William Joseph Sebald (November 5, 1901 – August 10, 1980) was an American diplomat who served as United States Ambassador to Burma from April 1952 to July 1954, and to Australia from 1957 to 1961.

[1] Sebald moved to Kobe, Japan in 1925 as part of an officer's language program.

[2] In 1933, Sebald earned his juris doctor degree specializing in international law from the University of Maryland.

[2] Sebald served during World War II with the Office of Naval Intelligence (ONI) back in the United States starting in 1939.

[1] Sebald met his wife Edith France deBecker in Kobe, Japan.