Aaron Arrowsmith (1750–1823) was an English cartographer, engraver and publisher. Around 1770 when about twenty years of age, he moved to London and was employed by John Cary, the engraver. He became Hydrographer to the Prince of Wales in 1810 and subsequently to the King in 1820. In January 1790 he made himself famous by his large chart of the world on Mercator projection. Four years later he published another large map of the world on the globular projection, with a companion volume of explanation. The maps of North America (1796) and Scotland (1807) are the most celebrated of his many later productions. It was this latter which led him to uncover the Military Survey, interview its participants and publish the details.. He left two sons, Aaron and Samuel, the elder of whom was the compiler of the Eton Comparative Atlas, of a Biblical atlas, and of various manuals of geography.