Thomas Hamilton, 9th Earl of Haddington, KT, PC, FRS, FRSE (21 June 1780 – 1 December 1858), known as Lord Binning from 1794 to 1828, was a Scottish Conservative statesman.

As might have been expected, Binning followed Pitt's line in his first Parliament, voting with him for the orders of the day, 3 June 1803, against Addington, 7 Mar., 13 and 16 Apr.

He voted against the Grenville ministry on Ellenborough's seat in the cabinet, 3 March 1806, and against the repeal of Pitt's Additional Force Act, 30 April.

Melville secured an opening for him from Viscount Lowther on a vacancy at Cockermouth in January 1807: Melville had suggested that Binning might come in for Haslemere on the same interest instead of Viscount Garlies, when the latter succeeded to the title in November 1806, but Binning had to wait for the next vacancy.

Cockermouth was only available to him for another year, so at the general election of 1807, he found another seat on Lord Clinton's interest at Callington, through their mutual uncle Francis Drake.

On his death the barony of Melrose became extinct while he was succeeded in the remaining titles by his second cousin, George Baillie-Hamilton.

[1] In 1828 he commissioned William Burn to remodel the family seat of Tyninghame House, which passed with the earldom to Baillie-Hamilton.