Thomas Kitchin (1719–1784) was an English engraver and map-maker, who became hydrographer to the king.
He was born in Southwark, and was apprenticed to Emanuel Bowen in 1732. Originally based in Clerkenwell, by late 1755 Kitchin was established on Holborn Hill. From 1773 Kitchin was royal hydrographer to the king. He died in St Albans 23 June 1784. He married Sarah Bowen, daughter of Emanuel, in 1739, and then Jane, daughter of Joseph Burroughs, in 1762.
He produced John Elphinstone's map of Scotland (1746), Geographia Scotiae (1749), and The Small English Atlas (1749) with Thomas Jefferys. The Large English Atlas (with Bowen 1749–60) was a serious attempt to cover England at large scale. In 1755 Kitchin engraved the Mitchell Map map of North America. He produced 170 maps for the London Magazine (1747–83).