William Groves Clark, Jr. (1912–1990) was an American jurist and politician who served as an associate justice of Gloucester District Court and was a member of the Massachusetts House of Representatives.
- Occupation
- lawyer, politician
- Position held
- member of the Massachusetts House of Representatives, member of the Massachusetts House of Representatives, member of the Massachusetts House of Representatives
- Citizenship
- United States
- Born
- May 6, 1912
- Died
- November 14, 1990