John Senex (1678- 1740) was an English cartographer, engraver and explorer. He was also an astrologer and geographer to Queen Anne of Great Britain. He was a contemporary of the cartographer Herman Moll and a rival. In collaboration with Charles Price and James Maxwell he produced many fine maps of the world, the continents and various countries. During his collaboration with Charles Price, Senex created a series of engravings for the London Almanacs and in 1714 he published together with Maxwell an English Atlas.
He also had an interest in early road maps. In 1719, he issued an updated edition of Ogilby’s Brittania in miniature featuring the strip type road maps of England and Wales.
As a footnote, he was one of the cartographers who perpetuated the depiction of California as an island instead of part of mainland North America. Many of these maps are, as a result, appealing to certain collectors.