Robert Stephen Ingersoll (1914–2010)

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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.

Non-career appointee
State of Residence: Illinois

Ambassador Extraordinary and Plenipotentiary (Japan)
Appointed: February 29, 1972
Presentation of Credentials: April 12, 1972
Termination of Mission: Left post on November 8, 1973
Assistant Secretary of State for East Asian and Pacific Affairs
Appointed: December 19, 1973
Entry on Duty: January 8, 1974
Termination of Appointment: July 9, 1974
Deputy Secretary of State
Appointed: June 30, 1974
Entry on Duty: July 10, 1974
Termination of Appointment: March 31, 1976