Charles Henry St John O'Neill, 1st Earl O'Neill, KP, PC (I) was an Irish politician, peer and landowner.
- Occupation
- politician
- Position held
- Member of the Privy Council of Ireland, member of the House of Lords, Lord Lieutenant of Antrim
- Born
- January 22, 1779
- Died
- February 12, 1841, March 25, 1841
