I - Principals and Chiefs Alphabetical
Listing - People - Department History
Principal Officers and Chiefs of Mission, by Name: I
NOTE TO READERS
Updates to the Principal Officers and Chiefs of Mission database are currently suspended. For information about the Department’s current and recent leadership, we recommend visiting the Department of State homepage’s Biographies of Senior Officials and List of U.S. Ambassadors.
Notice posted on January 12, 2024.
Last
updated March 14, 2024.
Note: Career Foreign Service appointees are asterisked.
- Lewis Morris Iddings (1850–1921)
- Agent/Consul General, Egypt (1905–1910)
- Henry Clay Ide (1844–1921)
- Envoy Extraordinary and Minister Plenipotentiary, Spain (1909–1913)
- Fred Charles Iklé (1924–2011)
- Director of the U.S. Arms Control and Disarmament Agency (1973–1977)
- Alice Stone Ilchman (1935–2006)
- Assistant Secretary of State for Educational and Cultural Affairs (1978)
- Karl Frederick Inderfurth (1946–)
- Assistant Secretary of State for South and Central Asian Affairs (1997–2001)
- Martin S. Indyk (1951–)
- Ambassador Extraordinary and Plenipotentiary, Israel (1995–1997)
- Assistant Secretary of State for Near Eastern Affairs (1997–1999)
- Ambassador Extraordinary and Plenipotentiary, Israel (1999–2001)
- Charles Jared Ingersoll (1782–1862)
- Envoy Extraordinary and Minister Plenipotentiary, France (Not commissioned; nomination rejected by the Senate.)
- George Pratt Ingersoll (1861–1927)
- Envoy Extraordinary and Minister Plenipotentiary, Thailand (1917–1918)
- Joseph Reed Ingersoll (1786–1868)
- Envoy Extraordinary and Minister Plenipotentiary, United Kingdom (1852–1853)
- Ralph Isaacs Ingersoll (1789–1872)
- Envoy Extraordinary and Minister Plenipotentiary, Russia (1846–1848)
- Robert Stephen Ingersoll (1914–2010)
- Ambassador Extraordinary and Plenipotentiary, Japan (1972–1973)
- Assistant Secretary of State for East Asian and Pacific Affairs (1973–1974)
- Deputy Secretary of State (1974–1976)
- *Earl Michael Irving (1953–)
- Ambassador Extraordinary and Plenipotentiary, Swaziland (2009–2012)
- *Frederick Irving (1921–2016)
- Ambassador Extraordinary and Plenipotentiary, Iceland (1972–1976)
- Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs (1976–1977)
- Ambassador Extraordinary and Plenipotentiary, Jamaica (1977–1978)
- Washington Irving (1783–1859)
- Envoy Extraordinary and Minister Plenipotentiary, Spain (1842–1846)
- John Nichol Irwin (1845–1905)
- Envoy Extraordinary and Minister Plenipotentiary, Portugal (1899–1900)
- John Nichol Irwin II (1913–2000)
- Under Secretary of State (1970–1972)
- Deputy Secretary of State (1972–1973)
- Ambassador Extraordinary and Plenipotentiary, France (1973–1974)
- William Wallace Irwin (1803–1856)
- Chargé d’Affaires, Denmark (1843–1847)
- *Heyward Isham (1926–2009)
- Ambassador Extraordinary and Plenipotentiary, Haiti (1973–1977)
- Director of the Bureau of Counterterrorism (1977–1978)
- *Harriet W. Isom (1936–)
- Ambassador Extraordinary and Plenipotentiary, Benin (1989–1992)
- Chargé d’Affaires ad interim, Laos (1989)
- Ambassador Extraordinary and Plenipotentiary, Cameroon (1992–1996)
- *William H. Itoh (1943–)
- Ambassador Extraordinary and Plenipotentiary, Thailand (1995–1999)