Reuben Burrow (30 December 1747 – 7 June 1792) was an English mathematician, surveyor and orientalist. Initially a teacher, he was appointed assistant to Sir Nevil Maskelyne, the fifth Astronomer Royal, at the Royal Greenwich Observatory, and was involved in the Schiehallion experiment. He later conducted research in India, teaching himself Sanskrit and becoming one of the first members of the Asiatic Society. He was the first to measure the length of a degree of an arc of longitude along the Tropic of Cancer. His other major achievements included a study of Indian mathematics, although he earned a reputation for being rude and unpolished amid the leading figures in science who came mostly from the upper-class. One commentator called him "an able mathematician but a most vulgar and scurrilous dog."