Principal Officers and Chiefs of Mission, by Name: Y

Note: Career Foreign Service appointees are asterisked.

  • *Kenneth Spencer Yalowitz (1941–)
    • Ambassador Extraordinary and Plenipotentiary, Belarus (1994–1997)
    • Ambassador Extraordinary and Plenipotentiary, Georgia (1998–2001)
  • *Donald Y. Yamamoto (1953–)
    • Ambassador Extraordinary and Plenipotentiary, Djibouti (2000–2003)
    • Ambassador Extraordinary and Plenipotentiary, Ethiopia (2006–2009)
    • Ambassador Extraordinary and Plenipotentiary, Somalia (2018)
  • *Robert T. Yamate (1950–)
    • Ambassador Extraordinary and Plenipotentiary, Comoros (2015–2018)
    • Ambassador Extraordinary and Plenipotentiary, Madagascar (2015–2018)
  • Benjamin Cudworth Yancey (1817–1891)
    • Minister Resident, Argentina (1858–1859)
  • *John Melvin Yates (1939–)
    • Ambassador Extraordinary and Plenipotentiary, Cape Verde (1983–1986)
    • Chargé d’Affaires ad interim, Congo (Kinshasa) (1992–1995)
    • Ambassador Extraordinary and Plenipotentiary, Benin (1995–1998)
    • Ambassador Extraordinary and Plenipotentiary, Cameroon (1999–2001)
    • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1999–2001)
  • *Mary Carlin Yates (1946–)
    • Ambassador Extraordinary and Plenipotentiary, Burundi (1999–2002)
    • Ambassador Extraordinary and Plenipotentiary, Ghana (2003–2005)
    • Chargé d’Affaires, Sudan (2011–2012)
  • George Helm Yeaman (1829–1908)
    • Minister Resident, Denmark (1865–1870)
  • *James Howard Yellin (1938–)
    • Ambassador Extraordinary and Plenipotentiary, Burundi (2002–2005)
  • Clayton Keith Yeutter (1930–2017)
    • U.S. Trade Representative (1985–1989)
  • *John Raymond Ylitalo (1916–1987)
    • Ambassador Extraordinary and Plenipotentiary, Paraguay (1969–1972)
  • Daniel W. Yohannes (1952–)
    • Representative of the U.S.A. to the Organization for Economic Cooperation and Development (Paris) (2014–2017)
  • *Charles Woodruff Yost (1907–1981)
    • Chargé d’Affaires, Thailand (1946)
    • Envoy Extraordinary and Minister Plenipotentiary, Laos (1954–1955)
    • Ambassador Extraordinary and Plenipotentiary, Laos (1955–1956)
    • Ambassador Extraordinary and Plenipotentiary, Morocco (1958–1961)
    • Ambassador Extraordinary and Plenipotentiary, Syria (1958)
    • Career Ambassador (1964)
    • Representative of the U.S.A. to the United Nations (1969–1971)
  • *Robert Lloyd Yost (1922–1990)
    • Ambassador Extraordinary and Plenipotentiary, Burundi (1972–1974)
    • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (1978–1982)
  • Andrew Jackson Young (1932–)
    • Representative of the U.S.A. to the United Nations (1977–1979)
  • *Andrew R. Young (?–)
    • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (2020)
  • *Eugene Young (?–)
    • Chargé d’Affaires ad interim, Austria (2017–2018)
  • Evan Erastus Young (1878–1946)
    • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1911–1912)
    • Envoy Extraordinary and Minister Plenipotentiary, Dominican Republic (1925–1929)
    • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (Took oath of office, but did not proceed to post.)
  • John Russell Young (1840–1899)
    • Envoy Extraordinary and Minister Plenipotentiary, China (1882–1885)
  • *Johnny Young (1940–)
    • Ambassador Extraordinary and Plenipotentiary, Sierra Leone (1989–1992)
    • Ambassador Extraordinary and Plenipotentiary, Togo (1994–1997)
    • Ambassador Extraordinary and Plenipotentiary, Bahrain (1997–2001)
    • Ambassador Extraordinary and Plenipotentiary, Slovenia (2001–2004)
    • Career Ambassador (2004)
  • Kenneth Todd Young Jr. (1916–1972)
    • Ambassador Extraordinary and Plenipotentiary, Thailand (1961–1963)
  • Philip Young (1910–1987)
    • Ambassador Extraordinary and Plenipotentiary, Netherlands (1957–1960)
  • Pierce Manning Butler Young (1836–1896)
    • Envoy Extraordinary and Minister Plenipotentiary, Guatemala (1893–1896)
    • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1893–1896)
  • *Stephen M. Young (1951–)
    • Ambassador Extraordinary and Plenipotentiary, Kyrgyzstan (2003–2005)
  • *Marie L. Yovanovitch (1958–)
    • Ambassador Extraordinary and Plenipotentiary, Kyrgyzstan (2005–2008)
    • Ambassador Extraordinary and Plenipotentiary, Armenia (2008–2011)
    • Ambassador Extraordinary and Plenipotentiary, Ukraine (2016–2019)
  • *Joseph Yousang Yun (1954–)
    • Ambassador Extraordinary and Plenipotentiary, Malaysia (2013–2016)
  • *Thomas W. Yun (1949–)
    • Director of the Office of Medical Services (2008–2011)
  • Raul Yzaguirre (1939–)
    • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (2010–2013)