John Jeremiah Bigsby (14 August 1792 – 10 February 1881), was an English physician who became known for his work on geology, an interest developed while on military service in Lower and Upper Canada, 1818-1826. He was a member of the American Philosophical Society (elected in 1825). Before moving to London, he was Alderman and Mayor of Newark-upon-Trent, 1827–1830.
