William Henry Langdon was an American banker, lawyer and politician who served as Associate Justice of the California Supreme Court from 1927 to 1939. He previously served as District Attorney of San Francisco during the San Francisco graft trials.
- Occupation
- lawyer, banker, judge
- Position held
- San Francisco District Attorney, justice of the Supreme Court of California
- Citizenship
- United States
- Born
- September 25, 1873
- Died
- August 10, 1939
