I

Iddings, Lewis Morris (1850-1921)
Non-career appointee
1905 Agent/Consul General, Egypt

Ide, Henry Clay (1844-1921)
Non-career appointee
1909 Envoy Extraordinary and Minister Plenipotentiary, Spain

Ikle, Fred Charles (1924- )
Non-career appointee
1973 Director, Arms Control and Disarmament Agency

Ilchman, Alice Stone (1935- 2006)
Non-career appointee
1978 Assistant Secretary for Educational and Cultural Affairs

Inderfurth, Karl Frederick (1946- )
Non-career appointee
1997 Assistant Secretary for South Asian Affairs

Indyk, Martin S. (1951- )
Non-career appointee
1995 Ambassador Extraordinary and Plenipotentiary, Israel
1997 Assistant Secretary of State for Near Eastern Affairs
1999 Ambassador Extraordinary and Plenipotentiary, Israel

Ingersoll, Charles Jared (1782-1862)
Non-career appointee
1847 [Envoy Extraordinary and Minister Plenipotentiary, France]

Ingersoll, George Pratt (1861-1927)
Non-career appointee
1917 Envoy Extraordinary and Minister Plenipotentiary, Siam

Ingersoll, Joseph Reed (1786-1868)
Non-career appointee
1852 Envoy Extraordinary and Minister Plenipotentiary, United Kingdom

Ingersoll, Ralph Isaacs (1789-1872)
Non-career appointee
1846 Envoy Extraordinary and Minister Plenipotentiary, Russia

Ingersoll, Robert Stephen (1914- )
Non-career appointee
1972 Ambassador Extraordinary and Plenipotentiary, Japan
1973 Assistant Secretary for East Asian and Pacific Affairs
1974 Deputy Secretary of State

Irving, Frederick (1921- )
Foreign Service officer
1972 Ambassador Extraordinary and Plenipotentiary, Iceland
1976 Assistant Secretary for Oceans and International Environmental and Scientific Affairs
1977 Ambassador Extraordinary and Plenipotentiary, Jamaica

Irving, Washington (1783-1859)
Non-career appointee
1842 Envoy Extraordinary and Minister Plenipotentiary, Spain

Irwin, John Nichol (1845-1905)
Non-career appointee
1899 Envoy Extraordinary and Minister Plenipotentiary, Portugal

Irwin, John Nichol II (1913-2000)
Non-career appointee
1970 Under Secretary of State
1972 Deputy Secretary of State
1973 Ambassador Extraordinary and Plenipotentiary, France

Irwin, William Wallace (1803-1856)
Non-career appointee
1843 Chargé d'Affaires, Denmark

Isham, Heyward (1926- )
Foreign Service officer
1973 Ambassador Extraordinary and Plenipotentiary, Haiti
1977 Director, Office for Combatting Terrorism

Isom, Harriet W. (1936- )
Foreign Service officer
1986 Chargé d' Affaires ad interim, Laos
1987 Chargé d' Affaires, Laos
1989 Ambassador Extraordinary and Plenipotentiary, Benin
1992 Ambassador Extraordinary and Plenipotentiary, Cameroon

Itoh, William H. (1943- )
Foreign Service officer
1995 Ambassador Extraordinary and Plenipotentiary, Thailand