Principal Officers and Chiefs of Mission, by Name: S

Note: Career Foreign Service appointees are asterisked.

• *Leonard John Saccio (1911–)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1970–1973)
• Leo R. Sack (1889–1956)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1933–1937)
• Frederic Mosley Sackett (1868–1941)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1930–1933)
• Nathan Alexander Sales (1974–)
  • Director of the Bureau of Counterterrorism (2017)
• Nicolas M. Salgo (1914–2005)
  • Ambassador Extraordinary and Plenipotentiary, Hungary (1983–1986)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (Nomination of June 16, 1992, not acted upon by the Senate.)
• *Charles B. Salmon Jr. (1938–)
  • Chargé d’Affaires, Laos (1992)
  • Ambassador Extraordinary and Plenipotentiary, Laos (1992–1993)
• *Joseph A. Saloom III (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (1993–1996)
• *Bryant J. Salter (1950–)
  • Chargé d’Affaires ad interim, Antigua and Barbuda (1994)
  • Chargé d’Affaires ad interim, Saint Kitts and Nevis (1994)
• Charles Eckridge Saltzman (1903–1994)
  • Assistant Secretary of State for Occupied Areas (1947–1949)
  • Under Secretary of State for Management (1954)
• Herbert Salzman (1916–1990)
  • Representative of the U.S.A. to the Organization for Economic Cooperation and Development (Paris) (1977–1981)
• *Dorothy Myers Sampas (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Mauritania (1994–1997)
• Archibald Johnson Sampson (1839–1921)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1897–1905)
• Michael Anthony Samuels (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Sierra Leone (1974–1977)
• Nathaniel Samuels (1908–1999)
  • Deputy Under Secretary of State for Economic Affairs (1969–1972)
• Phillip Victor Sanchez (1929–)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1973–1976)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1976–1977)
• David B. Sandalow (1957–)
  • Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs (1999–2001)
• *Robin Renee Sanders (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (2002–2005)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (2007–2010)
• *Janet Ann Sanderson (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Algeria (2000–2003)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (2006–2008)
• Carla H. Sands (?–)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (2017)
• William Franklin Sands (1874–1946)
  • Envoy Extraordinary and Minister Plenipotentiary, Guatemala (1909–1910)
• Henry Shelton Sanford (1823–1891)
  • Minister Resident, Belgium (1861–1869)
  • Envoy Extraordinary and Minister Plenipotentiary, Belgium (Nomination of December 17, 1866, rejected by the Senate.)
  • Envoy Extraordinary and Minister Plenipotentiary, Belgium (Nomination of March 8, 1867, rejected by the Senate.)
  • Minister Resident, Belgium (Not commissioned; nomination not confirmed by the Senate.)
  • Minister Resident, Spain (Not commissioned; nomination not confirmed by the Senate.)
• David Nathan Saperstein (1947–)
  • Ambassador at Large (2015–2017)
• Howland Hill Sargeant (1911–1984)
  • Assistant Secretary of State for Public Affairs (1952–1953)
• Aaron Augustus Sargent (1827–1887)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1882–1884)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (Not commissioned although nomination was confirmed by the Senate.)
• *Karen H. Sasahara (?–)
  • Chargé d’Affaires ad interim, Jordan (2019–2020)
• James R. Sasser (1936–)
  • Ambassador Extraordinary and Plenipotentiary, China (1995–1999)
• *David Michael Satterfield (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (1998–2001)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (2004)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (2019)
• *Joseph Charles Satterthwaite (1900–1990)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1949–1953)
  • Diplomatic Agent/Consul General, Morocco (1953–1955)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1955–1957)
  • Director General of the Foreign Service (1957–1958)
  • Assistant Secretary of State for African Affairs (1958–1961)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (1961–1965)
• Ellen Richmond Sauerbrey (1937–)
  • Assistant Secretary of State for Population, Refugees, and Migration Affairs (2006–2007)
• *Harold Henry Saunders (1930–2016)
  • Assistant Secretary of State for Intelligence and Research (1975–1978)
  • Assistant Secretary of State for Near Eastern Affairs (1978–1981)
• Romulus Mitchell Saunders (1791–1867)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1846–1849)
• Charles Sawyer (1887–1979)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1944–1945)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1944–1945)
• William Bart Saxbe (1916–2010)
  • Ambassador Extraordinary and Plenipotentiary, India (1975–1976)
• Francis Bowes Sayre (1885–1972)
  • Assistant Secretary of State (1933–1939)
• *Robert Marion Sayre (1924–2016)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1968–1969)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1969–1974)
  • Inspector General of the Department of State and the Foreign Service (1975–1978)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1978–1981)
  • Director of the Bureau of Counterterrorism (1982–1984)
• John Alfred Scali (1918–1995)
  • Representative of the U.S.A. to the United Nations (1973–1975)
• *John Douglas Scanlan (1927–2007)
  • Ambassador Extraordinary and Plenipotentiary, Socialist Federal Republic of Yugoslavia (1985–1989)
• *Michael D. Scanlan (1961–)
  • Chargé d’Affaires, Belarus (2013)
• *Eugene L. Scassa (1939–2012)
  • Ambassador Extraordinary and Plenipotentiary, Belize (1990–1994)
• John Robert Schaetzel (1917–2003)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (1966–1972)
• *M. Virginia Schafer (1931–)
  • Ambassador Extraordinary and Plenipotentiary, Solomon Islands (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Papua New Guinea (1981–1984)
• *Howard Bruner Schaffer (1929–2017)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (1984–1987)
• *Teresita Currie Schaffer (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1992–1995)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1992–1995)
  • Director of the Foreign Service Institute (1995–1997)
• Andrew H. Schapiro (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Czech Republic (2014–2017)
• *Mark A. Schapiro (?–)
  • Chargé d’Affaires ad interim, Malta (2018–2020)
• *William Everett Schaufele Jr. (1923–2008)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1969–1971)
  • Inspector General of the Department of State and the Foreign Service (1975)
  • Assistant Secretary of State for African Affairs (1975–1977)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1977)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1978–1980)
• Arthur Louis Schechter (1939–)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (1998–2001)
• David J. Scheffer (1953–)
  • Ambassador at Large (1997–2001)
• Robert Cumming Schenck (1809–1890)
  • Envoy Extraordinary and Minister Plenipotentiary, Brazil (1851–1853)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1870–1876)
• David Schenker (?–)
  • Assistant Secretary of State for Near Eastern Affairs (2019)
• *Lange Schermerhorn (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (1997–2000)
• John Thomas Schieffer (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Australia (2001–2005)
  • Ambassador Extraordinary and Plenipotentiary, Japan (2005–2009)
• Richard Schifter (1923–)
  • Assistant Secretary of State for Democracy, Human Rights, and Labor (1985–1992)
• *Ronald Lewis Schlicher (1958–)
  • Chargé d’Affaires ad interim, Lebanon (1996)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (Nomination not acted upon by the Senate.)
• Albert George Schmedemann (1864–1946)
  • Envoy Extraordinary and Minister Plenipotentiary, Norway (1913–1921)
• Adolph William Schmidt (1904–2000)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1969–1974)
• *Richard J. Schmierer (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Oman (2009–2012)
• Rockwell Anthony Schnabel (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Finland (1985–1989)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (2001–2005)
• Cynthia Perrin Schneider (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1998–2001)
• *David Taylor Schneider (1922–2014)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (1978–1981)
• George Schneider (1823–1905)
  • Chargé d’Affaires, Switzerland (1877)
• William Schneider Jr. (1941–)
  • Under Secretary of State for Arms Control and International Security Affairs (1982–1986)
• *Hans Frederick Arthur Schoenfeld (1889–1952)
  • Envoy Extraordinary and Minister Plenipotentiary, Bulgaria (1928)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1929)
  • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1931–1937)
  • Envoy Extraordinary and Minister Plenipotentiary, Finland (1937–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Hungary (1945–1947)
• *Rudolf Emil Schoenfeld (1895–1981)
  • Chargé d’Affaires ad interim, Belgium (1944)
  • Chargé d’Affaires, Luxembourg (1944)
  • Chargé d’Affaires ad interim, Poland (1945)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1947–1950)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1951–1953)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1953–1955)
  • Chargé d’Affaires ad interim, Belgium (Served as Chargé d’Affaires ad interim near the Government of Belgium established in England.)
  • Chargé d’Affaires ad interim, Norway ()
  • Chargé d’Affaires ad interim, Belgium (Schoenfeld established the Legation near the Government of the Netherlands in the United Kingdom.)
• *Brenda Schoonover (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1997–2000)
• *Stanley N. Schrager (1941–)
  • Chargé d’Affaires ad interim, Mauritania (1982)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (Nomination of May 6, 1996, was withdrawn.)
• Francis Schroeder (1814–1886)
  • Chargé d’Affaires, Sweden (1849–1854)
  • Minister Resident, Sweden (1854–1857)
• Gregory L. Schulte (1958–)
  • Representative of the U.S.A. to the Vienna Office of the United Nations (Vienna) (2005–2009)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (2005–2009)
• *Eric T. Schultz (1959–)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (2014–2017)
• Jacob Gould Schurman (1854–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1912–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Montenegro (1912–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1921–1925)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1925–1930)
• Carl Schurz (1829–1906)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1861)
• Eugene Schuyler (1840–1890)
  • Diplomatic Agent/Consul General, Romania (1880–1881)
  • Chargé d’Affaires and Consul General, Romania (1880–1882)
  • Minister Resident/Consul General, Greece (1882–1884)
  • Minister Resident/Consul General, Serbia (1882–1884)
  • Minister Resident/Consul General, Romania (1882–1884)
  • Agent/Consul General, Egypt (1889–1890)
  • Assistant Secretary of State (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• Montgomery Schuyler Jr. (1877–1955)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1913)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1921–1925)
• Abba Philip Schwartz (1916–1989)
  • Assistant Secretary of State for Consular Affairs (1962–1966)
• Eric P. Schwartz (1957–)
  • Assistant Secretary of State for Population, Refugees, and Migration Affairs (2009–2011)
• *Stephen Michael Schwartz (1958–)
  • Chargé d’Affaires ad interim, Comoros (2006)
  • Chargé d’Affaires ad interim, Seychelles (2006)
  • Chargé d’Affaires ad interim, Mauritius (2006)
  • Ambassador Extraordinary and Plenipotentiary, Somalia (2016–2017)
• William B. Schwartz Jr. (1921–2010)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (1977–1981)
• *Margaret Scobey (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Syria (2003–2005)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (2008–2011)
• *Thomas James Scotes (1932–)
  • Chargé d’Affaires ad interim, Syria (1974)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (1974–1978)
• Charles Lewis Scott (1827–1899)
  • Minister Resident/Consul General, Venezuela (1885–1888)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (1888–1889)
• *Gerald Wesley Scott (1940–)
  • Ambassador Extraordinary and Plenipotentiary, The Gambia (1995–1998)
• *Kyle R. Scott (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Serbia (2015–2019)
• *Robert K. Scott (?–)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (2019)
• Stuart Nash Scott (1906–1991)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1973–1975)
• *Walter Kenneth Scott (1915–1977)
  • Assistant Secretary of State for Administration (1958–1959)
• *Robert McGregor Scotten (1891–1968)
  • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1940–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1943–1947)
  • Envoy Extraordinary and Minister Plenipotentiary, New Zealand (1947–1948)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (1948–1955)
• William Warren Scranton (1917–2013)
  • Representative of the U.S.A. to the United Nations (1976–1977)
• William Lindsay Scruggs (1836–1912)
  • Minister Resident, Colombia (1873–1876)
  • Minister Resident, Colombia (1882–1884)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1884–1885)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (1889–1892)
• William A. Seay (1831–1888)
  • Minister Resident/Consul General, Bolivia (1885–1887)
• *William Joseph Sebald (1901–1980)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1952–1954)
  • Ambassador Extraordinary and Plenipotentiary, Australia (1957–1961)
• *Peter Sebastian (1926–2011)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (1984–1987)
• Peter F. Secchia (1937–)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1989–1993)
• *Stephen A. Seche (1948–)
  • Chargé d’Affaires ad interim, Syria (2006)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (2007–2010)
• Theodore Sedgwick (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Slovakia (2010–2015)
• *Talcott Williams Seelye (1922–2006)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (1972–1976)
  • Ambassador Extraordinary and Plenipotentiary, Syria (1978–1981)
• *Joseph Monroe Segars (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Cape Verde (1992–1996)
• John Jacob Seibels (1816–1865)
  • Chargé d’Affaires, Belgium (1853–1854)
  • Minister Resident, Belgium (1854–1856)
  • Envoy Extraordinary and Minister Plenipotentiary, Belgium (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• George Marion Seignious II (1921–2005)
  • Director of the U.S. Arms Control and Disarmament Agency (1978–1980)
• Robert A. Seiple (1942–)
  • Ambassador at Large (1999–2000)
• *Raymond George Hardenbergh Seitz (1940–)
  • Assistant Secretary of State for European and Eurasian Affairs (1989–1991)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1991–1994)
• Armistead Inge Selden Jr. (1921–1985)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (1974–1978)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (1974–1979)
  • Ambassador Extraordinary and Plenipotentiary, Samoa (1974–1979)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (1974–1979)
• Peter A. Selfridge (1971–)
  • Chief of Protocol (2014–2016)
• Ivan Selin (1937–)
  • Under Secretary of State for Management (1989–1991)
• Melvin Floyd Sembler (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Australia (1989–1993)
  • Ambassador Extraordinary and Plenipotentiary, Nauru (1989–1993)
  • Ambassador Extraordinary and Plenipotentiary, Italy (2001–2005)
• James Semple (1798–1866)
  • Chargé d’Affaires, Colombia (1837–1842)
• *Michael James Senko (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Kiribati (2000–2003)
  • Ambassador Extraordinary and Plenipotentiary, Marshall Islands (2000–2003)
• *Robert Edward Service (1937–)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1994–1997)
• Edson Oliver Sessions (1902–1987)
  • Ambassador Extraordinary and Plenipotentiary, Finland (1959–1960)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1968–1970)
• Stephen R. Sestanovich (1950–)
  • Ambassador at Large (1997–2001)
• Thomas Settle (1831–1888)
  • Envoy Extraordinary and Minister Plenipotentiary, Peru (1871)
• Henry Hulme Sevier (1878–1940)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1933–1935)
• Harold Marsh Sewall (1860–1924)
  • Envoy Extraordinary and Minister Plenipotentiary, Hawaii (1897–1898)
• Sarah Sewall (1961–)
  • Under Secretary of State for Civilian Security, Democracy, and Human Rights (2014–2017)
• Frederick William Seward (1830–1915)
  • Assistant Secretary of State (1861–1869)
  • Assistant Secretary of State (1877–1879)
• George Frederick Seward (1840–1910)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1876–1880)
• William Henry Seward (1801–1872)
  • Secretary of State (1861–1869)
• Thomas Hart Seymour (1807–1868)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1853–1858)
• John Seys (1799–1872)
  • Minister Resident/Consul General, Liberia (1866–1870)
• John Shad (1923–1994)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1987–1989)
• Frank J. Shakespeare Jr. (1925–)
  • Director of the U.S. Information Agency (1969–1973)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1985–1986)
  • Ambassador Extraordinary and Plenipotentiary, Holy See (1986–1989)
• *Nicole D. Shampaine (?–)
  • Chargé d’Affaires ad interim (2017–2018)
  • Chargé d’Affaires ad interim (2017–2018)
• James Shannon (1791–1832)
  • Chargé d’Affaires, Guatemala (1832)
• Richard Cutts Shannon (1839–1920)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1891–1893)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1891–1893)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1891–1893)
• *Thomas Alfred Shannon Jr. (1958–)
  • Assistant Secretary of State for Western Hemisphere Affairs (2005–2009)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (2009–2013)
  • Career Ambassador (2012)
  • Counselor (2013–2016)
  • Under Secretary of State for Political Affairs (2016–2018)
  • Secretary of State ad interim (2017)
• William Vincent Shannon (1927–1988)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1977–1981)
• Wilson Shannon (1802–1877)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1844–1845)
• *Harold Shantz (1894–1967)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1952–1955)
• Andrew J. Shapiro (1967–)
  • Assistant Secretary of State for Politico-Military Affairs (2009–2013)
• *Charles S. Shapiro (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (2002–2004)
• Daniel B. Shapiro (1969–)
  • Ambassador Extraordinary and Plenipotentiary, Israel (2011–2017)
• William Graves Sharp (1859–1922)
  • Ambassador Extraordinary and Plenipotentiary, France (1914–1919)
• *Mattie R. Sharpless (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (2001–2002)
• John Howard Francis Shattuck (1943–)
  • Assistant Secretary of State for Democracy, Human Rights, and Labor (1993–1998)
  • Ambassador Extraordinary and Plenipotentiary, Czech Republic (1998–2000)
• *Gardiner Howland Shaw (1893–1965)
  • Assistant Secretary of State (1941–1944)
• *George Price Shaw (1892–1966)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1948–1949)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (1949–1952)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1952–1953)
• John Arthur Shaw (1939–)
  • Inspector General of Foreign Assistance (1976–1977)
• *Dorothy Shea (?–)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (2020)
• Joseph Hooker Shea (1863–1928)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1916–1921)
• Owen James Sheaks (1943–)
  • Assistant Secretary of State for Arms Control, Verification, and Compliance (2000–2002)
• *David Bruce Shear (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Vietnam (2011–2014)
• Derek Shearer (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Finland (1994–1997)
• Michael E. Sheehan (1955–)
  • Director of the Bureau of Counterterrorism (1999–2000)
  • Ambassador at Large (1999–2000)
• James Rockwell Sheffield (1864–1938)
  • Ambassador Extraordinary and Plenipotentiary, Mexico (1924–1927)
• *Gilbert H. Sheinbaum (1929–)
  • Chargé d’Affaires ad interim, Madagascar (1977)
• Samuel Shellabarger (1817–1896)
  • Minister Resident, Portugal (1869–1870)
• Sally Angela Shelton (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Dominica (1979–1981)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (1979–1981)
  • Ambassador Extraordinary and Plenipotentiary, Grenada (1979–1981)
  • Envoy Extraordinary and Minister Plenipotentiary, Saint Lucia (1979–1981)
• *Turner Blair Shelton (1915–1982)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1970–1975)
• *Albert William Sherer Jr. (1916–1986)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1967–1970)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1968–1969)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (1970–1971)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1972–1975)
• Leo John Sheridan (1897–1975)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1968–1969)
• John Sherman (1823–1900)
  • Secretary of State (1897–1898)
• Robert A. Sherman (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (2014–2017)
• Wendy R. Sherman (1949–)
  • Assistant Secretary of State for Legislative Affairs (1993–1996)
  • Counselor (1997–2001)
  • Under Secretary of State for Political Affairs (2011–2015)
• Charles Hitchcock Sherrill (1867–1936)
  • Envoy Extraordinary and Minister Plenipotentiary, Argentina (1909–1910)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1932–1933)
• Benjamin Glover Shields (1808–1850)
  • Chargé d’Affaires, Venezuela (1845–1850)
• *Daniel L. Shields 3rd (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Brunei (2011–2014)
• Josette Sheeran Shiner (1954–)
  • Under Secretary for Economic Growth, Energy, and the Environment (2005–2007)
• *David H. Shinn (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1987–1990)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (1996–1999)
• *Amelia Ellen Shippy (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (1997–2000)
• *John William Shirley (1931–)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1984–1986)
• *Katherine Shirley (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (1991–1992)
• *Harry Walter Shlaudeman (1926–)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1975–1976)
  • Assistant Secretary of State for Western Hemisphere Affairs (1976–1977)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1977–1980)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1980–1983)
  • Ambassador at Large (1984–1986)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1986–1989)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1990–1992)
• Henry Wharton Shoemaker (1882–1958)
  • Envoy Extraordinary and Minister Plenipotentiary, Bulgaria (1930–1933)
• *Thomas P. Shoesmith (1922–)
  • Ambassador Extraordinary and Plenipotentiary, Malaysia (1983–1987)
• William Short (1759–1849)
  • Minister Plenipotentiary, France (1790–1792)
  • Minister Resident, Netherlands (1792)
  • Minister Resident, Spain (1794–1795)
  • Minister Plenipotentiary, Russia (1808)
• Robert Sargent Shriver Jr. (1915–2011)
  • Ambassador Extraordinary and Plenipotentiary, France (1968–1970)
• *Adam M. Shub (?–)
  • Chargé d’Affaires ad interim (2017–2018)
• *Brian Shukan (?–)
  • Chargé d’Affaires, Sudan (2019)
• George Pratt Shultz (1920–2021)
  • Secretary of State (1982–1989)
• Edward E. Shumaker III (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Trinidad and Tobago (1997–2001)
• *Leonard Grant Shurtleff (1940–2015)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (1987–1990)
• *Justin H. Siberell (1966–)
  • Ambassador Extraordinary and Plenipotentiary, Bahrain (2017–2020)
  • Director of the Bureau of Counterterrorism (Nomination of September 19, 2016, not acted upon by the Senate.)
• Daniel Edgar Sickles (1825–1914)
  • Minister Resident, Netherlands (1866)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1869–1874)
• M. Osman Siddique (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (1999–2001)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (1999–2001)
  • Ambassador Extraordinary and Plenipotentiary, Nauru (1999–2001)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (1999–2001)
• Thomas L. Siebert (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1994–1997)
• Ned L. Siegel (1951–)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (2007–2009)
• Nelson F. Sievering Jr. (1924–1997)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (1993–1997)
• *Marc Jonathan Sievers (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Oman (2015–2019)
• *Anne Marie Sigmund (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Kyrgyzstan (1997–2000)
• Gaston Joseph Sigur Jr. (1924–1995)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1986–1989)
• Laurence Hirsch Silberman (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Socialist Federal Republic of Yugoslavia (1975–1976)
• *Ints M. Silins (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Latvia (1992–1995)
  • Chargé d’Affaires ad interim, Latvia ()
• John Mahelm Berry Sill (1831–1901)
  • Minister Resident/Consul General, Korea (1894–1897)
• *Douglas Alan Silliman (1960–)
  • Ambassador Extraordinary and Plenipotentiary, Kuwait (2014–2016)
  • Ambassador Extraordinary and Plenipotentiary, Iraq (2016–2019)
• Kristen Silverberg (1970–)
  • Assistant Secretary of State for International Organization Affairs (2005–2008)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (2008–2009)
• Joy A. Silverman (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Dominica (Nomination of July 11, 1989, not acted upon by the Senate.)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (Nomination of July 11, 1989, not acted upon by the Senate.)
  • Ambassador Extraordinary and Plenipotentiary, Saint Vincent and the Grenadines (Nomination of July 11, 1989, not acted upon by the Senate.)
  • Ambassador Extraordinary and Plenipotentiary, Saint Lucia (Nomination of July 11, 1989, not acted upon by the Senate.)
• *Lawrence R. Silverman (?–)
  • Ambassador Extraordinary and Plenipotentiary, Kuwait (2016–2019)
• Martin J. Silverstein (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (2001–2005)
• *David E. Simcox (1932–)
  • Ambassador Extraordinary and Plenipotentiary, Mozambique (Not commissioned; nomination not acted upon by the Senate.)
• *John Farr Simmons (1892–1968)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (1944–1947)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1947–1950)
  • Chief of Protocol (1950–1957)
• *Hugh V. Simon Jr. (1944–)
  • Chargé d’Affaires ad interim, Guyana (1997)
• John A. Simon (1968–)
  • Representative of the U.S.A. to the African Union (2008–2009)
• *Paul E. Simons (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Chile (2007–2010)
• *Thomas W. Simons Jr. (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1990–1993)
  • Ambassador Extraordinary and Plenipotentiary, Pakistan (1995–1998)
• Joseph Simonson (1904–1985)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (1953–1957)
• *Daniel Howard Simpson (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1989–1992)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Kinshasa) (1995–1998)
• Manisha Singh (1971–)
  • Assistant Secretary of State for Economic, Energy, and Business Affairs (2017)
• *Melvin E. Sinn (1924–2006)
  • Chargé d’Affaires ad interim, Guatemala (1981)
• *Ernest Victor Siracusa (1918–2000)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1969–1973)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1973–1977)
• *Joseph John Sisco (1919–2004)
  • Assistant Secretary of State for International Organization Affairs (1965–1969)
  • Assistant Secretary of State for Near Eastern Affairs (1969–1974)
  • Under Secretary of State for Political Affairs (1974–1976)
• *Michele Jeanne Sison (1959–)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (2004–2008)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (2008–2010)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (2012–2014)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (2012–2014)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (2018)
  • Career Ambassador (2018)
• *Robert Woltz Skiff (1923–1999)
  • Chargé d’Affaires ad interim, Fiji ()
• Elliott Percival Skinner (1924–2007)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1966–1969)
• Kiron Skinner (?–)
  • Director of Policy Planning (2018–2019)
• *Robert Peet Skinner (1866–1960)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1926–1932)
  • Envoy Extraordinary and Minister Plenipotentiary, Estonia (1931–1933)
  • Envoy Extraordinary and Minister Plenipotentiary, Latvia (1931–1933)
  • Envoy Extraordinary and Minister Plenipotentiary, Lithuania (1931–1933)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1933–1936)
• *Emil M. Skodon (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Brunei (2005–2008)
• *Michael Martin Skol (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1990–1993)
• *Kenneth N. Skoug Jr. (1931–)
  • Chargé d’Affaires ad interim, Venezuela (1990)
• Anne-Marie Slaughter (1958–)
  • Director of Policy Planning (2009–2011)
• John Slidell (1793–1871)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1845)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Guatemala (1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1853)
• *Alexander Kilgore Sloan (1882–1944)
  • Chargé d’Affaires, Iraq (1931–1932)
• *Pamela Jo Howell Slutz (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Mongolia (2003–2006)
  • Ambassador Extraordinary and Plenipotentiary, Burundi (2009–2012)
• Robert M. Smalley (1925–2012)
  • Ambassador Extraordinary and Plenipotentiary, Lesotho (1987–1989)
• Charles Emory Smith (1842–1908)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1890–1892)
• *Dana Shell Smith (1970–)
  • Ambassador Extraordinary and Plenipotentiary, Qatar (2014–2017)
• *Dane Farnsworth Smith Jr. (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (1990–1993)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (1996–1999)
• *Daniel Bennett Smith (1956–)
  • Executive Secretary (2007–2009)
  • Ambassador Extraordinary and Plenipotentiary, Greece (2010–2013)
  • Assistant Secretary of State for Intelligence and Research (2014–2018)
  • Director of the Foreign Service Institute (2018)
  • Career Ambassador (2018)
  • Secretary of State ad interim (2021)
• David Shiverick Smith (1918–2012)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1976–1977)
• Earl Edward Tailer Smith (1903–1991)
  • Ambassador Extraordinary and Plenipotentiary, Cuba (1957–1959)
• Ezekiel Ezra Smith (1852–1933)
  • Minister Resident/Consul General, Liberia (1888–1890)
• *Gentry O. Smith (1959–)
  • Director of the Office of Foreign Missions (2015–2017)
• Gerard Coad Smith (1914–1994)
  • Director of Policy Planning (1957–1961)
  • Director of the U.S. Arms Control and Disarmament Agency (1969–1973)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (1977–1980)
  • Ambassador at Large (1977–1980)
• *Horace Harrison Smith (1905–1976)
  • Ambassador Extraordinary and Plenipotentiary, Laos (1958–1960)
• James B. Smith (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Saudi Arabia (2009–2013)
• James Hopkins Smith Jr. (1909–1982)
  • Director of the International Cooperation Administration (1957–1959)
• Jean Kennedy Smith (1928–)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1993–1998)
• John Cotton Smith II (1810–1879)
  • Minister Resident, Bolivia (1858–1861)
• *Keith C. Smith (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Lithuania (1997–2000)
• Madison Roswell Smith (1850–1919)
  • Envoy Extraordinary and Minister Plenipotentiary, Haiti (1913–1914)
• Nicholas Smith (?–)
  • Minister Resident, Greece (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• *Norman Shaw Smith (1936–)
  • Chargé d’Affaires ad interim, Uruguay (1981)
• Owen Lun West Smith (1851–1926)
  • Minister Resident/Consul General, Liberia (1898–1902)
• *Pamela Hyde Smith (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Moldova (2001–2003)
• Paul Albert Smith (1901–1978)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1948–1953)
• *R. Grant Smith (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Tajikistan (1995–1998)
• Robert Smith (1757–1842)
  • Secretary of State (1809–1811)
• *Robert Powell Smith (1929–2012)
  • Ambassador Extraordinary and Plenipotentiary, Malta (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1976–1979)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1979–1981)
• Robert Solwin Smith (1924–2013)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1974–1976)
• *Thomas William Macauley Smith (1930–1987)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1979–1983)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (1984–1986)
• Walter Bedell Smith (1895–1961)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1946–1948)
  • Under Secretary of State (1953–1954)
• *Wayne S. Smith (1932–)
  • Principal Officer, Cuba (1982)
• William Loughton Smith (1758–1812)
  • Minister Plenipotentiary, Portugal (1797–1801)
• Marion Hartzog Smoak (1916–)
  • Chief of Protocol (1974)
• Henry DeWolf Smyth (1898–1986)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (1961–1970)
• John Henry Smyth (1844–1908)
  • Minister Resident/Consul General, Liberia (1878–1881)
  • Minister Resident/Consul General, Liberia (1882–1885)
• *Reece Smyth (?–)
  • Chargé d’Affaires ad interim, Ireland (2019)
• Henry A. Smythe (?–)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (Not commissioned; nomination rejected by the Senate.)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (Not commissioned; nomination tabled by the Senate.)
• Henry Maxwell Smythe (1844–1932)
  • Chargé d’Affaires, Dominican Republic (1893–1897)
  • Minister Resident/Consul General, Haiti (1893–1897)
• Hugh Heyne Smythe (1913–1977)
  • Ambassador Extraordinary and Plenipotentiary, Syria (1965–1967)
  • Ambassador Extraordinary and Plenipotentiary, Malta (1967–1969)
• Mabel Murphy Smythe (1918–2006)
  • Ambassador Extraordinary and Plenipotentiary, Cameroon (1977–1980)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1979–1980)
• *Richard Lee Sneider (1922–1986)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1974–1978)
• *William Pennell Snow (1907–1986)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1959–1961)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1961–1967)
• Archibald Loudon Snowden (1837–1912)
  • Minister Resident/Consul General, Greece (1889–1891)
  • Minister Resident/Consul General, Serbia (1889–1892)
  • Minister Resident/Consul General, Romania (1889–1892)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1891–1892)
  • Envoy Extraordinary and Minister Plenipotentiary, Serbia (1891)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1891–1892)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1892–1893)
• Clifford M. Sobel (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (2001–2005)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (2006–2009)
• *Sidney Sober (1919–2014)
  • Chargé d’Affaires ad interim, Pakistan (1973)
• Abraham D. Sofaer (1938–)
  • Legal Adviser (1985–1990)
• *Earl David Sohm (1918–1995)
  • Director of the Office of Management Policy (1975–1976)
• Mauricio Solaun (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1977–1979)
• Howard E. Sollenberger (1917–1999)
  • Director of the Foreign Service Institute (1971–1976)
• Anthony Morton Solomon (1919–2008)
  • Assistant Secretary of State for Economic, Energy, and Business Affairs (1965–1969)
• Richard H. Solomon (1937–2017)
  • Director of Policy Planning (1986–1989)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1989–1992)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1992–1993)
• Alan D. Solomont (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Andorra (2009–2013)
  • Ambassador Extraordinary and Plenipotentiary, Spain (2009–2013)
• William Clark Somerville (1790–1826)
  • Chargé d’Affaires, Sweden (1825)
• Peter R. Sommer (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Malta (1987–1989)
• Gordon D. Sondland (?–)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (2018)
• Tara D. Sonenshine (1959–)
  • Under Secretary of State for Public Diplomacy and Public Affairs (2012–2013)
• *Helmut Sonnenfeldt (1926–2012)
  • Counselor (1973–1977)
• William Brooks Sorsby (1858–1912)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (1902–1908)
  • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1908)
• Michael Sotirhos (1928–2019)
  • Ambassador Extraordinary and Plenipotentiary, Jamaica (1985–1989)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1989–1993)
• Pierre Soule (1801–1870)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1853–1855)
• John Glover South (1873–1940)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1921–1930)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1929–1933)
• *Addison E. Southard (1884–1970)
  • Minister Resident/Consul General, Ethiopia (1927–1934)
• *E. Michael Southwick (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1994–1997)
• *James William Spain (1926–2008)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1975–1979)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1985–1989)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1985–1989)
• *Edward John Sparks (1897–1976)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1951–1954)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1955–1958)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1958–1961)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1961–1962)
• *Moncrieff Johnston Spear (1921–)
  • Chargé d’Affaires ad interim, The Bahamas (1973)
• Leonard H.O. Spearman (1929–2008)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (1988–1990)
  • Ambassador Extraordinary and Plenipotentiary, Lesotho (1990–1993)
• Daniel V. Speckhard (1959–)
  • Ambassador Extraordinary and Plenipotentiary, Belarus (1997–2000)
  • Ambassador Extraordinary and Plenipotentiary, Greece (2007–2010)
• Carroll Spence (1818–1896)
  • Minister Resident, Turkey (1853–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Turkey (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Joan Edelman Spero (1944–)
  • Under Secretary for Economic Growth, Energy, and the Environment (1993–1997)
• Watson Robertson Sperry (1842–1926)
  • Minister Resident/Consul General, Iran (1892–1893)
• Daniel L. Spiegel (1945–)
  • Representative of the U.S.A. to the European Office of the United Nations (Geneva) (1993–1995)
• Carl Spielvogel (1928–)
  • Ambassador Extraordinary and Plenipotentiary, Slovakia (2000–2001)
• *Ronald Ian Spiers (1925–)
  • Assistant Secretary of State for Politico-Military Affairs (1969–1973)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (1973–1974)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1977–1980)
  • Assistant Secretary of State for Intelligence and Research (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Pakistan (1981–1983)
  • Under Secretary of State for Management (1983–1989)
  • Career Ambassador (1984)
• Herbert John Spiro (1924–2010)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1975–1976)
  • Ambassador Extraordinary and Plenipotentiary, Cameroon (1975–1977)
• *Herbert Daniel Spivack (1917–2004)
  • Chargé d’Affaires ad interim, Bangladesh (1972)
• Ronald Spogli (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Italy (2005–2009)
  • Ambassador Extraordinary and Plenipotentiary, San Marino (2006–2009)
• *Pamela Leora Spratlen (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Kyrgyzstan (2011–2014)
  • Ambassador Extraordinary and Plenipotentiary, Uzbekistan (2014–2018)
• Carroll Sprigg (1880–1944)
  • Agent/Consul General, Egypt (1920–1921)
• George Stoney Springsteen Jr. (1923–1993)
  • Executive Secretary (1974–1976)
  • Director of the Foreign Service Institute (1976–1980)
• John T. Sprott (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Swaziland (1993–1996)
• *Philip Dodson Sprouse (1906–1977)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (1962–1964)
• Raymond Ames Spruance (1886–1969)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1952–1955)
• Ephraim George Squier (1821–1888)
  • Chargé d’Affaires, Guatemala (1849)
• Herbert Goldsmith Squiers (1859–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Cuba (1902–1905)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1906–1909)
• *Wells Stabler (1919–2009)
  • Chargé d’Affaires ad interim, Jordan (1950)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1975–1978)
• *Walter Edward Stadtler (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Benin (1986–1989)
• *Joseph D. Stafford (1950–)
  • Ambassador Extraordinary and Plenipotentiary, The Gambia (2004–2007)
  • Chargé d’Affaires, Sudan (2014)
• John Bernhard Stallo (1823–1900)
  • Envoy Extraordinary and Minister Plenipotentiary, Italy (1885–1889)
• William Harrison Standley (1872–1963)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1942–1943)
• *Sylvia Gaye Stanfield (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Brunei (1999–2002)
• *Edwin Forward Stanton (1901–1968)
  • Envoy Extraordinary and Minister Plenipotentiary, Thailand (1946–1947)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (1947–1953)
• *Karen Clark Stanton (1955–)
  • Ambassador Extraordinary and Plenipotentiary, Timor-Leste (2014–2017)
• *William A. Stanton (1947–)
  • Chargé d’Affaires ad interim, Australia (2006)
• *George McDade Staples (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (1998–2001)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Cameroon (2001–2004)
  • Director General of the Foreign Service (2006–2007)
• Craig Roberts Stapleton (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Czech Republic (2001–2003)
  • Ambassador Extraordinary and Plenipotentiary, France (2005–2009)
  • Envoy Extraordinary and Minister Plenipotentiary, Monaco (2006–2009)
• David Austin Starkweather (1802–1876)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1854–1857)
• *Gregory B. Starr (1953–)
  • Assistant Secretary of State for Diplomatic Security (2013–2017)
• Harold E. Stassen (1907–2001)
  • Director of the Foreign Operations Administration (1953–1955)
  • Director of the Mutual Security Agency (1953)
• *Monteagle Stearns (1924–2016)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1976–1979)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1981–1985)
• *Henry Endicott Stebbins (1905–1973)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (1959–1966)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1966–1969)
• *William Perry Stedman Jr. (1923–2018)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1973–1977)
• Isaac Nevitt Steele (1809–1891)
  • Chargé d’Affaires, Venezuela (1849–1853)
• *Howard Steers (?–)
  • Chargé d’Affaires ad interim, Moldova ()
• *John Milton Steeves (1905–1998)
  • Ambassador Extraordinary and Plenipotentiary, Afghanistan (1962–1966)
  • Director General of the Foreign Service (1966–1969)
• William Raymond Steiger (1969–)
  • Ambassador Extraordinary and Plenipotentiary, Mozambique (Nomination of January 10, 2007, not acted on by the Senate.)
• *Andrew Lee Steigman (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (1975–1977)
  • Ambassador Extraordinary and Plenipotentiary, Sao Tome and Principe (1975–1977)
• *Robert Andrew Stein (1919–)
  • Principal Officer, Yemen (1972)
  • Chargé d’Affaires ad interim, Libya (1974)
  • Chargé d’Affaires ad interim, Yemen ()
  • Chargé d’Affaires ad interim, Mauritania ()
• *Donald K. Steinberg (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Angola (1995–1998)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (Nomination not acted upon by the Senate.)
• James Braidy Steinberg (1953–)
  • Director of Policy Planning (1994–1996)
  • Deputy Secretary of State (2009–2011)
• Laurence Adolph Steinhardt (1892–1950)
  • Envoy Extraordinary and Minister Plenipotentiary, Sweden (1933–1937)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1937–1939)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1939–1941)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1942–1945)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1944–1948)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1948–1950)
• Richard Allen Stengel (1955–)
  • Under Secretary of State for Public Diplomacy and Public Affairs (2014–2016)
• *Ben Solomon Stephansky (1913–1999)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1961–1963)
• *Doris Kathleen Stephens (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Korea (2008–2011)
• *Barbara Jean Stephenson (1958–)
  • Ambassador Extraordinary and Plenipotentiary, Panama (2008–2010)
• Thomas F. Stephenson (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (2007–2009)
• *Adam H. Sterling (1960–)
  • Ambassador Extraordinary and Plenipotentiary, Slovakia (2016–2019)
• *Frederick Augustine Sterling (1876–1957)
  • Envoy Extraordinary and Minister Plenipotentiary, Ireland (1927–1934)
  • Envoy Extraordinary and Minister Plenipotentiary, Bulgaria (1933–1936)
  • Envoy Extraordinary and Minister Plenipotentiary, Estonia (1937)
  • Envoy Extraordinary and Minister Plenipotentiary, Latvia (1937)
  • Envoy Extraordinary and Minister Plenipotentiary, Sweden (1938–1941)
• *Michael Edmund Sterner (1928–)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (1974–1976)
• John Batterson Stetson Jr. (1884–1952)
  • Envoy Extraordinary and Minister Plenipotentiary, Finland (1925)
  • Envoy Extraordinary and Minister Plenipotentiary, Poland (1925–1929)
• Edward Reilly Stettinius Jr. (1900–1949)
  • Under Secretary of State (1943–1944)
  • Secretary of State (1944–1945)
  • Representative of the U.S.A. to the United Nations (1945–1946)
• *John Christopher Stevens (1960–2012)
  • Ambassador Extraordinary and Plenipotentiary, Libya (2012)
• John Leavitt Stevens (1820–1895)
  • Minister Resident, Paraguay (1870–1873)
  • Minister Resident, Uruguay (1870–1873)
  • Minister Resident, Sweden (1877–1883)
  • Minister Resident, Hawaii (1889–1890)
  • Envoy Extraordinary and Minister Plenipotentiary, Hawaii (1890–1893)
• Adlai Ewing Stevenson II (1900–1965)
  • Representative of the U.S.A. to the United Nations (1961–1965)
• Andrew Stevenson (1784–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1836–1841)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (Nomination of May 20, 1834, rejected by the Senate.)
• John Reese Stevenson (1921–1997)
  • Legal Adviser (1969–1973)
• *Robert Ayer Stevenson (1918–2000)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (1974–1978)
• *Susan N. Stevenson (?–)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (2019)
• William Edwards Stevenson (1900–1985)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1961–1964)
• *Charles Allen Stewart (1907–1973)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1962–1964)
• *James Bolton Stewart (1882–1969)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1943–1945)
• *John Todd Stewart (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Moldova (1995–1998)
• Joseph J. Stewart (?–)
  • Minister Resident, Turkey (Not commissioned; nomination not confirmed by the Senate.)
• *Karen Brevard Stewart (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Belarus (2006–2008)
  • Ambassador Extraordinary and Plenipotentiary, Laos (2010–2013)
  • Ambassador Extraordinary and Plenipotentiary, Marshall Islands (2016–2020)
• Judith Ann Stewart-Stock (1946–)
  • Assistant Secretary of State for Educational and Cultural Affairs (2010–2013)
• *William John Stibravy (1916–2013)
  • Representative of the U.S.A. to the United Nations Industrial Development Organization (Vienna) (1968–1977)
• William Henry Stiles (1808–1865)
  • Chargé d’Affaires, Austria (1845–1849)
• David Stilwell (?–)
  • Assistant Secretary of State for East Asian and Pacific Affairs (2019)
• Thomas Neel Stilwell (1830–1874)
  • Minister Resident, Venezuela (1867–1868)
• Edward W. Stimpson (1934–2009)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1999–2004)
• Harry Farnum Stimpson Jr. (1913–2005)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1959–1961)
• Frederic Jesup Stimson (1855–1943)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1914–1921)
• Henry Lewis Stimson (1867–1950)
  • Secretary of State (1929–1933)
• Charles Richard Stith (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1998–2001)
• Francis Brown Stockbridge (1826–1894)
  • Minister Resident, Netherlands (1875)
• Edward Grant Stockdale (1915–1963)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1961–1962)
• Gilchrist Baker Stockton (1890–1972)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (1930–1933)
• John Potter Stockton (1826–1900)
  • Minister Resident, Holy See (1858–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (Not commissioned; nomination rejected by the Senate.)
• *Walter John Stoessel Jr. (1920–1986)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1968–1972)
  • Assistant Secretary of State for European and Eurasian Affairs (1972–1974)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1973–1976)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1976–1981)
  • Under Secretary of State for Political Affairs (1981–1982)
  • Career Ambassador (1981)
  • Deputy Secretary of State (1982)
  • Secretary of State ad interim (1982)
• Edmund Stohr (1918–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1982–1990)
• Carl Burton Stokes (1927–1996)
  • Ambassador Extraordinary and Plenipotentiary, Seychelles (1994–1995)
• *William A. Stoltzfus Jr. (1924–)
  • Ambassador Extraordinary and Plenipotentiary, Bahrain (1971–1974)
  • Ambassador Extraordinary and Plenipotentiary, Kuwait (1971–1976)
  • Ambassador Extraordinary and Plenipotentiary, Qatar (1971–1974)
  • Ambassador Extraordinary and Plenipotentiary, Oman (1972–1974)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (1972–1974)
• *Galen Luther Stone (1921–)
  • Ambassador Extraordinary and Plenipotentiary, Laos (1975)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1978–1981)
• Richard B. Stone (1928–)
  • Ambassador at Large (1983–1984)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1991–1993)
• *Robert Wilson Stookey (1917–1998)
  • Chargé d’Affaires ad interim, Yemen (Was serving as Chargé d’Affaires ad interim when Legation Taiz was raised to Embassy status, Jan 28, 1963 (Embassy transferred to San’a in 1966).)
• *Mark C. Storella (1959–)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (2010–2013)
• Bellamy Storer (1847–1922)
  • Envoy Extraordinary and Minister Plenipotentiary, Belgium (1897–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1899–1902)
  • Ambassador Extraordinary and Plenipotentiary, Austria (1902–1906)
• *James Story (?–)
  • Chargé d’Affaires, Venezuela (2018)
• Edwin Wallace Stoughton (1818–1882)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1877–1879)
• Pleasant Alexander Stovall (1857–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1913–1919)
• Jesse Isidor Straus (1872–1936)
  • Ambassador Extraordinary and Plenipotentiary, France (1933–1936)
• Oscar Solomon Straus (1850–1926)
  • Envoy Extraordinary and Minister Plenipotentiary, Turkey (1887–1889)
  • Envoy Extraordinary and Minister Plenipotentiary, Turkey (1898–1899)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1909–1910)
• Robert Schwarz Strauss (1918–2014)
  • U.S. Trade Representative (1977–1979)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1991–1992)
• Robert Strausz-Hupé (1903–2002)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1970–1971)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1970–1971)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1972–1974)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1974–1976)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1976–1977)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1981–1989)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• *Edward J. Streator (1930–)
  • Representative of the U.S.A. to the Organization for Economic Cooperation and Development (Paris) (1984–1987)
• Gordon L. Streeb (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (1990–1993)
• Theodore Cuyler Streibert (1899–1987)
  • Director of the U.S. Information Agency (1953–1956)
• Edward Henry Strobel (1855–1908)
  • Third Assistant Secretary of State (1893–1894)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1894)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1894–1897)
• *Carl Walther Strom (1899–1969)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (1956–1959)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1959–1961)
  • Director of the Foreign Service Institute (1961–1962)
• *Eric Stromayer (1960–)
  • Chargé d’Affaires ad interim, Comoros (2011)
  • Chargé d’Affaires ad interim, Madagascar (2011)
  • Ambassador Extraordinary and Plenipotentiary, Togo (2019)
• Lester Corrin Strong (1892–1966)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1953–1957)
• *Robert Campbell Strong (1915–1999)
  • Ambassador Extraordinary and Plenipotentiary, Iraq (1963–1967)
• Thomas F. Stroock (1925–2009)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1989–1992)
• Cynthia Stroum (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (2009–2011)
• *James Curtis Struble (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Peru (2003–2007)
• Granville Stuart (1834–1918)
  • Envoy Extraordinary and Minister Plenipotentiary, Paraguay (1894–1898)
  • Envoy Extraordinary and Minister Plenipotentiary, Uruguay (1894–1898)
• John Leighton Stuart (1876–1962)
  • Ambassador Extraordinary and Plenipotentiary, China (1946–1949)
• Robert D. Stuart (1916–2014)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1984–1989)
• R. Douglas Stuart (1886–1975)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1953–1956)
• *Wallace Wyman Stuart (1912–)
  • Chargé d’Affaires ad interim, Panama (1964)
• James Flynn Stutesman (1860–1917)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (1908–1910)
• *Roscoe Seldon Suddarth (1935–2013)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1987–1990)
• Daniel S. Sullivan (1964–)
  • Assistant Secretary of State for Economic, Energy, and Business Affairs (2006–2009)
• Jacob J. Sullivan (1976–)
  • Director of Policy Planning (2011–2013)
• James Mark Sullivan (1873–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1913–1915)
• John J. Sullivan (1959–)
  • Deputy Secretary of State (2017)
  • Ambassador Extraordinary and Plenipotentiary, Russia (2019)
• *Joseph Gerard Sullivan (1944–)
  • Principal Officer, Cuba (1996)
  • Ambassador Extraordinary and Plenipotentiary, Angola (1998–2001)
  • Ambassador Extraordinary and Plenipotentiary, Zimbabwe (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (Nomination not acted upon by the Senate.)
• *Kevin K. Sullivan (1964–)
  • Chargé d’Affaires ad interim, Argentina (2015)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (2018)
• Michael Sullivan (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1998–2001)
• Peter John Sullivan (1821–1883)
  • Minister Resident, Colombia (1867–1869)
• *Stephanie Sanders Sullivan (1958–)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (2013–2017)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (2018)
• *William Healy Sullivan (1922–2013)
  • Ambassador Extraordinary and Plenipotentiary, Laos (1964–1969)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1973–1977)
  • Ambassador Extraordinary and Plenipotentiary, Iran (1977–1979)
• *George Thomas Summerlin (1872–1947)
  • Chargé d’Affaires ad interim, Mexico (1924)
  • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1925–1929)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (1929–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1934)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1935–1937)
  • Chief of Protocol (1937)
• Allingham Burks Summers (1898–1977)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (1960–1961)
• Thomas Sumter Jr. (1768–1840)
  • Minister Plenipotentiary, Portugal (1809–1819)
• Louis B. Susman (1937–)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (2009–2013)
• *Peter Adams Sutherland (1933–1994)
  • Ambassador Extraordinary and Plenipotentiary, Bahrain (1980–1983)
• *James S. Sutterlin (1922–)
  • Inspector General of the Department of State and the Foreign Service (1973–1974)
  • Director of Policy Planning (1973)
• Geoffrey Swaebe (1911–1997)
  • Representative of the U.S.A. to the European Office of the United Nations (Geneva) (1981–1983)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1983–1988)
• *James Christopher Swan (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (2008–2011)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Kinshasa) (2013–2016)
• *Emory Coblentz Swank (1922–2010)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (1970–1973)
• *David Haywood Swartz (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Belarus (1992–1994)
• Alexander Sweek (1861–1950)
  • Envoy Extraordinary and Minister Plenipotentiary, Thailand (Not commissioned; nomination not confirmed by the Senate.)
• Laurits Selmer Swenson (1865–1947)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (1897–1905)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1909–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Norway (1911–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Norway (1921–1930)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1931–1934)
• Richard Nelson Swett (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1998–2001)
• John Franklin Swift (1829–1891)
  • Envoy Extraordinary and Minister Plenipotentiary, Japan (1889–1891)
• *James W. Swihart Jr. (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Lithuania (1994–1997)
• Charles J. Swindells (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Samoa (2001–2005)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (2001–2005)
• *William Lacy Swing (1934–)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (1979–1981)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1981–1985)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (1989–1992)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (1992–1993)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (1993–1998)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Kinshasa) (1998–2001)
• James Wadsworth Symington (1927–)
  • Chief of Protocol (1966–1968)
• John Fife Symington Jr. (1910–2007)
  • Ambassador Extraordinary and Plenipotentiary, Trinidad and Tobago (1969–1971)
• *W. Stuart Symington IV (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (2006–2008)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (2008–2011)
  • Ambassador Extraordinary and Plenipotentiary, Nigeria (2016–2019)
• *Harrison Matthews Symmes (1921–2010)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1967–1970)
• *Stephanie Syptak-Ramnath (?–)
  • Chargé d’Affaires ad interim, Singapore (2019)