Principal Officers and Chiefs of Mission, by Name: B

Note: Career Foreign Service appointees are asterisked.

• *Marc Allen Baas (1948–)
  • Chargé d’Affaires ad interim, Ethiopia (1992)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (1992–1994)
• Harriet Coons Babbitt (1947–)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (1993–1997)
• Ambrose Baber (1792–1846)
  • Chargé d’Affaires, Italy (1841–1844)
• John Edmund Bacon (1830–1897)
  • Chargé d’Affaires, Paraguay (1885–1888)
  • Chargé d’Affaires, Uruguay (1885–1888)
  • Minister Resident, Paraguay (1888)
  • Minister Resident, Uruguay (1888)
• Robert Bacon (1860–1919)
  • Assistant Secretary of State (1905–1909)
  • Ambassador Extraordinary and Plenipotentiary, France (1909–1912)
  • Secretary of State (1909)
• Adam Badeau (1831–1895)
  • Minister Resident, Belgium (1875)
  • Chargé d’Affaires, Denmark (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• John Stothoff Badeau (1903–1995)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (1961–1964)
• *Jeffrey A. Bader (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Namibia (1999–2001)
• William B. Bader (1931–2016)
  • Assistant Secretary of State for Educational and Cultural Affairs (1999–2001)
• Gerhard Adolph Bading (1870–1946)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1922–1929)
• Daniel Brooks Baer (1977–)
  • Representative of the U.S.A. to the Organization for Security and Cooperation in Europe (Vienna) (2013–2017)
• Arthur Pendleton Bagby (1794–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1848–1849)
• Elizabeth Frawley Bagley (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1994–1997)
• Catherine Todd Bailey (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Latvia (2004–2008)
• *Arthur Bailly-Blanchard (1855–1925)
  • Envoy Extraordinary and Minister Plenipotentiary, Haiti (1914–1921)
• *Jess Lippencott Baily (1960–)
  • Ambassador Extraordinary and Plenipotentiary, Macedonia (2014–2019)
• Howard Henry Baker Jr. (1925–2014)
  • Ambassador Extraordinary and Plenipotentiary, Japan (2001–2005)
• James Addison Baker III (1930–)
  • Secretary of State (1989–1992)
• James Marion Baker (1861–1940)
  • Envoy Extraordinary and Minister Plenipotentiary, Thailand (1933–1936)
• Jehu Baker (1822–1903)
  • Minister Resident, Venezuela (1878–1881)
  • Minister Resident, Venezuela (1884)
  • Minister Resident/Consul General, Venezuela (1884–1885)
• *John Alexander Baker Jr. (1927–1994)
  • Assistant Secretary of State for Population, Refugees, and Migration Affairs (1979–1980)
• Lewis Baker (1832–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1893–1897)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1893–1897)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1893–1897)
• *Charles Franklin Baldwin (1902–1993)
  • Ambassador Extraordinary and Plenipotentiary, Malaysia (1961–1964)
• William Woodward Baldwin (1862–1954)
  • Third Assistant Secretary of State (1896–1897)
• George Wildman Ball (1909–1994)
  • Under Secretary for Economic Growth, Energy, and the Environment (1961)
  • Under Secretary of State (1961–1966)
  • Representative of the U.S.A. to the United Nations (1968)
• William Lockhart Ball III (1948–)
  • Assistant Secretary of State for Legislative Affairs (1985–1986)
• *Richard L. Baltimore III (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Oman (2002–2006)
• Edgar Addison Bancroft (1857–1925)
  • Ambassador Extraordinary and Plenipotentiary, Japan (1924–1925)
• George Bancroft (1800–1891)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1846–1849)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1867–1871)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1871–1874)
• *Donald Keith Bandler (1947–2017)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1999–2002)
• *David Morgan Bane (1915–2004)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (1965–1969)
• *Charles R. Baquet III (1941–)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (1991–1993)
• Robert C. Barber (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (2015–2017)
• James Barbour (1775–1842)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1828–1829)
• *Robert E. Barbour (1927–)
  • Ambassador Extraordinary and Plenipotentiary, Suriname (1984–1987)
• *Walworth Barbour (1908–1982)
  • Ambassador Extraordinary and Plenipotentiary, Israel (1961–1973)
  • Career Ambassador (1969)
• Hugh Douglas Barclay (1932–)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (2003–2007)
• *Richard Clark Barkley (1932–)
  • Ambassador Extraordinary and Plenipotentiary, German Democratic Republic (1988–1990)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (1991–1994)
• *Erica J. Barks-Ruggles (1967–)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (2014–2018)
• *Peter H. Barlerin (?–)
  • Ambassador Extraordinary and Plenipotentiary, Cameroon (2017–2020)
• Joel Barlow (1754–1812)
  • Minister Plenipotentiary, France (1811–1812)
• Daniel Dewey Barnard (1797–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1850–1853)
• *Malcolm R. Barnebey (1927–)
  • Chargé d’Affaires ad interim, Belize (1983)
  • Ambassador Extraordinary and Plenipotentiary, Belize (1983–1985)
• *Douglas M. Barnes (1955–)
  • Chargé d’Affaires ad interim, Costa Rica (2005)
• *Harry George Barnes Jr. (1926–2012)
  • Ambassador Extraordinary and Plenipotentiary, Romania (1973–1977)
  • Director General of the Foreign Service (1977–1981)
  • Ambassador Extraordinary and Plenipotentiary, India (1981–1985)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1985–1988)
• Marsha E. Barnes (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Suriname (2003–2006)
• *Robert Gaylord Barnes (1914–1977)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1964–1966)
• *Shirley Elizabeth Barnes (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Madagascar (1998–2001)
• *Joyce A. Barr (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Namibia (2004–2007)
  • Assistant Secretary of State for Administration (2011–2017)
• Barbara McConnell Barrett (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Finland (2008–2009)
• *Dennis P. Barrett (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Madagascar (1992–1995)
• Edward Ware Barrett (1910–1989)
  • Assistant Secretary of State for Public Affairs (1950–1952)
• John Barrett (1866–1938)
  • Minister Resident/Consul General, Thailand (1894–1898)
  • Envoy Extraordinary and Minister Plenipotentiary, Argentina (1903–1904)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1904–1905)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1905–1906)
• *Robert South Barrett IV (1927–2004)
  • Chargé d’Affaires ad interim, Comoros (1980)
  • Chargé d’Affaires ad interim, Madagascar (1980)
  • Ambassador Extraordinary and Plenipotentiary, Djibouti (1988–1991)
• Daniel Moreau Barringer (1806–1873)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1849–1853)
• Washington Barrow (1817–1866)
  • Chargé d’Affaires, Portugal (1841–1844)
• *Leland Judd Barrows (1906–1988)
  • Ambassador Extraordinary and Plenipotentiary, Cameroon (1960–1966)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1960–1961)
• *Robert Louis Barry (1934–)
  • Ambassador Extraordinary and Plenipotentiary, Bulgaria (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Indonesia (1992–1995)
• William Taylor Barry (1784–1835)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1835)
• Charlene Barshevsky (1949–)
  • U.S. Trade Representative (1997)
• *Norman Edwin Barth (1927–2010)
  • Chargé d’Affaires ad interim, Lesotho (1969)
• *Reginald Bartholomew (1936–2012)
  • Assistant Secretary of State for Politico-Military Affairs (1979–1981)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (1983–1986)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1986–1989)
  • Under Secretary of State for Arms Control and International Security Affairs (1989–1992)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1992–1993)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1993–1997)
• *Frederic Pearson Bartlett (1909–1970)
  • Ambassador Extraordinary and Plenipotentiary, Madagascar (1960–1962)
• Joseph Jackson Bartlett (1834–1893)
  • Minister Resident, Sweden (1867–1869)
• Frederick D. Barton (1949–)
  • Assistant Secretary of State for Conflict and Stabilization Operations (2012–2014)
• Seth Barton (1795–1850)
  • Chargé d’Affaires, Chile (1847–1849)
• Thomas Pennant Barton (1803–1869)
  • Chargé d’Affaires ad interim, France (1835)
• Herman Benjamin Baruch (1872–1953)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1945–1947)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1947–1949)
• Matthew Winthrop Barzun (1970–)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (2009–2011)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (2013–2017)
• Edward John Bash (1915–1994)
  • Director of the Foreign Service Institute (was Acting Director, Jan 1954-Mar 1955.)
• *Adrian A. Basora (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1992)
  • Ambassador Extraordinary and Plenipotentiary, Czech Republic (1992–1995)
• *John R. Bass (1964–)
  • Ambassador Extraordinary and Plenipotentiary, Georgia (2009–2012)
  • Executive Secretary (2012–2014)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (2014)
  • Ambassador Extraordinary and Plenipotentiary, Turkey (2014–2017)
  • Ambassador Extraordinary and Plenipotentiary, Afghanistan (2017–2020)
• Ebenezer Don Carlos Bassett (1833–1908)
  • Minister Resident/Consul General, Haiti (1869–1877)
• *Leslie Ann Bassett (1959–)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (2014–2017)
• George Sherman Batcheller (1837–1908)
  • Minister Resident/Consul General, Portugal (1890–1892)
• *Lucius Durham Battle (1918–2008)
  • Executive Secretary (1961–1962)
  • Assistant Secretary of State for Educational and Cultural Affairs (1962–1964)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (1964–1967)
  • Assistant Secretary of State for Near Eastern Affairs (1967–1968)
• Michael Anthony Battle Sr. (1950–)
  • Representative of the U.S.A. to the African Union (2009–2013)
• *Vincent Martin Battle (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (2001–2004)
• William Cullen Battle (1920–2008)
  • Ambassador Extraordinary and Plenipotentiary, Australia (1962–1964)
• Max Sieben Baucus (1941–)
  • Ambassador Extraordinary and Plenipotentiary, China (2014–2017)
• Denise Campbell Bauer (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (2013–2017)
• Frank Baxter (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (2006–2009)
• Henry Baxter (1821–1873)
  • Minister Resident, Honduras (1869–1873)
• Charles Ulrick Bay (1888–1955)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1946–1953)
• James Asheton Bayard (1767–1815)
  • Minister Plenipotentiary, France (1801)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1815)
• Richard Henry Bayard (1796–1868)
  • Chargé d’Affaires, Belgium (1850–1853)
• Thomas Francis Bayard (1828–1898)
  • Secretary of State (1885–1889)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1893–1897)
• Francis Baylies (1784–1852)
  • Chargé d’Affaires, Argentina (1832)
• *Arthur Eugene Beach (1907–1973)
  • Chargé d’Affaires, Sudan (1956)
• Edward Fitzgerald Beale (1822–1893)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (1876–1877)
• Truxtun Beale (1856–1936)
  • Minister Resident/Consul General, Iran (1891–1892)
  • Minister Resident/Consul General, Greece (1892–1893)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1892)
  • Envoy Extraordinary and Minister Plenipotentiary, Serbia (1892)
  • Minister Resident/Consul General, Serbia (1892)
  • Envoy Extraordinary and Minister Plenipotentiary, Romania (1892)
  • Minister Resident/Consul General, Romania (1892)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Greece (1893)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Serbia (1893)
  • Envoy Extraordinary and Minister Plenipotentiary/Consul General, Romania (1893)
• *Wilson Thomas Moore Beale Jr. (1909–1997)
  • Ambassador Extraordinary and Plenipotentiary, Jamaica (1965–1967)
• *Jacob Dyneley Beam (1908–1993)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1957–1961)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1966–1969)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1969–1973)
• Mary Elizabeth Beams (1956–)
  • Counselor (2017)
• *Maurice Darrow Bean (1928–2009)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1977–1979)
• Richard Beardsley (1838–1876)
  • Agent/Consul General, Egypt (1872–1876)
• *Willard Leon Beaulac (1899–1990)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1944–1947)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1947–1951)
  • Ambassador Extraordinary and Plenipotentiary, Cuba (1951–1953)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1953–1956)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1953)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1956–1960)
• Arthur Matthias Beaupre (1853–1919)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1903)
  • Envoy Extraordinary and Minister Plenipotentiary, Argentina (1904–1908)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1908–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1908–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Cuba (1911–1913)
• *Joseph Beceila (?–)
  • Chargé d’Affaires ad interim, Costa Rica (1994)
• Loftus Eugene Becker (1911–1977)
  • Legal Adviser (1957–1959)
• Ralph Elihu Becker (1907–1994)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1976–1977)
• Henry Bedinger (1812–1858)
  • Chargé d’Affaires, Denmark (1853–1854)
  • Minister Resident, Denmark (1854–1858)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• *Robert Stephen Beecroft (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (2008–2011)
  • Ambassador Extraordinary and Plenipotentiary, Iraq (2012–2014)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (2014–2017)
• Josiah Horton Beeman (1935–2006)
  • Ambassador Extraordinary and Plenipotentiary, Samoa (1994–1999)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (1994–1999)
• Charlotte L. Beers (1935–)
  • Under Secretary of State for Public Diplomacy and Public Affairs (2001–2003)
• Robert Rand Brittingham Beers (1942–)
  • Assistant Secretary of State for International Narcotics and Law Enforcement Affairs (1998–2002)
• *Taylor Garrison Belcher (1920–1990)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1964–1969)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1969–1974)
• *Ferdinand Lammot Belin (1881–1961)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1932–1933)
• Colleen Bradley Bell (1967–)
  • Ambassador Extraordinary and Plenipotentiary, Hungary (2014–2017)
• David Elliott Bell (1919–2000)
  • Administrator of the Agency for International Development (1961–1966)
• Isaac Bell Jr. (1846–1889)
  • Minister Resident, Netherlands (1885–1888)
• *James Dunbar Bell (1911–1979)
  • Ambassador Extraordinary and Plenipotentiary, Malaysia (1964–1969)
• *John Oscar Bell (1912–2000)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1961–1965)
• *Richard K. Bell (?–)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (2019)
• *William M. Bellamy (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Kenya (2003–2006)
• John B. Bellinger 3rd (1960–)
  • Legal Adviser (2005–2009)
• *Natale H. Bellocchi (1926–2014)
  • Ambassador Extraordinary and Plenipotentiary, Botswana (1985–1988)
• August Belmont (1816–1890)
  • Chargé d’Affaires, Netherlands (1853–1854)
  • Minister Resident, Netherlands (1854–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Perry Belmont (1851–1947)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1888–1889)
• *Lawrence Neal Benedict (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Cape Verde (1996–1999)
• Daniel Benjamin (1961–)
  • Director of the Bureau of Counterterrorism (2009–2012)
  • Ambassador at Large (2009–2012)
• Samuel Greene Wheeler Benjamin (1837–1914)
  • Minister Resident/Consul General, Iran (1883–1885)
  • Chargé d’Affaires and Consul General, Iran (1883)
• *Eric D. Benjaminson (1960–)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (2010–2013)
  • Ambassador Extraordinary and Plenipotentiary, Sao Tome and Principe (2010–2013)
• Douglas Joseph Bennet Jr. (1938–)
  • Assistant Secretary of State for Legislative Affairs (1977–1979)
  • Administrator of the Agency for International Development (1979–1981)
  • Assistant Secretary of State for International Organization Affairs (1993–1995)
• Henry Garland Bennett (1886–1951)
  • Administrator of the Technical Cooperation Administration (1950–1951)
• *John E. Bennett (1941–)
  • Ambassador Extraordinary and Plenipotentiary, Equatorial Guinea (1991–1994)
• *William Tapley Bennett Jr. (1917–1994)
  • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (1964–1966)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1966–1969)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1977–1983)
  • Assistant Secretary of State for Legislative Affairs (1983–1985)
• Lucy Wilson Peters Benson (1927–)
  • Under Secretary of State for Arms Control and International Security Affairs (1977–1980)
• William Burnett Benton (1900–1973)
  • Assistant Secretary of State for Public Affairs (1945–1947)
• Andrew Henry Thomas Berding (1902–1989)
  • Assistant Secretary of State for Public Affairs (1957–1961)
• *Samuel David Berger (1911–1980)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1961–1964)
• *Alf Echols Bergeson (1924–1995)
  • Chargé d’Affaires ad interim, Cambodia (1965)
• Jeffrey Thomas Bergner (1946–)
  • Assistant Secretary of State for Legislative Affairs (2005–2008)
• *Harry Earl Bergold Jr. (1931–1995)
  • Ambassador Extraordinary and Plenipotentiary, Hungary (1980–1983)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (Not commissioned; nomination of June 6, 1988, was not acted upon by the Senate.)
• *Donald C. Bergus (1920–1998)
  • Principal Officer, Egypt (1972)
  • Ambassador Extraordinary and Plenipotentiary, Sudan (1977–1980)
• Peter Berkowitz (?–)
  • Director of Policy Planning (2019)
• Adolf Augustus Berle Jr. (1895–1971)
  • Assistant Secretary of State (1938–1944)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1945–1946)
• *Maurice Marshall Bernbaum (1910–2008)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1960–1965)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1965–1969)
• *Marcia Stephens Bloom Bernicat (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea-Bissau (2008–2011)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (2008–2011)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (2014–2018)
• Herman Bernstein (1876–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, Albania (1930–1933)
• Robin S. Bernstein (?–)
  • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (2018)
• Stuart A. Bernstein (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (2001–2005)
• Frederick M. Bernthal (1943–)
  • Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs (1988–1990)
• *Burton Yost Berry (1901–1985)
  • Ambassador Extraordinary and Plenipotentiary, Iraq (1952–1954)
• *Gregory L. Berry (1951–)
  • Principal Officer, Libya (2006)
  • Chargé d’Affaires ad interim, Libya (2006)
• *James Lampton Berry (1908–1980)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1958–1959)
• Morrell John Berry (1959–)
  • Ambassador Extraordinary and Plenipotentiary, Australia (2013–2016)
• *Randy W. Berry (?–)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (2018)
• Thomas A. Betro (1959–)
  • Inspector General of the Department of State and the Foreign Service (Nomination of Jun. 27, 2008 not acted upon by the Senate.)
• Donald Sternhoff Beyer Jr. (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (2009–2013)
  • Ambassador Extraordinary and Plenipotentiary, Liechtenstein (2009–2013)
• *Gordon Robert Beyer (1930–2010)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1980–1983)
• *John Ross Beyrle (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Bulgaria (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Russia (2008–2012)
• *Mark J. Bezner (1953–)
  • Chargé d’Affaires, Palau (2006–2009)
• Anthony Joseph Drexel Biddle Jr. (1896–1961)
  • Envoy Extraordinary and Minister Plenipotentiary, Norway (1935–1937)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1937–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Czechoslovakia (1941–1943)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1941–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1941–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Norway (1941–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1941–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Yugoslavia (1941–1942)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Yugoslavia (1942–1943)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1943)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1961)
• Thomas Biddle (1827–1875)
  • Minister Resident, El Salvador (1871–1873)
  • Minister Resident, Ecuador (1875)
• Benjamin A. Bidlack (1804–1849)
  • Chargé d’Affaires, Colombia (1845–1849)
• Stephen E. Biegun (?–)
  • Deputy Secretary of State (2019)
• Everett E. Bierman (1924–2017)
  • Ambassador Extraordinary and Plenipotentiary, Solomon Islands (1986–1989)
  • Ambassador Extraordinary and Plenipotentiary, Papua New Guinea (1986–1989)
  • Ambassador Extraordinary and Plenipotentiary, Vanuatu (1987–1989)
• John Bigelow (1817–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1865–1866)
• John Bigler (1805–1871)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1857–1861)
• *James D. Bindenagel (1949–)
  • Chargé d’Affaires ad interim, Germany (1997)
• John Armour Bingham (1815–1900)
  • Envoy Extraordinary and Minister Plenipotentiary, Japan (1873–1885)
• Robert Worth Bingham (1871–1937)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1933–1937)
• *Jack Robert Binns (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1980–1981)
• Thomas Howard Birch (1875–1929)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1913–1922)
• James Birney (1817–1888)
  • Minister Resident, Netherlands (1876–1882)
• Deborah L. Birx (1956–)
  • Ambassador at Large (2014)
• Milan D. Bish (1929–2001)
  • Ambassador Extraordinary and Plenipotentiary, Dominica (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Antigua and Barbuda (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Saint Vincent and the Grenadines (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Saint Lucia (1981–1984)
• *Clyde Bishop (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Marshall Islands (2006–2008)
• *James Keough Bishop (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Niger (1979–1981)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1987–1990)
  • Ambassador Extraordinary and Plenipotentiary, Somalia (1990–1991)
• *Max Waldo Bishop (1908–1994)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (1955–1958)
• William Henry Bissell (1811–1860)
  • Chargé d’Affaires, Argentina (1853)
• Nisha Desai Biswal (1968–)
  • Assistant Secretary of State for South and Central Asian Affairs (2013–2017)
• *Rena Bitter (?–)
  • Ambassador Extraordinary and Plenipotentiary, Laos (2016–2020)
• Miles Teel Bivins (1947–2009)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (2004–2006)
• J. Cofer Black (1950–)
  • Director of the Bureau of Counterterrorism (2002–2004)
• Jeremiah Sullivan Black (1810–1883)
  • Secretary of State (1860–1861)
• Shirley Jane Temple Black (1928–2014)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1974–1976)
  • Chief of Protocol (1976–1977)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1989–1992)
• *John Dale Blacken (1930–2015)
  • Ambassador Extraordinary and Plenipotentiary, Guinea-Bissau (1986–1989)
• *Peggy Blackford (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea-Bissau (1995–1998)
• William Matthews Blackford (1801–1864)
  • Chargé d’Affaires, Colombia (1842–1844)
• Robert D. Blackwill (1939–)
  • Ambassador Extraordinary and Plenipotentiary, India (2001–2003)
• James Gillespie Blaine (1830–1893)
  • Secretary of State (1881)
  • Secretary of State (1889–1892)
• Walker Blaine (1855–1890)
  • Third Assistant Secretary of State (1881–1882)
• Francis Preston Blair Jr. (1821–1875)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (Not commissioned; nomination rejected by the Senate.)
• Henry William Blair (1834–1920)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1891)
• Jacob Beeson Blair (1821–1901)
  • Minister Resident, Costa Rica (1868–1873)
• William McCormick Blair Jr. (1916–2015)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1961–1964)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1964–1967)
• *James Joseph Blake (1922–2009)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1976–1978)
• *Maxwell Blake (1877–1959)
  • Chargé d’Affaires ad interim, Morocco (1917)
  • Agent/Consul General, Morocco (1917–1922)
  • Diplomatic Agent/Consul General, Morocco (1925–1940)
• *Robert Orris Blake (1921–2015)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1970–1973)
• *Robert Orris Blake Jr. (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (2006–2009)
  • Assistant Secretary of State for South and Central Asian Affairs (2009–2013)
  • Ambassador Extraordinary and Plenipotentiary, Indonesia (2013–2016)
• James J. Blanchard (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1993–1996)
• Lynda Blanchard (?–)
  • Ambassador Extraordinary and Plenipotentiary, Slovenia (2019)
• *Wilton Wendell Blancke (1908–1971)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (1960–1963)
  • Ambassador Extraordinary and Plenipotentiary, Chad (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1960–1961)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (1960–1961)
• *John Propst Blane (1929–2012)
  • Ambassador Extraordinary and Plenipotentiary, Rwanda (1982–1985)
  • Ambassador Extraordinary and Plenipotentiary, Chad (1985–1988)
  • Chargé d’Affaires ad interim, Chad ()
• *John William Blaney (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (2002–2005)
• J. Richard Blankenship (1949–)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (2001–2003)
• *Brent E. Blaschke (1953–)
  • Chargé d’Affaires ad interim, Seychelles (1996)
• Richard Milford Blatchford (1798–1875)
  • Minister Resident, Holy See (1862–1863)
• *Robert Blau (1955–)
  • Chargé d’Affaires ad interim, El Salvador (2010)
• Harmanus Bleecker (1779–1849)
  • Chargé d’Affaires, Netherlands (1839–1842)
• Jeffrey L. Bleich (1961–)
  • Ambassador Extraordinary and Plenipotentiary, Australia (2009–2013)
• Alan John Blinken (1937–)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1993–1998)
• Antony Blinken (1962–)
  • Deputy Secretary of State (2015–2017)
  • Secretary of State (2021)
• Donald M. Blinken (1925–)
  • Ambassador Extraordinary and Plenipotentiary, Hungary (1994–1997)
• *Don Carroll Bliss (1897–1978)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (1957–1960)
• Donald T. Bliss (1941–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (2006–2009)
• *Robert Woods Bliss (1875–1962)
  • Third Assistant Secretary of State (1921–1923)
  • Envoy Extraordinary and Minister Plenipotentiary, Sweden (1923–1927)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1927–1933)
• Julia Chang Bloch (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (1989–1993)
• *Donald A. Blome (?–)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (2019)
• Lincoln P. Bloomfield (1952–)
  • Assistant Secretary of State for Politico-Military Affairs (2001–2005)
• *Richard Joseph Bloomfield (1927–2011)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1976–1978)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1978–1982)
• James Henderson Blount (1837–1903)
  • Envoy Extraordinary and Minister Plenipotentiary, Hawaii (1893)
• Henry Taylor Blow (1817–1875)
  • Minister Resident, Venezuela (1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Brazil (1869–1870)
• William Dunnington Bloxham (1835–1911)
  • Minister Resident/Consul General, Bolivia (1885)
• Joseph Blunt (1792–1860)
  • Commissioner, China (1851)
• *Pierre de Lagarde Boal (1895–1966)
  • Envoy Extraordinary and Minister Plenipotentiary, Nicaragua (1941–1942)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1942–1943)
• *Jane E. Bocklage (?–)
  • Chargé d’Affaires ad interim (2017–2019)
• *Peter William Bodde (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (2008–2010)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (2012–2015)
  • Ambassador Extraordinary and Plenipotentiary, Libya (2015–2017)
• *William Bodde Jr. (1931–)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (1980–1981)
  • Envoy Extraordinary and Minister Plenipotentiary, Kiribati (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Marshall Islands (1990–1992)
• *Barbara K. Bodine (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (1997–2001)
• *Richard Wood Boehm (1926–2011)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Oman (1988–1992)
• *Paul Harold Boeker (1938–2003)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1977–1980)
  • Director of the Foreign Service Institute (1980–1982)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1984–1987)
• Corinne Clairborne Boggs (1916–2013)
  • Ambassador Extraordinary and Plenipotentiary, Holy See (1997–2001)
• *Richard Wayne Bogosian (1937–)
  • Ambassador Extraordinary and Plenipotentiary, Niger (1985–1988)
  • Ambassador Extraordinary and Plenipotentiary, Chad (1990–1993)
• *Avis Thayer Bohlen (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Bulgaria (1996–1999)
  • Assistant Secretary of State for Arms Control (1999–2002)
• *Charles Eustis Bohlen (1904–1974)
  • Counselor (1947–1949)
  • Counselor (1951–1953)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1953–1957)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1957–1959)
  • Career Ambassador (1960)
  • Ambassador Extraordinary and Plenipotentiary, France (1962–1968)
  • Deputy Under Secretary of State for Political Affairs (1967–1969)
  • Secretary of State ad interim (1969)
• E.U. Curtis Bohlen (1927–)
  • Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs (1990–1992)
• George Henry Boker (1823–1890)
  • Minister Resident, Turkey (1871–1875)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1875–1878)
• *David Benjamin Bolen (1923–)
  • Ambassador Extraordinary and Plenipotentiary, Botswana (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, Lesotho (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, Swaziland (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, German Democratic Republic (1977–1980)
• John R. Bolton (1948–)
  • Assistant Secretary of State for International Organization Affairs (1989–1993)
  • Under Secretary of State for Arms Control and International Security Affairs (2001–2005)
  • Representative of the U.S.A. to the United Nations (2005–2006)
• *James Cowles Hart Bonbright (1903–1993)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1955–1958)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1958–1961)
• *Clifford George Bond (1938–)
  • Ambassador Extraordinary and Plenipotentiary, Bosnia and Herzegovina (2001–2004)
• *Michele Thoren Bond (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Lesotho (2010–2012)
  • Assistant Secretary of State for Consular Affairs (2015–2017)
• Henry Bonilla (1954–)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (Nomination of March 15, 2007, withdrawn on June 6, 2007.)
• *Philip Wilson Bonsal (1903–1995)
  • Chargé d’Affaires ad interim, Spain (1947)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1955–1957)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1957–1959)
  • Ambassador Extraordinary and Plenipotentiary, Cuba (1959–1960)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (1961–1962)
• John Frank Bookout (1922–)
  • Ambassador Extraordinary and Plenipotentiary, Saudi Arabia (Nomination of June 3, 1992, not acted upon by the Senate.)
• *Clarence A. Boonstra (1914–2006)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (1967–1969)
• *Donald E. Booth (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (2008–2010)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (2010–2013)
• Ralph Harman Booth (1873–1931)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (1930–1931)
• James Wallace Borden (1810–1882)
  • Commissioner, Hawaii (1858–1861)
• Molly Hering Bordonaro (1968–)
  • Ambassador Extraordinary and Plenipotentiary, Malta (2005–2009)
• *C. Arthur Borg (1926–2004)
  • Executive Secretary (1976–1977)
• *Parker W. Borg (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1993–1996)
  • Ambassador Extraordinary and Plenipotentiary, Burma (Nomination of July 22, 1991, not acted upon by the Senate.)
• Solon Borland (1808–1864)
  • 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 (1853–1854)
• Eric M. Bost (1953–)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (2006–2009)
• *Davis Eugene Boster (1920–2005)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (1974–1976)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1976–1979)
• *Eric J. Boswell (1945–)
  • Director of the Office of Foreign Missions (1993–1998)
  • Director of the Office of Foreign Missions (1995–1998)
  • Assistant Secretary of State for Diplomatic Security (1995–1998)
  • Director of the Office of Foreign Missions (2008–2012)
  • Assistant Secretary of State for Diplomatic Security (2008–2012)
• *Stephen Warren Bosworth (1939–2016)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (1979–1981)
  • Director of Policy Planning (1983–1984)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1997–2001)
• *Donald J. Bouchard (1937–)
  • Assistant Secretary of State for Administration (1985–1987)
• *Richard A. Boucher (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1993–1996)
  • Assistant Secretary of State for Public Affairs (2000–2005)
  • Assistant Secretary of State for South and Central Asian Affairs (2006–2009)
  • Career Ambassador (2008)
• Amy L. Boudurant (1951–)
  • Representative of the U.S.A. to the Organization for Economic Cooperation and Development (Paris) (1997–2001)
• *Mark M. Boulware (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Mauritania (2007–2010)
  • Ambassador Extraordinary and Plenipotentiary, Chad (2010–2013)
• William Boulware (1811–1870)
  • Chargé d’Affaires, Kingdom of the Two Sicilies (1841–1845)
• Henry Sherman Boutell (1856–1926)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1911–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1911)
• Frank Townsend Bow (1901–1972)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1972)
• *William Garton Bowdler (1924–2016)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (1968–1971)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1971–1973)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (1975–1978)
  • Assistant Secretary of State for Intelligence and Research (1978–1979)
  • Assistant Secretary of State for Western Hemisphere Affairs (1979–1981)
• James Bowdoin III (1752–1811)
  • Minister Plenipotentiary, Spain (1804)
• Herbert Wolcott Bowen (1856–1927)
  • Minister Resident/Consul General, Iran (1899–1901)
  • Envoy Extraordinary and Minister Plenipotentiary, Iran (1901)
  • Envoy Extraordinary and Minister Plenipotentiary, Venezuela (1901–1905)
• *Charles R. Bowers (1940–)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1991–1994)
• Claude Gernade Bowers (1878–1958)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1933–1939)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1939–1953)
• *Stephanie L. Bowers (?–)
  • Chargé d’Affaires ad interim, The Bahamas ()
• Robert Richardson Bowie (1909–2013)
  • Director of Policy Planning (1953–1957)
  • Director of Policy Planning (1955–1957)
  • Counselor (1966–1968)
• Chester Bliss Bowles (1901–1986)
  • Ambassador Extraordinary and Plenipotentiary, India (1951–1953)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (1951–1953)
  • Under Secretary of State (1961)
  • Ambassador at Large (1961–1963)
  • Ambassador Extraordinary and Plenipotentiary, India (1963–1969)
• James Butler Bowlin (1804–1874)
  • Minister Resident, Colombia (1854–1857)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• *Thomas David Boyatt (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1978–1980)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1980–1983)
• *Ralph Leo Boyce (1952–)
  • Chargé d’Affaires ad interim, Singapore (1994)
  • Ambassador Extraordinary and Plenipotentiary, Indonesia (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (2004–2007)
• Sempronius Hamilton Boyd (1828–1894)
  • Minister Resident/Consul General, Thailand (1890–1892)
• Robert Patrick Boyle (1913–2007)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1968–1969)
• *Daniel McCoy Braddock (1906–1980)
  • Chargé d’Affaires ad interim, Cuba (1961)
• Spruille Braden (1894–1978)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1935)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1939–1942)
  • Ambassador Extraordinary and Plenipotentiary, Cuba (1941–1945)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1945)
  • Assistant Secretary of State for Western Hemisphere Affairs (1945–1947)
• *William G. Bradford (1925–2008)
  • Ambassador Extraordinary and Plenipotentiary, Chad (1976–1979)
• William O’Connell Bradley (1847–1914)
  • Minister Resident/Consul General, Korea (1889)
• *Robert Anthony Bradtke (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Croatia (2006–2009)
• Edward Stuyvesant Bragg (1827–1912)
  • Envoy Extraordinary and Minister Plenipotentiary, Mexico (1888–1889)
• Kenneth J. Braithwaite (?–)
  • Ambassador Extraordinary and Plenipotentiary, Norway (2018)
• *A. Donald Bramante (1930–2016)
  • Chargé d’Affaires ad interim, The Gambia (1990)
• Terry E. Branstad (?–)
  • Ambassador Extraordinary and Plenipotentiary, China (2017–2020)
• Stephen Brauer (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (2001–2003)
• *Charles William Bray III (1933–2006)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (1981–1985)
  • Director of the Foreign Service Institute (1987–1988)
• *Charles H. Brayshaw (1942–)
  • Chargé d’Affaires ad interim, Peru (1993)
  • Chargé d’Affaires ad interim, Mexico (1998)
• *Aurelia Erskine Brazeal (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Micronesia, Federated States of (1990–1993)
  • Ambassador Extraordinary and Plenipotentiary, Kenya (1993–1996)
  • Ambassador Extraordinary and Plenipotentiary, Ethiopia (2002–2005)
• T. Ulrich Brechbuhl (?–)
  • Counselor (2018)
• Clifton Rodes Breckinridge (1846–1932)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1894–1897)
• John Cabell Breckinridge (1821–1875)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1855)
• Kimberly Breier (?–)
  • Assistant Secretary of State for Western Hemisphere Affairs (2018)
• Andrew P. Bremberg (?–)
  • Representative of the U.S.A. to the European Office of the United Nations (Geneva) (2019)
• *Marshall Brement (1932–2009)
  • Ambassador Extraordinary and Plenipotentiary, Iceland (1981–1985)
• *L. Paul Bremer III (1941–)
  • Executive Secretary (1981–1983)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1983–1986)
  • Director of the Bureau of Counterterrorism (1986–1989)
  • Ambassador at Large (1986–1989)
• *Susan Lenore Bremner (1954–)
  • Chargé d’Affaires ad interim, Eritrea (2014)
• *Martin George Brennan (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1999–2002)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (2002–2005)
• *Peter M. Brennan (?–)
  • Chargé d’Affaires, Bolivia (2017)
• Daniel Carroll Brent (1770–1841)
  • Chief Clerk (1817–1833)
  • Secretary of State ad interim (1825)
• Thomas Ludwell Lee Brent (1784–1847)
  • Chargé d’Affaires, Portugal (1825–1834)
• William Brent Jr. (1783–1848)
  • Chargé d’Affaires, Argentina (1844–1846)
• Theodore Brentano (1854–1940)
  • Envoy Extraordinary and Minister Plenipotentiary, Hungary (1922–1927)
• *Maria E. Brewer (?–)
  • Ambassador Extraordinary and Plenipotentiary, Sierra Leone (2017)
• *William Dodd Brewer (1922–2009)
  • Ambassador Extraordinary and Plenipotentiary, Mauritius (1970–1973)
  • Ambassador Extraordinary and Plenipotentiary, Sudan (1973–1977)
• James Walter Brewster Jr. (1960–)
  • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (2013–2017)
• Kingman Brewster Jr. (1919–1988)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1977–1981)
• *Robert Charles Brewster (1921–2010)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1973–1976)
  • Inspector General of the Department of State and the Foreign Service (1979–1981)
• *Peter Scott Bridges (1932–)
  • Ambassador Extraordinary and Plenipotentiary, Somalia (1984–1986)
• *Pamela E. Bridgewater Awkward (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Benin (2000–2002)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Jamaica (2010–2013)
• George H. Bridgman (1853–1925)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (1897–1902)
• Reuben Earl Brigety II (1944–)
  • Representative of the U.S.A. to the African Union (2013–2015)
• *Ellis Ormsbee Briggs (1899–1976)
  • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (1944–1945)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1947–1949)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1949–1952)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1952–1955)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1955–1956)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1956–1959)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1959–1962)
  • Career Ambassador (1960)
  • Ambassador Extraordinary and Plenipotentiary, Spain (Not commissioned; nomination withdrawn before the Senate acted upon it.)
• *Everett Ellis Briggs (1934–)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1982–1986)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1986–1989)
  • Ambassador Extraordinary and Plenipotentiary, Portugal (1990–1993)
• *Kenneth C. Brill (1947–)
  • Chargé d’Affaires ad interim, India (1994)
  • Executive Secretary (1994–1995)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1996–1999)
  • Representative of the U.S.A. to the Vienna Office of the United Nations (Vienna) (2001–2004)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (2001–2004)
• Esther Brimmer (1961–)
  • Assistant Secretary of State for International Organization Affairs (2009–2013)
• *Bridget A. Brink (?–)
  • Ambassador Extraordinary and Plenipotentiary, Slovakia (2019)
• Nancy Goodman Brinker (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Hungary (2001–2003)
  • Chief of Protocol (2007–2009)
• Theodore Roosevelt Britton Jr. (1925–)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (1974–1977)
  • Ambassador Extraordinary and Plenipotentiary, Grenada (1974–1977)
• James Overton Broadhead (1819–1898)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1893–1895)
• Timothy M. Broas (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (2014–2016)
• William Emerson Brock III (1930–)
  • U.S. Trade Representative (1981–1985)
• Edward Everett Brodie (1876–1939)
  • Envoy Extraordinary and Minister Plenipotentiary, Thailand (1921–1925)
  • Envoy Extraordinary and Minister Plenipotentiary, Finland (1930–1933)
• *Aaron Switzer Brown (1913–1969)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (1961–1967)
• *Ben Hill Brown Jr. (1914–1989)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1964–1969)
• *David Edward Brown (1951–)
  • Chargé d’Affaires, Central African Republic (2015)
• Ethan Allen Brown (1776–1852)
  • Chargé d’Affaires, Brazil (1830–1834)
• *Gayleatha Beatrice Brown (1947–2013)
  • Ambassador Extraordinary and Plenipotentiary, Benin (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (2009)
• *Gordon S. Brown (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Mauritania (1991–1994)
• James Brown (1766–1835)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1823–1829)
• Keith Lapham Brown (1925–)
  • Ambassador Extraordinary and Plenipotentiary, Lesotho (1982–1983)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1988–1992)
• *Kenneth Lee Brown (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Congo (Brazzaville) (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Côte d’Ivoire (1989–1992)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1992–1995)
• *Kent N. Brown (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Georgia (1992–1995)
• *Laurence G. Brown (1953–)
  • Director of the Office of Medical Services (2003–2008)
• *Lewis Dean Brown (1920–2001)
  • Ambassador Extraordinary and Plenipotentiary, The Gambia (1967–1970)
  • Ambassador Extraordinary and Plenipotentiary, Senegal (1967–1970)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1970–1973)
  • Deputy Under Secretary of State for Management (1973–1975)
• Lyons Brown Jr. (1936–)
  • Ambassador Extraordinary and Plenipotentiary, Austria (2001–2005)
• *Natalie E. Brown (?–)
  • Chargé d’Affaires, Eritrea (2019)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (2020)
• Neill Smith Brown (1810–1886)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1850–1853)
• Philip Marshall Brown (1875–1966)
  • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1908–1910)
• *Richard C. Brown (1939–2004)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1990–1993)
• *Robert Lyle Brown (1920–)
  • Inspector General of the Department of State and the Foreign Service (1981–1983)
• Scott P. Brown (?–)
  • Ambassador Extraordinary and Plenipotentiary, Samoa (2017)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (2017)
• *Sue Katherine Brown (1948–)
  • Ambassador Extraordinary and Plenipotentiary, Montenegro (2011–2015)
• *William Andreas Brown (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (1985–1988)
  • Ambassador Extraordinary and Plenipotentiary, Israel (1988–1992)
• *Winthrop Gilman Brown (1907–1987)
  • Ambassador Extraordinary and Plenipotentiary, Laos (1960–1962)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1964–1967)
  • Career Ambassador (1969)
• Samuel Dale Brownback (1956–)
  • Ambassador at Large (2018)
• H. Monroe Browne (1917–2006)
  • Ambassador Extraordinary and Plenipotentiary, Samoa (1981–1985)
  • Ambassador Extraordinary and Plenipotentiary, New Zealand (1981–1985)
• John Ross Browne (1817–1875)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1868–1869)
• *William R. Brownfield (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Chile (2002–2004)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (2004–2007)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (2007–2010)
  • Assistant Secretary of State for International Narcotics and Law Enforcement Affairs (2011–2017)
  • Career Ambassador (2012)
• *Steven A. Browning (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (2003–2004)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (2005–2009)
• *David Brownstein (?–)
  • Chargé d’Affaires ad interim, Central African Republic (2019)
• William H. Brubeck (1920–)
  • Executive Secretary (1962–1963)
• David Kirkpatrick Este Bruce (1898–1977)
  • Ambassador Extraordinary and Plenipotentiary, France (1949–1952)
  • Under Secretary of State (1952–1953)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1957–1959)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1961–1969)
  • Chief, China (1973–1974)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1974–1976)
• James Bruce (1892–1980)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1947–1949)
• *Katherine A. Brucker (?–)
  • Chargé d’Affaires ad interim, Côte d’Ivoire ()
• George Charles Bruno (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Belize (1994–1997)
• *Jennifer Leigh Brush (1956–)
  • Chargé d’Affaires ad interim, Turkmenistan (2007)
• Charles Page Bryan (1856–1918)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1897)
  • Envoy Extraordinary and Minister Plenipotentiary, Brazil (1898–1902)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1902)
  • Envoy Extraordinary and Minister Plenipotentiary, Switzerland (1902)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1903–1910)
  • Envoy Extraordinary and Minister Plenipotentiary, Belgium (1909–1911)
  • Ambassador Extraordinary and Plenipotentiary, Japan (1911–1912)
• John Alexander Bryan (?–)
  • Chargé d’Affaires, Peru (1844–1845)
• William Jennings Bryan (1860–1925)
  • Secretary of State (1913–1915)
• Lloyd Stephens Bryce (1850–1917)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1911–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1911–1913)
• *Edward P. Brynn (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (1990–1993)
  • Ambassador Extraordinary and Plenipotentiary, Ghana (1995–1998)
• *Matthew J. Bryza (1964–)
  • Ambassador Extraordinary and Plenipotentiary, Azerbaijan (2010–2012)
  • Ambassador Extraordinary and Plenipotentiary, Azerbaijan (Nomination of January 26, 2012, withdrawn on April 26, 2012.)
• Mark Francis Brzezinski (1965–)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (2011–2015)
• Richard D. Buchan III (?–)
  • Ambassador Extraordinary and Plenipotentiary, Andorra (2017)
  • Ambassador Extraordinary and Plenipotentiary, Spain (2017)
• James Buchanan (1791–1868)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1832–1833)
  • Secretary of State (1845–1849)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1853–1856)
• James M. Buchanan (1803–1876)
  • Minister Resident, Denmark (1858–1861)
• Wiley Thomas Buchanan Jr. (1914–1986)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1953–1956)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (1956)
  • Chief of Protocol (1957–1961)
  • Ambassador Extraordinary and Plenipotentiary, Austria (1975–1977)
• William Insco Buchanan (1853–1909)
  • Envoy Extraordinary and Minister Plenipotentiary, Argentina (1894–1899)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1903–1904)
• Alfred Eliab Buck (1832–1902)
  • Envoy Extraordinary and Minister Plenipotentiary, Japan (1897–1902)
• Charles William Buck (1849–1930)
  • Envoy Extraordinary and Minister Plenipotentiary, Peru (1885–1889)
• Charles Rollin Buckalew (1821–1899)
  • Minister Resident, Ecuador (1858–1861)
• James Lane Buckley (1923–)
  • Under Secretary of State for Arms Control and International Security Affairs (1981–1982)
  • Counselor (1982)
• George Washington Buckner (1855–1943)
  • Minister Resident/Consul General, Liberia (1913–1915)
• *William Burnside Buffum (1921–2012)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (1970–1974)
  • Assistant Secretary of State for International Organization Affairs (1973–1975)
• Brian J. Bulatao (?–)
  • Under Secretary of State for Management (2019)
• *Roland Wentworth Bullen (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Guyana (2003–2006)
• *James Richard Bullington (1940–)
  • Chargé d’Affaires ad interim, Benin (1982)
  • Ambassador Extraordinary and Plenipotentiary, Burundi (1983–1986)
• William Christian Bullitt (1891–1967)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1933–1936)
  • Ambassador Extraordinary and Plenipotentiary, France (1936–1940)
• Harvey Hollister Bundy (1888–1963)
  • Assistant Secretary of State (1931–1933)
• William Putnam Bundy (1917–2000)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1964–1969)
• Ellsworth Bunker (1894–1984)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1951–1952)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1952–1953)
  • Ambassador Extraordinary and Plenipotentiary, India (1956–1961)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (1956–1959)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (1964–1966)
  • Ambassador at Large (1966–1967)
  • Ambassador Extraordinary and Plenipotentiary, South Vietnam (1967–1973)
  • Ambassador at Large (1973–1978)
• William Armistead Moale Burden (1906–1984)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1959–1961)
• *William Carter Burdett (1884–1944)
  • Envoy Extraordinary and Minister Plenipotentiary, New Zealand (1943–1944)
• *William Carter Burdett Jr. (1918–1995)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (1970–1974)
• Carter Lane Burgess (1916–2002)
  • Ambassador Extraordinary and Plenipotentiary, Argentina (1968–1969)
• Warren Randolph Burgess (1889–1978)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1957–1961)
• *Raymond F. Burghardt Jr. (1945–)
  • Ambassador Extraordinary and Plenipotentiary, Vietnam (2001–2004)
• *John Richard Burke (1924–1993)
  • Ambassador Extraordinary and Plenipotentiary, Guyana (1977–1979)
• *Albert Peter Burleigh (1942–)
  • Director of the Bureau of Counterterrorism (1991–1992)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1995–1997)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1995–1997)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (Nomination of May 26, 1999, not acted upon by the Senate.)
  • Ambassador Extraordinary and Plenipotentiary, Palau (Nomination of May 26, 1999, not acted upon by the Senate.)
• Anson Burlingame (1820–1870)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1861–1867)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (1861)
• Christopher Bancroft Burnham (1956–)
  • Assistant Secretary of State for Resource Management (2002–2005)
• Arthur Frank Burns (1904–1987)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1981–1985)
• *Findley Burns Jr. (1917–2003)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1966–1967)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1970–1973)
• *John Howard Burns (1913–2017)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1961–1963)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1965–1969)
  • Director General of the Foreign Service (1969–1971)
• Norman Burns (1905–1994)
  • Director of the Foreign Service Institute (1952–1953)
• *R. Nicholas Burns (1956–)
  • Ambassador Extraordinary and Plenipotentiary, Greece (1997–2001)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (2001–2005)
  • Under Secretary of State for Political Affairs (2005–2008)
• William F. Burns (1932–)
  • Director of the U.S. Arms Control and Disarmament Agency (1988–1989)
• *William Joseph Burns (1956–)
  • Executive Secretary (1996–1998)
  • Ambassador Extraordinary and Plenipotentiary, Jordan (1998–2001)
  • Assistant Secretary of State for Near Eastern Affairs (2001–2005)
  • Ambassador Extraordinary and Plenipotentiary, Russia (2005–2008)
  • Under Secretary of State for Political Affairs (2008–2011)
  • Career Ambassador (2008)
  • Deputy Secretary of State (2011–2014)
• John Andrew Burroughs Jr. (1936–2014)
  • Ambassador Extraordinary and Plenipotentiary, Malawi (1981–1984)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1988–1991)
• *Charles Robert Burrows (1910–1986)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1960–1965)
• *Herbert S. Bursley (1896–1961)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1947–1950)
• Richard R. Burt (1947–)
  • Assistant Secretary of State for Politico-Military Affairs (1981–1982)
  • Assistant Secretary of State for European and Eurasian Affairs (1983–1985)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1985–1989)
  • Ambassador Extraordinary and Plenipotentiary to the U.S. Office for Arms Reduction Negotiations (Geneva) (1989–1991)
• Allan A. Burton (1820–1878)
  • Minister Resident, Colombia (1861–1866)
  • Minister Resident, Colombia (1861)
• Morris Dempson Busby (1938–)
  • Director of the Bureau of Counterterrorism (1989–1991)
  • Ambassador Extraordinary and Plenipotentiary, Colombia (1991–1994)
• Dwight Lamar Bush Sr. (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (2014–2017)
• Frederick Morris Bush (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (Nomination returned after the August 1989 recess, and not resubmitted.)
• George Herbert Walker Bush (1924–2018)
  • Representative of the U.S.A. to the United Nations (1971–1973)
  • Chief, China (1974–1975)
• *Prudence Bushnell (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Kenya (1996–1999)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1999–2002)
• *Duane Clemens Butcher (1965–)
  • Chargé d’Affaires ad interim, Romania (2014)
• *Patricia A. Butenis (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (2006–2007)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (2009–2012)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (2009–2012)
• Anthony Butler (?–)
  • Chargé d’Affaires, Mexico (1829–1835)
• Charles Frederick Butler (1933–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1969–1971)
• George H. Butler (?–1886)
  • Agent/Consul General, Egypt (1870–1872)
• *George Howland Butler (1894–1967)
  • Ambassador Extraordinary and Plenipotentiary, Dominican Republic (1946–1948)
• *Lawrence E. Butler (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Macedonia (2002–2005)
• Robert Butler (1897–1955)
  • Ambassador Extraordinary and Plenipotentiary, Australia (1946–1948)
  • Ambassador Extraordinary and Plenipotentiary, Cuba (1948–1951)
• *Richard Porter Butrick (1894–1997)
  • Envoy Extraordinary and Minister Plenipotentiary, Iceland (1948–1949)
  • Director General of the Foreign Service (1949–1952)
• *William Walton Butterworth (1903–1975)
  • Assistant Secretary of State for East Asian and Pacific Affairs (1949–1950)
  • Ambassador Extraordinary and Plenipotentiary, Sweden (1950–1953)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (1961–1962)
  • Ambassador Extraordinary and Plenipotentiary, Canada (1962–1968)
  • Career Ambassador (1962)
• Cassandra Quin Butts (1965–2016)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (Nomination of February 10, 2014, not acted upon by the Senate. Re-nominated February 5, 2015. Died before the Senate confirmed her nomination.)
• *Homer Morrison Byington Jr. (1908–1987)
  • Ambassador Extraordinary and Plenipotentiary, Malaysia (1957–1961)
• *Patricia Mary Byrne (1925–2007)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1976–1979)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1979–1983)
• *Thomas Ryan Byrne (1923–2014)
  • Ambassador Extraordinary and Plenipotentiary, Norway (1973–1976)
  • Ambassador Extraordinary and Plenipotentiary, Czechoslovakia (1976–1978)
• James Francis Byrnes (1882–1972)
  • Secretary of State (1945–1947)
• *Kate M. Byrnes (?–)
  • Ambassador Extraordinary and Plenipotentiary, Macedonia (2019)
• *Paul J. Byrnes (1926–)
  • Chargé d’Affaires ad interim, Antigua and Barbuda ()
• *Henry Alfred Byroade (1913–1993)
  • Director of the Bureau of German Affairs (1950–1952)
  • Assistant Secretary of State for Near Eastern Affairs (1952–1955)
  • Ambassador Extraordinary and Plenipotentiary, Egypt (1955–1956)
  • Ambassador Extraordinary and Plenipotentiary, South Africa (1956–1959)
  • Ambassador Extraordinary and Plenipotentiary, Afghanistan (1959–1962)
  • Ambassador Extraordinary and Plenipotentiary, Burma (1963–1968)
  • Ambassador Extraordinary and Plenipotentiary, Philippines (1969–1973)
  • Ambassador Extraordinary and Plenipotentiary, Pakistan (1973–1977)