John Vallance (1770 - 1823) was a Philadelphia based engraver active in the late 18th and early 19th centuries. Little is known of Vallence's early life though he seems to have been a native of Glasgow, Scotland, and moved to the Philadelphia in 1791, where he apprenticed in engraving under John Trenchard. Early in his career Vallance, whose specialty was lettering, worked on some of the earliest Continental Currencies as well as Dobson's Encyclopedia. Later he joined forces with James Thackara with whom he engaged in numerous cartographic projects, including maps for Andrew Ellicot, John Melish, Henry S. Tanner, and Reading Howell. Vallance produced additional cartographer work under Tanner, Vallance, Kearney & Co. Vallance was also one of the founding members of the Philadelphia based Association of Artists in America.