Thomas Hay, 9th Earl of Kinnoull

The Right Honourable The Earl of Kinnoull PC
Portrait by David Martin
Lord Commissioner of the Treasury
In office 1754–1755
Member of Parliament for Cambridge
In office 1741–1758
Preceded by	Sir John Hynde Cotton, Bt
Succeeded by	Soame Jenyns
Personal details
Born	(1710-07-04)4 July 1710
Died	27 December 1787(1787-12-27) (aged 77)
Spouse	Constantia Ernle ​ ​ (m. 1741; died 1753)​
Parents	George Hay, 8th Earl of Kinnoull Abigail Harley

Thomas Hay, 9th Earl of Kinnoull PC (4 July 1710 – 27 December 1787), styled Viscount Dupplin from 1719 to 1758, was a Scottish peer, British politician, and scholar.