William Richards Castle Jr. (1878–1963)

Non-career appointee
State of Residence: District of Columbia

1. Assistant Secretary of State
   Appointed: February 26, 1927
   Entry on Duty: April 2, 1927
   Termination of Appointment: December 13, 1929
2. Ambassador Extraordinary and Plenipotentiary (Japan)
   Appointed: December 11, 1929
   Presentation of Credentials: January 24, 1930
   Termination of Mission: Left Japan May 27, 1930
3. Assistant Secretary of State
   Appointed: June 4, 1930
   Entry on Duty: July 1, 1930
   Termination of Appointment: April 1, 1931
4. Under Secretary of State
   Appointed: April 1, 1931
   Entry on Duty: April 2, 1931
   Termination of Appointment: March 5, 1933
   • Commissioned during a recess of the Senate; recommissioned after confirmation on Dec 17, 1931.