Lieutenant-Colonel John James Hamilton, 1st Marquess of Abercorn was a British politician and militia officer who represented East Looe and St Germans in the House of Commons of Great Britain from 1783 to 1789.
- Occupation
- politician, aristocrat
- Position held
- Member of the Privy Council of Ireland, member of the House of Lords, member of the 15th Parliament of Great Britain, member of the 16th Parliament of Great Britain
- Citizenship
- Scotland
- Born
- July 1756
