Principal Officers and Chiefs of Mission, by Name: D

Note: Career Foreign Service appointees are asterisked.

• Ivo H. Daalder (1960–)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (2009–2013)
• Rollin Mallory Daggett (1831–1901)
  • Minister Resident, Hawaii (1882–1885)
• *John J. Daigle (?–)
  • Ambassador Extraordinary and Plenipotentiary, Cape Verde (2019)
• Dell L. Dailey (1949–)
  • Director of the Bureau of Counterterrorism (2007–2009)
  • Ambassador at Large (2007–2009)
• Peter H. Dailey (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Ireland (1982–1984)
• Francis Lykins Dale (1921–1993)
  • Representative of the U.S.A. to the European Office of the United Nations (Geneva) (1973–1976)
• *Martin Dale (?–)
  • Chargé d’Affaires ad interim, Somalia (2018)
• *William Norris Dale (1919–2014)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1973–1975)
• James A. Daley (1941–)
  • Ambassador Extraordinary and Plenipotentiary, Dominica (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Antigua and Barbuda (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Grenada (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Saint Vincent and the Grenadines (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Saint Lucia (2000–2001)
  • Ambassador Extraordinary and Plenipotentiary, Saint Kitts and Nevis (2000–2001)
• *Thomas Edward Daley (?–)
  • Chargé d’Affaires ad interim, Palau (2015)
• George Mifflin Dallas (1792–1864)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1837–1839)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1856–1861)
• Kenneth W. Dam (1932–)
  • Deputy Secretary of State (1982–1985)
• *William H. Dameron III (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Mali (1993–1995)
• Francis Dana (1743–1811)
  • Minister, Russia (1780)
• John Winchester Dana (1808–1867)
  • Chargé d’Affaires, Bolivia (1853–1854)
  • Minister Resident, Bolivia (1854–1859)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (Nominated on February 25, 1856; nomination withdrawn before the Senate acted upon it.)
• Richard Henry Dana Jr. (1815–1882)
  • Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (Not commissioned; nomination rejected by the Senate.)
• John Claggett Danforth (1936–)
  • Representative of the U.S.A. to the United Nations (2004–2005)
• John Moncure Daniel (1825–1865)
  • Chargé d’Affaires, Italy (1853–1854)
  • Minister Resident, Italy (1854–1861)
  • Envoy Extraordinary and Minister Plenipotentiary, Italy (Nomination of February 25, 1856, withdrawn before the Senate acted upon it.)
• Josephus Daniels Jr. (1862–1948)
  • Ambassador Extraordinary and Plenipotentiary, Mexico (1933–1941)
• *Paul Clement Daniels (1903–1986)
  • Ambassador Extraordinary and Plenipotentiary, Honduras (1947)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (1948–1951)
  • Ambassador Extraordinary and Plenipotentiary, Ecuador (1951–1953)
• *Joel Danies (?–)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (2018–2019)
  • Ambassador Extraordinary and Plenipotentiary, Sao Tome and Principe (2018–2019)
• John J. Danilovich (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (2004–2005)
• Charles Francis Darlington (1904–1986)
  • Ambassador Extraordinary and Plenipotentiary, Gabon (1961–1964)
• *Thomas Frederick Daughton (1961–)
  • Chargé d’Affaires ad interim, Gabon (2002)
  • Chargé d’Affaires ad interim, Sao Tome and Principe (2002)
  • Ambassador Extraordinary and Plenipotentiary, Namibia (2014–2017)
• Auguste Genevieve Valentin Davezac (D’Avezac) (1780–1851)
  • Chargé d’Affaires, Netherlands (1831–1839)
  • Chargé d’Affaires, Netherlands (1845–1850)
• Nelson Binkley David (1906–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1957–1968)
• *Jeffrey S. Davidow (1944–)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (1988–1990)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1993–1996)
  • Assistant Secretary of State for Western Hemisphere Affairs (1996–1998)
  • Ambassador Extraordinary and Plenipotentiary, Mexico (1998–2002)
  • Career Ambassador (2002)
• *Glyn T. Davies (1957–)
  • Representative of the U.S.A. to the Vienna Office of the United Nations (Vienna) (2009–2011)
  • Representative of the U.S.A. to the International Atomic Energy Agency (Vienna) (2009–2011)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (2015–2018)
• Joseph Edward Davies (1876–1958)
  • Ambassador Extraordinary and Plenipotentiary, Russia (1936–1938)
  • Ambassador Extraordinary and Plenipotentiary, Belgium (1938–1939)
  • Envoy Extraordinary and Minister Plenipotentiary, Luxembourg (1938–1939)
• *Richard Townsend Davies (1920–2005)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1972–1978)
• *Rodger Paul Davies (1921–1974)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (1974)
• *Allen Clayton Davis (1927–)
  • Ambassador Extraordinary and Plenipotentiary, Guinea (1980–1983)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1983–1985)
• Arthur H. Davis Jr. (1917–2000)
  • Ambassador Extraordinary and Plenipotentiary, Paraguay (1982–1985)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1986–1990)
• John Davis (1851–1902)
  • Assistant Secretary of State (1882–1885)
• John Chandler Bancroft Davis (1822–1907)
  • Assistant Secretary of State (1869–1871)
  • Assistant Secretary of State (1873–1874)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1874–1877)
  • Assistant Secretary of State (1881–1882)
• *John Roger Davis Jr. (1927–)
  • Chargé d’Affaires ad interim, Poland (1987)
  • Chargé d’Affaires, Poland (1988)
  • Ambassador Extraordinary and Plenipotentiary, Poland (1988–1990)
  • Ambassador Extraordinary and Plenipotentiary, Romania (1991–1994)
• John Wesley Davis (1799–1859)
  • Commissioner, China (1848–1850)
• John William Davis (1873–1955)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1918–1921)
• Lynn Etheridge Davis (1943–)
  • Under Secretary of State for Arms Control and International Security Affairs (1993–1997)
• *Monnett Bain Davis (1893–1953)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (1945–1946)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1948–1951)
  • Ambassador Extraordinary and Plenipotentiary, Israel (1951–1953)
• *Nathaniel Davis (1925–2011)
  • Envoy Extraordinary and Minister Plenipotentiary, Bulgaria (1965–1966)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (1968–1971)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1971–1973)
  • Director General of the Foreign Service (1973–1975)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (1975–1977)
  • Assistant Secretary of State for African Affairs (1975)
• *Nathaniel Penistone Davis (1895–1973)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (1947–1949)
  • Envoy Extraordinary and Minister Plenipotentiary, Hungary (1949–1951)
• Norman Hezekiah Davis (1878–1944)
  • Under Secretary of State (1920–1921)
• *Richard Hallock Davis (1913–1972)
  • Ambassador Extraordinary and Plenipotentiary, Romania (1965–1969)
• Roy Tasco Davis (1889–1975)
  • Envoy Extraordinary and Minister Plenipotentiary, Guatemala (1921)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1922–1930)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1929–1933)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (1953–1957)
• *Ruth A. Davis (1942–)
  • Ambassador Extraordinary and Plenipotentiary, Benin (1992–1995)
  • Director of the Foreign Service Institute (1997–2000)
  • Director General of the Foreign Service (2001–2003)
  • Career Ambassador (2002)
• Shelby Cullom Davis (1909–1994)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (1969–1975)
• William True Davis Jr. (1919–2003)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (1963–1965)
• *John S. Davison (1933–2009)
  • Chargé d’Affaires ad interim, Benin (1980)
  • Ambassador Extraordinary and Plenipotentiary, Niger (1993–1996)
• Charles Gates Dawes (1865–1951)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1929–1931)
• *Horace Greeley Dawson Jr. (1926–)
  • Ambassador Extraordinary and Plenipotentiary, Botswana (1979–1982)
• John Littleton Dawson (1813–1870)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (Not commissioned; nomination rejected by the Senate.)
• *John R. Dawson (1950–2003)
  • Ambassador Extraordinary and Plenipotentiary, Peru (2002–2003)
• Thomas Cleland Dawson (1865–1912)
  • Minister Resident/Consul General, Dominican Republic (1904–1907)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1907–1909)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (1909)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1910)
• *William Dawson Jr. (1885–1972)
  • Envoy Extraordinary and Minister Plenipotentiary, Ecuador (1930–1935)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1934–1937)
  • Envoy Extraordinary and Minister Plenipotentiary, Uruguay (1937–1939)
  • Envoy Extraordinary and Minister Plenipotentiary, Uruguay (1937)
  • Ambassador Extraordinary and Plenipotentiary, Panama (1939–1941)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1941–1946)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (1948)
• Sharon Day (?–)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (2017)
• William Rufus Day (1849–1923)
  • Assistant Secretary of State (1897–1898)
  • Secretary of State (1898)
• Aaron Ogden Dayton (1796–1858)
  • Chief Clerk (1836–1838)
• William Lewis Dayton (1807–1864)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1861–1864)
• William Lewis Dayton Jr. (1839–1897)
  • Minister Resident, Netherlands (1882–1885)
• Luis C. de Baca (1967–)
  • Ambassador at Large (2009–2014)
• *Jeffrey De Laurentis (1954–)
  • Principal Officer, Cuba (2015)
  • Chargé d’Affaires, Cuba (2017)
• Edwin De Leon (1818–1891)
  • Agent/Consul General, Egypt (1853–1861)
• Charles E. De Long (1832–1876)
  • Minister Resident, Japan (1869–1872)
  • Envoy Extraordinary and Minister Plenipotentiary, Japan (1870–1873)
• *Samuel De Palma (1918–2002)
  • Assistant Secretary of State for International Organization Affairs (1969–1973)
• *Willard Ames De Pree (1928–)
  • Ambassador Extraordinary and Plenipotentiary, Mozambique (1976–1980)
  • Director of the Office of Management Policy (1983–1987)
  • Ambassador Extraordinary and Plenipotentiary, Bangladesh (1987–1990)
• Vincent William de Roulet (1925–1975)
  • Ambassador Extraordinary and Plenipotentiary, Jamaica (1969–1973)
• John Longer de Saulles (1879–1917)
  • Envoy Extraordinary and Minister Plenipotentiary, Uruguay (1914)
• Paula A. De Sutter (1958–)
  • Assistant Secretary of State for Arms Control, Verification, and Compliance (2002–2009)
• *Peter John De Vos (1938–2008)
  • Ambassador Extraordinary and Plenipotentiary, Cape Verde (1980–1983)
  • Ambassador Extraordinary and Plenipotentiary, Guinea-Bissau (1980–1983)
  • Ambassador Extraordinary and Plenipotentiary, Mozambique (1983–1987)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1990–1992)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1992–1994)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (1994–1997)
• Charles Gerrit De Witt (1789–1839)
  • Chargé d’Affaires, Guatemala (1833–1839)
• *John Gunther Dean (1926–)
  • Ambassador Extraordinary and Plenipotentiary, Cambodia (1974–1975)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1975–1978)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (1978–1981)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (1981–1985)
  • Ambassador Extraordinary and Plenipotentiary, India (1985–1988)
  • Chargé d’Affaires ad interim, Mali ()
• *Robert William Dean (1920–2014)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1974–1977)
• *Henry Mark Valpey Dearborn (1913–2013)
  • Chargé d’Affaires ad interim, Dominican Republic (1960)
• Henry Dearborn Sr. (1751–1829)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1822–1824)
• *Fred Morris Dearing (1879–1963)
  • Assistant Secretary of State (1921–1922)
  • Envoy Extraordinary and Minister Plenipotentiary, Portugal (1922–1930)
  • Ambassador Extraordinary and Plenipotentiary, Peru (1930–1937)
  • Envoy Extraordinary and Minister Plenipotentiary, Sweden (1937–1938)
• *William E. DeCourcy (1894–1981)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (1948–1950)
• *Kelly C. Degnan (?–)
  • Ambassador Extraordinary and Plenipotentiary, Georgia (2019)
• *Edmund T. DeJarnette (1938–2015)
  • Ambassador Extraordinary and Plenipotentiary, Central African Republic (1983–1986)
  • Ambassador Extraordinary and Plenipotentiary, Tanzania (1989–1992)
  • Director, Angola (1994)
  • Ambassador Extraordinary and Plenipotentiary, Angola (1994–1995)
• *Gregory T. Delawie (1957–)
  • Ambassador Extraordinary and Plenipotentiary, Kosovo (2015–2018)
• *Scott H. DeLisi (1953–)
  • Ambassador Extraordinary and Plenipotentiary, Eritrea (2004–2007)
  • Ambassador Extraordinary and Plenipotentiary, Nepal (2010–2012)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (2012–2015)
• *Christopher William Dell (1956–)
  • Ambassador Extraordinary and Plenipotentiary, Angola (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Zimbabwe (2004–2007)
  • Ambassador Extraordinary and Plenipotentiary, Kosovo (2009–2012)
• *Olcott Hawthorne Deming (1909–2007)
  • Ambassador Extraordinary and Plenipotentiary, Uganda (1963–1966)
  • Chargé d’Affaires ad interim, Uganda ()
• *Rust Macpherson Deming (1941–)
  • Ambassador Extraordinary and Plenipotentiary, Tunisia (2000–2003)
• Charles Denby (1830–1904)
  • Envoy Extraordinary and Minister Plenipotentiary, China (1885–1898)
• Joseph M. Denning (1866–1927)
  • Agent/Consul General, Morocco (1922–1924)
• Patricia Diaz Dennis (1946–)
  • Assistant Secretary of State for Democracy, Human Rights, and Labor (1992–1993)
• Frederick Baily Dent (1922–)
  • U.S. Trade Representative (1975–1977)
• Lewis (Louis) Dent (1822–1874)
  • Envoy Extraordinary and Minister Plenipotentiary, Chile (Not commissioned; nomination not confirmed by Senate.)
• Chauncey Mitchell Depew (1834–1928)
  • Minister Resident, Japan (1865)
• *James Michael Derham (1947–)
  • Ambassador Extraordinary and Plenipotentiary, Guatemala (2005–2008)
  • Chargé d’Affaires, Venezuela (2013)
• Patricia Murphy Derian (1929–2016)
  • Assistant Secretary of State for Democracy, Human Rights, and Labor (1977–1981)
• William S. Derrick (?–1852)
  • Chief Clerk (1843–1844)
  • Secretary of State ad interim (1843)
  • Chief Clerk (1845)
  • Chief Clerk (1847–1848)
  • Chief Clerk (1848–1852)
• *Anne E. Derse (1954–)
  • Ambassador Extraordinary and Plenipotentiary, Azerbaijan (2006–2009)
  • Ambassador Extraordinary and Plenipotentiary, Lithuania (2009–2012)
• Edward J. Derwinski (1926–2012)
  • Counselor (1983–1987)
  • Under Secretary of State for Arms Control and International Security Affairs (1987–1989)
• Fay Allen Des Portes (1890–1944)
  • Envoy Extraordinary and Minister Plenipotentiary, Bolivia (1933–1936)
  • Envoy Extraordinary and Minister Plenipotentiary, Guatemala (1936–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Costa Rica (1943–1944)
• Michael G. DeSombre (?–)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (2020)
• *John P. Desrocher (?–)
  • Ambassador Extraordinary and Plenipotentiary, Algeria (2017–2020)
• Robert A. Destro (?–)
  • Assistant Secretary of State for Democracy, Human Rights, and Labor (2019)
• *Joseph Michael DeThomas (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Estonia (2001–2004)
• *Frank James Devine (1922–2012)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (1977–1980)
• Arthur E. Dewey (1933–)
  • Assistant Secretary of State for Population, Refugees, and Migration Affairs (2002–2005)
• *Katherine Simmons Dhanani (1958–)
  • Ambassador Extraordinary and Plenipotentiary, Somalia (Nomination of February 25, 2015, withdrawn May 11, 2015.)
• Miguel Humberto Diaz (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Holy See (2009–2012)
• Dominic L. DiCarlo (1928–1999)
  • Assistant Secretary of State for International Narcotics and Law Enforcement Affairs (1981–1984)
• Ernest (Ernst Dichmann) Dichman (?–1885)
  • Minister Resident, Colombia (1878–1881)
• Mahlon Dickerson (1770–1853)
  • Envoy Extraordinary and Minister Plenipotentiary, Russia (1834)
• Asbury Dickins (1773–1861)
  • Chief Clerk (1833–1836)
• Andrew B. Dickinson (1801–1873)
  • Minister Resident, Nicaragua (1861–1863)
  • Minister Resident and Extraordinary, Nicaragua (1863–1869)
• Charles Monroe Dickinson (1842–1924)
  • Agent, Bulgaria (1901–1903)
• *Dwight Dickinson III (1916–1997)
  • Ambassador Extraordinary and Plenipotentiary, Togo (1970–1974)
• *Francois Moussiegt Dickman (1924–2015)
  • Ambassador Extraordinary and Plenipotentiary, United Arab Emirates (1976–1979)
  • Ambassador Extraordinary and Plenipotentiary, Kuwait (1979–1983)
• Gerrit John Diekema (1859–1930)
  • Envoy Extraordinary and Minister Plenipotentiary, Netherlands (1929–1930)
• Robert J. Dieter (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Belize (2005–2009)
• *Carl Edward Dillery (1930–)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Kiribati (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (1984–1987)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (1984–1987)
• Betty Rose (Crites) Dillon (1923–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1971–1977)
• Clarence Douglas Dillon (1909–2003)
  • Ambassador Extraordinary and Plenipotentiary, France (1953–1957)
  • Deputy Under Secretary of State for Economic Affairs (1957–1958)
  • Under Secretary for Economic Growth, Energy, and the Environment (1958–1959)
  • Under Secretary of State (1959–1961)
• *Robert Sherwood Dillon (1929–)
  • Ambassador Extraordinary and Plenipotentiary, Lebanon (1981–1983)
• Alexander Dimitry (1805–1883)
  • Minister Resident, Costa Rica (1859–1861)
  • Minister Resident, Nicaragua (1859–1861)
• *John R. Dinger (1952–)
  • Ambassador Extraordinary and Plenipotentiary, Mongolia (2000–2003)
• *Larry Miles Dinger (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Micronesia, Federated States of (2001–2004)
  • Ambassador Extraordinary and Plenipotentiary, Fiji (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Kiribati (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Tonga (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Nauru (2005–2008)
  • Ambassador Extraordinary and Plenipotentiary, Tuvalu (2005–2008)
  • Chargé d’Affaires, Burma (2011)
• *John Walter Dinkelman (1961–)
  • Chargé d’Affaires ad interim, The Bahamas (2014)
• Hugh Anderson Dinsmore (1850–1930)
  • Minister Resident/Consul General, Korea (1887–1890)
• *Lee Fries Dinsmore (1916–)
  • Chargé d’Affaires ad interim, Yemen (1967)
• *Margaret Brumfield Diop (1960–)
  • Chargé d’Affaires ad interim, Trinidad and Tobago (2016)
• John Adams Dix (1798–1879)
  • Minister Resident, Netherlands (1866)
  • Envoy Extraordinary and Minister Plenipotentiary, France (1866–1869)
• *Edward Peter Djerejian (1939–)
  • Ambassador Extraordinary and Plenipotentiary, Syria (1988–1991)
  • Assistant Secretary of State for Near Eastern Affairs (1991–1993)
  • Ambassador Extraordinary and Plenipotentiary, Israel (1993–1994)
• *James F. Dobbins (1942–)
  • Representative of the U.S.A. to the European Union, with the rank and status of Ambassador Extraordinary and Plenipotentiary (1991–1993)
  • Assistant Secretary of State for European and Eurasian Affairs (2000)
• Edith Huntington Jones Dobelle (1944–)
  • Chief of Protocol (1978–1979)
• Evan Samuel Dobelle (1945–)
  • Chief of Protocol (1977–1978)
• Lev E. Dobriansky (1918–2008)
  • Ambassador Extraordinary and Plenipotentiary, The Bahamas (1982–1986)
• Paula J. Dobriansky (1955–)
  • Under Secretary of State for Civilian Security, Democracy, and Human Rights (2001–2009)
• Thomas J. Dodd (1935–)
  • Ambassador Extraordinary and Plenipotentiary, Uruguay (1993–1997)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (1997–2001)
• William Edward Dodd (1869–1940)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1933–1937)
• Augustus Caesar Dodge (1812–1883)
  • Envoy Extraordinary and Minister Plenipotentiary, Spain (1855–1859)
• Henry Percival Dodge (1870–1936)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1907–1909)
  • Envoy Extraordinary and Minister Plenipotentiary, Honduras (1907–1909)
  • Envoy Extraordinary and Minister Plenipotentiary, El Salvador (1908)
  • Envoy Extraordinary and Minister Plenipotentiary, Morocco (1909–1910)
  • Envoy Extraordinary and Minister Plenipotentiary, Panama (1911–1913)
  • Envoy Extraordinary and Minister Plenipotentiary, Yugoslavia (1919–1926)
  • Envoy Extraordinary and Minister Plenipotentiary, Denmark (1926–1930)
• *Michael J. Dodman (?–)
  • Ambassador Extraordinary and Plenipotentiary, Mauritania (2017)
• *Laura Farnsworth Dogu (1964–)
  • Ambassador Extraordinary and Plenipotentiary, Nicaragua (2015–2018)
• *Kathleen Ann Doherty (1963–)
  • Ambassador Extraordinary and Plenipotentiary, Cyprus (2015–2019)
• William Charles Doherty (1902–1987)
  • Ambassador Extraordinary and Plenipotentiary, Jamaica (1962–1964)
• *George Dolgin (1911–)
  • Chargé d’Affaires ad interim, Barbados ()
• John Ernest Dolibois (1918–2014)
  • Ambassador Extraordinary and Plenipotentiary, Luxembourg (1981–1985)
• Peter Hoyt Dominick (1915–1981)
  • Ambassador Extraordinary and Plenipotentiary, Switzerland (1975)
• *Richard Hempstead Donald (1922–)
  • Chargé d’Affaires ad interim, Singapore ()
• William Henry Donaldson (1931–)
  • Under Secretary of State for Arms Control and International Security Affairs (1973–1974)
• *Joseph Francis Donelan Jr. (1918–1999)
  • Assistant Secretary of State for Administration (1971–1973)
• Andrew Jackson Donelson (1799–1871)
  • Chargé d’Affaires, Texas (1844–1845)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1846–1849)
  • Envoy Extraordinary and Minister Plenipotentiary, Germany (1848–1849)
• Thomas E. Donilon (1955–)
  • Assistant Secretary of State for Public Affairs (1993–1996)
• Dixon Donnelley (1915–1982)
  • Assistant Secretary of State for Public Affairs (1966–1969)
• Brian J. Donnelly (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Trinidad and Tobago (1994–1997)
• *Shaun Edward Donnelly (1946–)
  • Ambassador Extraordinary and Plenipotentiary, Maldives (1997–2000)
  • Ambassador Extraordinary and Plenipotentiary, Sri Lanka (1997–2000)
• *Walter Joseph Donnelly (1896–1970)
  • Ambassador Extraordinary and Plenipotentiary, Costa Rica (1947)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (1947–1950)
  • Envoy Extraordinary and Minister Plenipotentiary, Austria (1950–1951)
  • Ambassador Extraordinary and Plenipotentiary, Austria (1951–1952)
• *Eileen Roberta Donovan (1915–1996)
  • Ambassador Extraordinary and Plenipotentiary, Barbados (1969–1974)
• *Joseph R. Donovan Jr. (?–)
  • Ambassador Extraordinary and Plenipotentiary, Indonesia (2016–2020)
• *William Joseph Donovan (1883–1959)
  • Ambassador Extraordinary and Plenipotentiary, Thailand (1953–1954)
• Sean E. Doocey (?–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (2020)
• K. Terry Dornbush (1933–)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1994–1998)
• Diana Lady Dougan (1943–)
  • Coordinator for International Communications and Information Policy (1984–1988)
• *J. Thomas Dougherty (1951–)
  • Ambassador Extraordinary and Plenipotentiary, Burkina Faso (2010–2013)
• Howard Eugene Douglas (1940–)
  • Ambassador at Large (1982–1986)
• Lewis Williams Douglas (1894–1974)
  • Ambassador Extraordinary and Plenipotentiary, United Kingdom (1947–1950)
• Frederick Augustus Washington Bailey Douglass (1818–1895)
  • Chargé d’Affaires, Dominican Republic (1889–1891)
  • Minister Resident/Consul General, Haiti (1889–1891)
• *Walter Cecil Dowling (1905–1977)
  • Ambassador Extraordinary and Plenipotentiary, Korea (1956–1959)
  • Ambassador Extraordinary and Plenipotentiary, Germany (1959–1963)
  • Assistant Secretary of State for European and Eurasian Affairs (1959)
  • Career Ambassador (1962)
• John Edward Downs (1917–)
  • Representative of the U.S.A. on the Council of the International Civil Aviation Organization (Montreal) (1977–1982)
• William Franklin Draper (1842–1910)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1897–1900)
• William Henry Draper Jr. (1894–1974)
  • U.S. Permanent Representative on the Council of the North Atlantic Treaty Organization (1953)
• John Caspar Dreier (1906–1994)
  • Permanent Representative of the U.S.A. to the Organization of American States (Washington) (1950–1960)
• Ellis Loring Dresel (1865–1925)
  • Chargé d’Affaires, Germany (1921–1922)
• *Gerald Augustin Drew (1903–1970)
  • Envoy Extraordinary and Minister Plenipotentiary, Jordan (1950–1952)
  • Director General of the Foreign Service (1952–1954)
  • Ambassador Extraordinary and Plenipotentiary, Bolivia (1954–1957)
  • Ambassador Extraordinary and Plenipotentiary, Haiti (1957–1960)
  • Inspector General of the Department of State and the Foreign Service (1960–1962)
• *Louis Goethe Dreyfus Jr. (1889–1973)
  • Envoy Extraordinary and Minister Plenipotentiary, Iran (1939–1943)
  • Envoy Extraordinary and Minister Plenipotentiary, Afghanistan (1940–1942)
  • Envoy Extraordinary and Minister Plenipotentiary, Iceland (1944–1946)
  • Envoy Extraordinary and Minister Plenipotentiary, Sweden (1946–1947)
  • Ambassador Extraordinary and Plenipotentiary, Afghanistan (1949–1951)
• Garrett Droppers (1860–1927)
  • Envoy Extraordinary and Minister Plenipotentiary, Greece (1914–1920)
  • Envoy Extraordinary and Minister Plenipotentiary, Montenegro (1914–1918)
• *Everett Francis Drumright (1906–1993)
  • Ambassador Extraordinary and Plenipotentiary, China (1958–1962)
• *Robert W. Dry (1951–)
  • Chargé d’Affaires ad interim, Oman (2002)
• Thomas Jefferson Dryer (1808–1879)
  • Commissioner, Hawaii (1861–1863)
• James Taylor DuBois (1851–1920)
  • Envoy Extraordinary and Minister Plenipotentiary, Colombia (1911–1913)
• *Adolph Dubs (1920–1979)
  • Chargé d’Affaires ad interim, Russia (1974)
  • Ambassador Extraordinary and Plenipotentiary, Afghanistan (1978–1979)
• *Patrick D. Duddy (1950–)
  • Ambassador Extraordinary and Plenipotentiary, Venezuela (2007–2010)
• Edward Richard Dudley (1911–2005)
  • Envoy Extraordinary and Minister Plenipotentiary, Liberia (1948–1949)
  • Ambassador Extraordinary and Plenipotentiary, Liberia (1949–1953)
• Guilford Dudley Jr. (1907–2002)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1969–1971)
• Irving Bedell Dudley (1861–1911)
  • Envoy Extraordinary and Minister Plenipotentiary, Peru (1897–1907)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1906–1911)
• *James Dudley (?–)
  • Chargé d’Affaires ad interim, Mozambique (2007)
• *Robert Werner Duemling (1929–2012)
  • Ambassador Extraordinary and Plenipotentiary, Suriname (1982–1984)
• Joseph Daniel Duffey (1932–)
  • Assistant Secretary of State for Educational and Cultural Affairs (1977–1978)
  • Director of the U.S. Information Agency (1993–1999)
• *Thomas M. Duffy (1962–)
  • Chargé d’Affaires ad interim (2016–2019)
• *William Redman Duggan (1915–1977)
  • Chargé d’Affaires ad interim, Tanzania ()
• Angier Biddle Duke (1915–1995)
  • Ambassador Extraordinary and Plenipotentiary, El Salvador (1952–1953)
  • Chief of Protocol (1961–1965)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1965–1968)
  • Ambassador Extraordinary and Plenipotentiary, Denmark (1968–1969)
  • Chief of Protocol (1968)
  • Ambassador Extraordinary and Plenipotentiary, Morocco (1979–1981)
• Robin Chandler Duke (1923–)
  • Ambassador Extraordinary and Plenipotentiary, Norway (2000–2001)
• John Foster Dulles (1888–1959)
  • Secretary of State (1953–1959)
• Charles William Frederic Dumas (1721–1796)
  • Chargé d’Affaires ad interim, Netherlands (John Adams, before leaving The Hague at the end of his longest period of residence there, presented Charles W.F. Dumas as Charge d'Affaires ad interim. Dumas, although holding no commission from the United States, continued to act in this capacity, except during Adams's later visits to the Netherlands, until 1790.)
• Francis E. Dumas (?–)
  • Minister Resident/Consul General, Liberia (1869)
• *Cedric Dumont (1953–)
  • Director of the Office of Medical Services (1996–2003)
• *Donald Albert Dumont (1911–1996)
  • Chargé d’Affaires ad interim, Mali (1960)
  • Envoy Extraordinary and Minister Plenipotentiary, Burundi (1962–1963)
  • Ambassador Extraordinary and Plenipotentiary, Burundi (1963–1966)
• Edwin Dun (1848–1931)
  • Envoy Extraordinary and Minister Plenipotentiary, Japan (1893–1897)
• *Charles Franklin Dunbar (1937–)
  • Chargé d’Affaires ad interim, Afghanistan (1983)
  • Ambassador Extraordinary and Plenipotentiary, Qatar (1983–1985)
  • Ambassador Extraordinary and Plenipotentiary, Yemen (1988–1991)
• *Enoch Sevier Duncan (1920–2000)
  • Chargé d’Affaires ad interim, Iraq (1967)
• *David J. Dunford (1943–)
  • Ambassador Extraordinary and Plenipotentiary, Oman (1992–1995)
• Ralph Anthony Dungan (1923–2013)
  • Ambassador Extraordinary and Plenipotentiary, Chile (1964–1967)
• *David B. Dunn (1949–)
  • Ambassador Extraordinary and Plenipotentiary, Zambia (1999–2002)
  • Ambassador Extraordinary and Plenipotentiary, Togo (2005–2008)
• *James Clement Dunn (1890–1979)
  • Chargé d’Affaires ad interim, Haiti (1924)
  • Chief of Protocol (1928–1930)
  • Chief of Protocol (1933–1935)
  • Assistant Secretary of State for European, Far Eastern, Near Eastern, and African Affairs (1944–1946)
  • Ambassador Extraordinary and Plenipotentiary, Italy (1946–1952)
  • Ambassador Extraordinary and Plenipotentiary, France (1952–1953)
  • Ambassador Extraordinary and Plenipotentiary, Spain (1953–1955)
  • Ambassador Extraordinary and Plenipotentiary, Brazil (1955–1956)
  • Career Ambassador (1956)
• *Elbridge Durbrow (1903–1997)
  • Ambassador Extraordinary and Plenipotentiary, South Vietnam (1957–1961)
• John Stephens Durham (1861–1919)
  • Chargé d’Affaires, Dominican Republic (1891–1893)
  • Minister Resident/Consul General, Haiti (1891–1893)
• Eben Howard Dustin (1923–)
  • Director of the Office of Medical Services (1984–1988)
• Frederick Gary Dutton (1923–2005)
  • Assistant Secretary of State for Legislative Affairs (1961–1964)
• Lane Dwinell (1906–1997)
  • Assistant Secretary of State for Administration (1959–1961)
• *Stuart Anderson Dwyer (1964–)
  • Chargé d’Affaires ad interim, Ireland (2014)
• *William Jennings Dyess (1929–1996)
  • Assistant Secretary of State for Public Affairs (1980–1981)
  • Ambassador Extraordinary and Plenipotentiary, Netherlands (1981–1983)