary, China (2001–2009)
• *Karl Lott Rankin (1898–1991)
  • Chargé d’Affaires ad interim, China (1953)
  • Ambassador Extraordinary and Plenipotentiary, China (1953–1957)
  • Ambassador Extraordinary and Plenipotentiary, Socialist Federal Republic of Yugoslavia (1957–1961)
• *Michael Edward Ranneberger (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1999–2002)
  • Ambassador Extraordinary and Plenipotentiary, Kenya (2006–2011)
• *David M. Ransom (1938–2003)
  • Ambassador Extraordinary and Plenipotentiary, Bahrain (1994–1997)
• *Marjorie Ann Ransom (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (Nomination of May 9, 2000, not acted upon by the Senate.)
• Matthew Whitaker Ransom (1826–1904)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1895–1897)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1895)
• *Arnold Lewis Raphel (1943–1988)
  • Ambassador Extraordinary and Plenipotentiary, Pakistan (1987–1988)
• *Robin Lynn Raphel (1947–)
  • Assistant Secretary of State for South and Central Asian Affairs (1993–1997)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (1997–2000)
• Stephen J. Rapp (1949–)
  • Ambassador at Large (2009–2015)
• *Glen R. Rase (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Brunei (1996–1999)
• Myer Rashish (1924–1995)
  • Under Secretary for Economic Growth, Energy, and the Environment (1981–1982)
• *Elizabeth Raspolic (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (1995–1998)
  • Ambassador Extraordinary and Plenipotentiary, Sao Tome and Principe (1995–1998)
• Abraham C. Ratshesky (Radzkey) (1864–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Czechoslovakia (1930–1932)
• *Scott M. Rauland (?–)
  • Chargé d’Affaires, Belarus (2016)
• *Christian Magelssen Ravndal (1899–1984)
  • Director General of the Foreign Service (1947–1949)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1949–1951)
  • Envoy Extraordinary and Minister Plenipotentiary, Hungary (1951–1956)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1956–1960)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1960–1961)
• James Wilson Rawlings (1929–2013)
  • Ambassador Extraordinary and Plenipotentiary, Zimbabwe (1986–1989)
• *Nancy Vivian Rawls (1926–1985)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1979–1983)
• *David P. Rawson (1941–)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (1993–1996)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1995–1999)
• *Charles Aaron Ray (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (2002–2005)
  • Ambassador Extraordinary and Plenipotentiary, Zimbabwe (2009–2012)
• Dixy Lee Ray (1914–1994)
  • Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs (1975)
• Henry Jarvis Raymond (1820–1869)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (Not commissioned; nomination tabled by the Senate.)
• *Michael A. Raynor (1962–)
  • Ambassador Extraordinary and Plenipotentiary, Benin (2012–2015)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (2017)
• Edward Dominic Re (1920–2006)
  • Assistant Secretary of State for Educational and Cultural Affairs (1968–1969)
• Benjamin Huger Read (1925–1993)
  • Executive Secretary (1963–1969)
  • Deputy Under Secretary of State for Management (1977–1978)
  • Under Secretary of State for Management (1978–1981)
• John Meredith Read Jr. (1837–1896)
  • Minister Resident, Greece (1873–1877)
  • Chargé d’Affaires, Greece (1876–1879)
• *Robert Borden Reams (1904–1994)
  • Chargé d’Affaires ad interim, Denmark (1941)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Benin (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Niger (1960–1961)
• *Eunice S. Reddick (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (2007–2010)
  • Ambassador Extraordinary and Plenipotentiary, Sao Tome and Principe (2007–2010)
  • Ambassador Extraordinary and Plenipotentiary, Niger (2014–2017)
  • Chargé d’Affaires ad interim, Burundi (2019)
• *Charles Edgar Redman (1943–)
  • Assistant Secretary of State for Public Affairs (1987–1989)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1989–1992)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1994–1996)
• *Frankie Annette Reed (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (2011–2015)
  • Ambassador Extraordinary and Plenipotentiary, Kiribati (2011–2015)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (2011–2015)
  • Ambassador Extraordinary and Plenipotentiary, Nauru (2011–2015)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (2011–2015)
• John Hathaway Reed (1921–2012)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1976–1977)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1976–1977)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1981–1985)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1981–1985)
• Joseph Verner Reed Jr. (1937–2016)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (1981–1985)
  • Chief of Protocol (1989–1991)
• *Leslie Edgar Reed (1890–1972)
  • Chargé d’Affaires ad interim, Greece (1941)
• *Helen Patricia Reed-Rowe (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Palau (2010–2013)
• William Bradford Reed (1806–1876)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1857–1858)
• *Philip Thomas Reeker (1965–)
  • Ambassador Extraordinary and Plenipotentiary, Macedonia (2008–2011)
• Grover Joseph Rees 3rd (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Timor-Leste (2002–2006)
• Otto Juan Reich (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1986–1989)
  • Assistant Secretary of State for Western Hemisphere Affairs (2002)
• Ogden Rogers Reid (1925–)
  • Ambassador Extraordinary and Plenipotentiary, Israel (1959–1961)
• Whitelaw Reid (1837–1912)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1889–1892)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1905–1912)
• *Joel Richard Reifman (1959–)
  • Chargé d’Affaires ad interim, Eritrea (2012)
• *David D. Reimer (?–)
  • Ambassador Extraordinary and Plenipotentiary, Seychelles (2017)
  • Ambassador Extraordinary and Plenipotentiary, Mauritius (2017)
• *Herbert Reiner Jr. (1916–1999)
  • Chargé d’Affaires ad interim, Sierra Leone ()
• *George Frederick Reinhardt (1911–1971)
  • Ambassador Extraordinary and Plenipotentiary, South Vietnam (1955–1957)
  • Counselor (1957–1960)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (1960–1961)
  • Envoy Extraordinary and Minister Plenipotentiary, Yemen (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1961–1968)
• *John Edward Reinhardt (1920–2016)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (1971–1975)
  • Assistant Secretary of State for Public Affairs (1975–1977)
  • Director of the U.S. Information Agency (1977–1978)
  • Director of the U.S. Information Agency (1978–1980)
• *Judy Rising Reinke (?–)
  • Ambassador Extraordinary and Plenipotentiary, Montenegro (2018)
• Paul Samuel Reinsch (1869–1923)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1913–1919)
• Edwin Oldfather Reischauer (1910–1990)
  • Ambassador Extraordinary and Plenipotentiary, Japan (1961–1966)
• Mitchell Reiss (1957–)
  • Director of Policy Planning (2003–2005)
• Henry Remsen Jr. (1762–1843)
  • Chief Clerk (1789)
  • Chief Clerk (1790–1792)
• *George Willmot Renchard (1907–1982)
  • Ambassador Extraordinary and Plenipotentiary, Burundi (1968–1969)
• Abraham Rencher (1798–1883)
  • Chargé d’Affaires, Portugal (1843–1847)
• *Arlene Render (1943–)
  • Ambassador Extraordinary and Plenipotentiary, The Gambia (1990–1993)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (1996–1999)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (2001–2004)
• *James Malone Rentschler (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Malta (1982–1985)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (Nomination withdrawn on September 11, 1986, before the Senate acted upon it.)
• Luther Irvin Replogle (1902–1981)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1969–1972)
• Michael Retzer (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (2005–2007)
• Barbara Retzlaff (1954–)
  • Director of the Bureau of Budget and Planning (2012–2015)
• Nicholas Andrew Rey (1938–2009)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1993–1997)
• Matthew A. Reynolds (1964–)
  • Assistant Secretary of State for Legislative Affairs (2008–2009)
• Mercer Reynolds III (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (2001–2003)
  • Ambassador Extraordinary and Plenipotentiary, Liechtenstein (2001–2003)
• Robert McConnell Reynolds (1826–1885)
  • Minister Resident, Bolivia (1874–1876)
• Julissa Reynoso (1975–)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (2012–2014)
• Charles Edward Rhetts (1910–1971)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1962–1964)
• Albert Rhodes (1840–1894)
  • Chargé d’Affaires, Netherlands (1866)
• J. Steven Rhodes (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Zimbabwe (1990)
• *Francis Joseph Ricciardone (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (2002–2005)
  • Ambassador Extraordinary and Plenipotentiary, Palau (2002–2005)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (2010–2014)
• Charles Allen Thorndike Rice (1851–1889)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1889)
• Condoleezza Rice (1954–)
  • Secretary of State (2005–2009)
• John Stanley Rice (1899–1985)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1961–1964)
• Susan Rice (1964–)
  • Assistant Secretary of State for African Affairs (1997–2001)
  • Representative of the U.S.A. to the United Nations (2009–2013)
• Walter Lyman Rice (1903–1998)
  • Ambassador Extraordinary and Plenipotentiary, Australia (1969–1973)
• Robert G. Rich Jr. (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Belize (1987–1990)
• Anne Claire Richard (1960–)
  • Assistant Secretary of State for Population, Refugees, and Migration Affairs (2012–2017)
• *Elizabeth H. Richard (?–)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (2016–2020)
• *Arthur Lincoln Richards (1907–1991)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (1960–1962)
• Elliot Lee Richardson (1920–1999)
  • Under Secretary of State (1969–1970)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1975–1976)
  • Ambassador at Large (1977–1980)
• John Richardson Jr. (1921–)
  • Assistant Secretary of State for Educational and Cultural Affairs (1969–1977)
• William Blaine (Bill) Richardson (1947–)
  • Representative of the U.S.A. to the United Nations (1997–1998)
• John C. Richmond (?–)
  • Ambassador at Large (2018)
• Lewis Richmond (1824–1894)
  • Minister Resident/Consul General, Portugal (1884–1885)
• John Wallace Riddle (1864–1941)
  • Agent/Consul General, Egypt (1903–1905)
  • Envoy Extraordinary and Minister Plenipotentiary, Serbia (1905–1907)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1905–1907)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1906–1909)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1921–1925)
• *James Williams Riddleberger (1904–1982)
  • Director of the Bureau of German Affairs (1952)
  • Ambassador Extraordinary and Plenipotentiary, Socialist Federal Republic of Yugoslavia (1953–1958)
  • Assistant Secretary of State for European and Eurasian Affairs (1956)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1957)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1958–1959)
  • Director of the International Cooperation Administration (1959–1961)
  • Career Ambassador (1960)
  • Ambassador Extraordinary and Plenipotentiary, Austria (1962–1967)
• *Rozanne Lejeanne Ridgway (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Finland (1977–1980)
  • Counselor (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, German Democratic Republic (1982–1985)
  • Assistant Secretary of State for European and Eurasian Affairs (1985–1989)
• *Charles P. Ries (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Greece (2004–2007)
• *Marcie B. Ries (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Albania (2004–2007)
  • Ambassador Extraordinary and Plenipotentiary, Bulgaria (2012–2015)
• *Elmore Rigamer (1940–)
  • Director of the Office of Medical Services (1994–1996)
• *Robert Annan Riley III (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Micronesia, Federated States of (2016–2020)
• *Robert J. Riley (?–)
  • Chargé d’Affaires, Belarus (2018)
• Thomas Riley (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (2003–2008)
• *Idar Rimestad (1916–2003)
  • Deputy Under Secretary of State for Management (1967–1969)
  • Representative of the U.S.A. to the European Office of the United Nations (Geneva) (1969–1973)
• *Robert Watland Rinden (1914–)
  • Chargé d’Affaires ad interim, Guinea ()
• Aaron Ellis Ringel (?–)
  • Assistant Secretary of State for Public Affairs (2020)
• Charles N. Riotte (1814–1887)
  • Minister Resident, Costa Rica (1861–1867)
  • Minister Resident, Nicaragua (1869–1873)
  • Minister Resident, Costa Rica (Not commissioned; nomination tabled by the Senate.)
• Carl C. Risch (1970–)
  • Assistant Secretary of State for Consular Affairs (2017)
• John Ewing Risley (1840–)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (1893–1897)
• John B. Ritch III (1943–)
  • Representative of the U.S.A. to the Vienna Office of the United Nations (Vienna) (1993–2001)
• Horacio Rivero Jr. (1910–2000)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1972–1974)
• George Lockhart Rives (1849–1917)
  • Assistant Secretary of State (1887–1889)
• *Lloyd Michael Rives (1921–2011)
  • Chargé d’Affaires ad interim, Congo (Brazzaville) (1965)
  • Chargé d’Affaires ad interim, Cambodia ()
• William Cabell Rives (1792–1868)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1829–1832)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1849–1853)
• Charles Hammerman Rivkin (1962–)
  • Ambassador Extraordinary and Plenipotentiary, France (2009–2013)
  • Envoy Extraordinary and Minister Plenipotentiary, Monaco (2009–2013)
  • Assistant Secretary of State for Economic, Energy, and Business Affairs (2014–2017)
• William Robert Rivkin (1919–1967)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (1962–1965)
  • Ambassador Extraordinary and Plenipotentiary, The Gambia (1966–1967)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (1966–1967)
• Hampton Robb (1895–1956)
  • Envoy Extraordinary and Minister Plenipotentiary, Paraguay (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• *Warren Delano Robbins (1885–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1928–1931)
  • Chief of Protocol (1931–1933)
  • Envoy Extraordinary and Minister Plenipotentiary, Canada (1933–1935)
• *George B. Roberts Jr. (1930–)
  • Chargé d’Affaires ad interim, Laos (1979)
  • Ambassador Extraordinary and Plenipotentiary, Guyana (1979–1981)
  • Chargé d’Affaires ad interim, Kyrgyzstan (1994)
• *Owen W. Roberts (1924–)
  • Chargé d’Affaires ad interim, Ethiopia (1982)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1984–1986)
• William Randall Roberts (1830–1897)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1885–1889)
• *Thomas Bolling Robertson (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Slovenia (2004–2007)
• Walter Spencer Robertson (1893–1970)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1953–1959)
• *David Snyder Robins (1940–)
  • Chargé d’Affaires ad interim, Bahrain (1994)
• Charles Wesley Robinson (1919–)
  • Under Secretary for Economic Growth, Energy, and the Environment (1974–1976)
  • Deputy Secretary of State (1976–1977)
• Christopher Robinson (1806–1889)
  • Envoy Extraordinary and Minister Plenipotentiary, Peru (1861–1865)
• *David M. Robinson (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Guyana (2006–2008)
• *David Malcolm Robinson (1955–)
  • Assistant Secretary of State for Conflict and Stabilization Operations (2016–2017)
• Davis Rowland Robinson (1940–)
  • Legal Adviser (1981–1985)
• *Kathryn Dee Robinson (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1998–2001)
• Paul Heron Robinson Jr. (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1981–1985)
• *Todd D. Robinson (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (2014–2017)
• *Terri Louise Robl (1957–)
  • Chargé d’Affaires ad interim, Djibouti (1998)
• Christina B. Rocca (1957–)
  • Assistant Secretary of State for South and Central Asian Affairs (2001–2006)
• *V. Manuel Rocha (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (2000–2002)
• William Beatty Rochester (1789–1838)
  • Chargé d’Affaires, Guatemala (1827)
• Leonard Rochwarger (1925–2001)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (1987–1989)
  • Ambassador Extraordinary and Plenipotentiary, Kiribati (1987–1989)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (1987–1989)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (1987–1989)
• Nelson Aldrich Rockefeller (1908–1979)
  • Assistant Secretary of State for Western Hemisphere Affairs (1944–1945)
• William Woodville Rockhill (1854–1914)
  • Third Assistant Secretary of State (1894–1896)
  • Assistant Secretary of State (1896–1897)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Greece (1897–1898)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Serbia (1897–1898)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Romania (1897–1898)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1898–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, Serbia (1898–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1898–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1905–1909)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1909–1911)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1911–1913)
• *Stuart Wesson Rockwell (1917–2011)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (1970–1973)
• Edward L. Roddan (1899–1989)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1951–1953)
• Joe M. Rodgers (1933–2008)
  • Ambassador Extraordinary and Plenipotentiary, France (1985–1989)
• *Carol Ann Rodley (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (2008–2011)
• Peter Warren Rodman (1943–)
  • Director of Policy Planning (1984–1986)
• Caesar Augustus Rodney (1772–1824)
  • Minister Plenipotentiary, Argentina (1823–1824)
• *Hugo F. Rodriguez (?–)
  • Chargé d’Affaires ad interim, Paraguay (2018)
• *William V. Roebuck (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Bahrain (2014–2017)
• Timothy J. Roemer (1956–)
  • Ambassador Extraordinary and Plenipotentiary, India (2009–2011)
• Hezekiah Gold Rogers (1811–1882)
  • Chargé d’Affaires, Italy (1840–1841)
• James Grafton Rogers (1883–1971)
  • Assistant Secretary of State (1931–1933)
• John F. W. Rogers (1956–)
  • Under Secretary of State for Management (1991–1993)
• *Stephen H. Rogers (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Swaziland (1990–1993)
• William Dill Rogers (1927–2007)
  • Assistant Secretary of State for Western Hemisphere Affairs (1974–1976)
  • Under Secretary for Economic Growth, Energy, and the Environment (1976)
• William Pierce Rogers (1913–2001)
  • Secretary of State (1969–1973)
• Sigmund A. Rogich (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1992–1993)
• Felix Rohatyn (1929–)
  • Ambassador Extraordinary and Plenipotentiary, France (1997–2000)
• Karl Fritjof Rolvaag (1913–1990)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1967–1969)
• Alina L. Romanowski (?–)
  • Ambassador Extraordinary and Plenipotentiary, Kuwait (2019)
• Edward L. Romero (1934–)
  • Ambassador Extraordinary and Plenipotentiary, Andorra (1998–2001)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1998–2001)
• *Peter F. Romero (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1993–1996)
  • Assistant Secretary of State for Western Hemisphere Affairs (2000–2001)
• *Fernando Enrique Rondon (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Madagascar (1980–1983)
  • Ambassador Extraordinary and Plenipotentiary, Comoros (1982–1983)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1985–1988)
• *Elizabeth Rood (?–)
  • Chargé d’Affaires ad interim, Georgia (2018)
• John C. Rood (1968–)
  • Assistant Secretary of State for International Security and Nonproliferation (2006–2007)
  • Under Secretary of State for Arms Control and International Security Affairs (Nominated Mar. 22, 2007, designated Acting Under Secretary Sept. 26, 2007. Nomination not acted upon by the Senate.)
• John D. Rood (1955–)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (2004–2007)
• Daniel M. Rooney (1932–2017)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (2009–2012)
• Francis Rooney (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Holy See (2005–2008)
• John Victor Roos (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Japan (2009–2013)
• Nicholas Roosevelt (1893–1982)
  • Envoy Extraordinary and Minister Plenipotentiary, Hungary (1930–1933)
• Robert Barnwell Roosevelt (1829–1906)
  • Minister Resident, Netherlands (1888)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1888–1889)
• Selwa Roosevelt (1929–)
  • Chief of Protocol (1982–1989)
• Elihu Root (1845–1937)
  • Secretary of State (1905–1909)
• *John Frick Root (1918–1988)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1969–1974)
• Joseph Pomeroy Root (1826–1885)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1870–1873)
  • Minister Resident, Netherlands (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• Daniel Calhoun Roper (1867–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Canada (1939)
• James Carew Rosapepe (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Romania (1997–2001)
• Frank A. Rose (1972–)
  • Assistant Secretary of State for Arms Control, Verification, and Compliance (2014–2017)
• William Starke Rosecrans (1819–1898)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1868–1869)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (Not commissioned; nomination tabled by the Senate.)
• *Dorothea-Maria Rosen (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Micronesia, Federated States of (2012–2016)
• Daniel N. Rosenblum (?–)
  • Ambassador Extraordinary and Plenipotentiary, Uzbekistan (2019)
• *Charles Rosenfarb (?–)
  • Director of the Office of Medical Services (2015)
• *James D. Rosenthal (1932–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (1983–1986)
• Ronald William Roskens (1932–)
  • Administrator of the Agency for International Development (1990–1992)
• *Christopher W.S. Ross (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Algeria (1988–1991)
  • Ambassador Extraordinary and Plenipotentiary, Syria (1991–1998)
  • Director of the Bureau of Counterterrorism (1998)
• *Claude George Anthony Ross (1917–2006)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1963–1967)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (1967–1969)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1969–1972)
• Dennis B. Ross (1948–)
  • Director of Policy Planning (1989–1992)
• *Lawrence George Rossin (1952–2012)
  • Ambassador Extraordinary and Plenipotentiary, Croatia (2000–2003)
• Eugene Victor Debs Rostow (1913–2002)
  • Under Secretary of State for Political Affairs (1966–1969)
  • Director of the U.S. Arms Control and Disarmament Agency (1981–1983)
• Walt Whitman Rostow (1916–2003)
  • Director of Policy Planning (1961–1966)
  • Counselor (1961–1966)
• *Richard Allen Roth (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea-Bissau (2002–2005)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (2002–2005)
• Stanley Owen Roth (1954–)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1997–2001)
• William Matson Roth (1916–2014)
  • U.S. Trade Representative (1967–1969)
• *William Manning Rountree (1917–1995)
  • Assistant Secretary of State for Near Eastern Affairs (1956–1959)
  • Ambassador Extraordinary and Plenipotentiary, Pakistan (1959–1962)
  • Ambassador Extraordinary and Plenipotentiary, Sudan (1962–1965)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (1965–1970)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1970–1973)
• Richard Hilaire Rousseau (1815–1872)
  • Minister Resident, Honduras (1866–1869)
• Carl Thomas Rowan (1925–2000)
  • Ambassador Extraordinary and Plenipotentiary, Finland (1963–1964)
  • Director of the U.S. Information Agency (1964–1965)
• John Rowan (1773–1853)
  • Chargé d’Affaires, Kingdom of the Two Sicilies (1848–1849)
• *Leslie Ventura Rowe (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Solomon Islands (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Papua New Guinea (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Vanuatu (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Mozambique (2009–2012)
• *Edward Morgan Rowell (1931–)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1985–1988)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1988–1990)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (1990–1994)
• *J. Stapleton Roy (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Singapore (1984–1986)
  • Executive Secretary (1989–1991)
  • Ambassador Extraordinary and Plenipotentiary, China (1991–1995)
  • Ambassador Extraordinary and Plenipotentiary, Indonesia (1995–1999)
  • Career Ambassador (1996)
  • Assistant Secretary of State for Intelligence and Research (1999–2001)
• Robert V. Royall (1934–)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (2001–2003)
• Marie Royce (?–)
  • Assistant Secretary of State for Educational and Cultural Affairs (2018)
• *Eric Seth Rubin (1961–)
  • Ambassador Extraordinary and Plenipotentiary, Bulgaria (2015–2019)
• James P. Rubin (1960–)
  • Assistant Secretary of State for Public Affairs (1997–2000)
• *Daniel H. Rubinstein (1967–)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (2015–2019)
• Horace Rublee (1829–1896)
  • Minister Resident, Switzerland (1869–1876)
  • Chargé d’Affaires, Switzerland (1876)
• *Roy Richard Rubottom Jr. (1912–2010)
  • Assistant Secretary of State for Western Hemisphere Affairs (1957–1960)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1960)
• Francis Stephen Ruddy (1937–)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1984–1988)
• *William Arthur Rugh (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (1992–1995)
• Donald Henry Rumsfeld (1932–)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1973–1974)
• Theodore Runyon (1822–1896)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1893)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1893–1896)
• Loret Miller Ruppe (1936–1996)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1989–1993)
• Kenneth Rush (1910–1994)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1969–1972)
  • Secretary of State ad interim (1973)
  • Deputy Secretary of State (1973–1974)
  • Ambassador Extraordinary and Plenipotentiary, France (1974–1977)
• Richard Rush (1780–1859)
  • Secretary of State ad interim (1817)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1825)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1847–1849)
• David Dean Rusk (1909–1994)
  • Deputy Under Secretary of State (1949–1950)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1949–1951)
  • Secretary of State (1961–1969)
• Jeremiah McLain Rusk (1830–1893)
  • Chargé d’Affaires, Paraguay (1881)
  • Chargé d’Affaires, Uruguay (1881)
• Daniel R. Russel (1953–)
  • Assistant Secretary of State for East Asian and Pacific Affairs (2013–2017)
• Alexander L. Russell (?–)
  • Minister Resident, Ecuador (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• Catherine M. Russell (1961–)
  • Ambassador at Large (2013–2017)
• Charles Wells Russell (1856–1927)
  • Envoy Extraordinary and Minister Plenipotentiary, Iran (1909–1914)
• Donald Stuart Russell (1906–1998)
  • Assistant Secretary of State for Administration (1945–1947)
• *Francis Henry Russell (1904–1989)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (1957–1960)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1960–1962)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (1962–1969)
• Fred Jesse Russell (1916–2007)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1971–1972)
• Jonathan Russell (1771–1832)
  • Chargé d’Affaires, France (1810–1811)
  • Chargé d’Affaires, United Kingdom (1811–1812)
  • Minister Plenipotentiary, Sweden (1814–1818)
• *Theodore E. Russell (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Slovakia (1993–1996)
• Thomas Russell Jr. (1825–1887)
  • Minister Resident, Venezuela (1874–1877)
• William Worthington Russell (1859–1944)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1904–1905)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (1905–1910)
  • Minister Resident/Consul General, Dominican Republic (1910–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1911–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1915–1925)
  • Envoy Extraordinary and Minister Plenipotentiary, Thailand (1925–1927)
• Paul A. Russo (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Dominica (1986–1988)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (1986–1988)
  • Ambassador Extraordinary and Plenipotentiary, Antigua and Barbuda (1986–1988)
  • Ambassador Extraordinary and Plenipotentiary, Saint Vincent and the Grenadines (1986–1988)
  • Ambassador Extraordinary and Plenipotentiary, Saint Lucia (1986–1988)
  • Ambassador Extraordinary and Plenipotentiary, Saint Kitts and Nevis (1986–1988)
• John Rutledge (1739–1800)
  • Minister Plenipotentiary, Netherlands (Elected on July 5, 1785, to be Minister Plenipotentiary to the United Netherlands; declined appointment.)
• *Peter Rutter (1915–1989)
  • Chargé d’Affaires, Ghana (1957)
• L. Nicholas Ruwe (1933–1990)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1985–1989)
• Evan Ryan (1971–)
  • Assistant Secretary of State for Educational and Cultural Affairs (2013–2017)
• *Hewson Anthony Ryan (1922–1991)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1969–1973)
• Mary A. Ryan (1940–2006)
  • Ambassador Extraordinary and Plenipotentiary, Swaziland (1988–1990)
  • Assistant Secretary of State for Consular Affairs (1993–2002)
  • Career Ambassador (1999)
• *Robert J. Ryan Jr. (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1984–1987)
• *Robert Joseph Ryan (1914–2003)
  • Ambassador Extraordinary and Plenipotentiary, Niger (1964–1968)
• Thomas Ryan (1837–1914)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1889–1893)
• *William Edwin Ryerson (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Albania (1991–1994)