George Henry Hay, 8th Earl of Kinnoull FRS (23 June 1689 – 28 July 1758), styled as Viscount Dupplin from 1709 to 1719, was a British peer, Tory politician, and diplomat.

He was the eldest son of Thomas Hay, 7th Earl of Kinnoull and Elizabeth, daughter of William Drummond, 1st Viscount Strathallan.

[2] He was created along with eleven others, who became known as Harley's Dozen, with the aim of supporting the Tory government's peace policy in the previously Whig-dominated Lords.

William Bromley wrote, on the occasion of Viscount Dupplin accepting the role in 1711, that he was "so pretty a gentleman, so generally well beloved.

[3] In 1713, he bought Brodsworth Hall, Yorkshire from the Wentworth family and rebuilt the house.