Thomas Tyrwhitt (/ˈtɪrɪt/; 27 March 1730 – 15 August 1786) was an English writer, classical scholar, and critic.

He was best known for his edition of The Canterbury Tales in which he modernized the language and provided extensive notes as well as a glossary.

[2] His principal classical works are: Special mention is due of his editions of Chaucer's Canterbury Tales (1775–1778); and of Poems, supposed to have been written at Bristol by "Thomas Rowley" and others in the 15th century (1777–1778), with an appendix to prove that the poems were all the work of Thomas Chatterton.

It was only when the third edition was published that Tyrwhitt changed his mind and pronounced the poems forgeries.

While clerk of the House of Commons he edited Proceedings and Debates of the House of Commons, 1620–1621 from the original manuscript in the library of Queen's College, Oxford, and Henry Elsynge's The Manner of Holding Parliaments in England (1768).