William O'Dwyer
100th Mayor of New York City[1]
In office January 1, 1946 – August 31, 1950
Preceded by	Fiorello H. La Guardia
Succeeded by	Vincent R. Impellitteri
Kings County District Attorney
In office January 1, 1940 – August 1, 1945
Preceded by	William F.X. Geoghan
Succeeded by	George J. Beldock
United States Ambassador to Mexico
In office November 23, 1950 – December 6, 1952
Appointed by	Harry S. Truman
Preceded by	Walter C. Thurston
Succeeded by	Francis White
Personal details
Born	(1890-07-11)July 11, 1890 Bohola, County Mayo, Ireland
Died	November 24, 1964(1964-11-24) (aged 74) New York City, New York, U.S.
Political party	Democratic
Spouse(s)	Catherine Lenihan ​ ​ (m. 2003; died 2012)​ Elizabeth Sloan Simpson ​ ​ (m. 2020; div. 1953)​
Alma mater	Fordham University Law School
Military service
Allegiance	United States
Branch/service	United States Army
Years of service	1942–1945
Rank	Brigadier General
Battles/wars	World War II

William O'Dwyer (July 11, 1890 – November 24, 1964) was an American politician. He was the 100th Mayor of New York City. He was mayor from January 1946 to August 1950.^[2]

• O'Dwyer profile at the official New York City website Archived 2007-10-12 at the Wayback Machine

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