Thomas Hay, 9th Earl of Kinnoull, PC, styled Viscount Dupplin from 1719 to 1758, was a Scottish peer, British politician, and scholar.
- Occupation
- diplomat, politician
- Position held
- ambassador, member of the 11th Parliament of Great Britain, member of the 9th Parliament of Great Britain, member of the 10th Parliament of Great Britain
- Citizenship
- Kingdom of Great Britain
- Born
- July 4, 1710
- Died
- September 27, 1787