Frederick St John, 2nd Viscount Bolingbroke was a British peer and landowner. His father was John St John, 2nd Viscount St John, half-brother of Henry St John, 1st Viscount Bolingbroke (1678–1751). His mother was Anne Furnese and his younger brother General the Hon. Henry St John (1738–1818).
- Born
- 1734, December 21, 1732
- Died
- 1787, May 5, 1787
