Thomas Whately (1726 – 26 May 1772), an English politician and writer, was a Member of Parliament (1761–1768), who served as Commissioner on the Board of Trade, as Secretary to the Treasury under Lord Grenville, and as Under-secretary of State under Lord North (1771–1772). As an MP he published a letter on the reasonableness of the Stamp Act, 1765, which earns him a place in the events that led to the American Revolution.

He is probably best remembered for his Observations on Modern Gardening, illustrated by descriptions (London, 1770), the most important and successful contemporary book on the English Landscape Garden style, translated into German and French by the following year.