Pieter Mortier (1661–1711) was a geographer, copper engraver, printer and publisher from Amsterdam. In 1710 he bought most of the plates of Frederick de Wit at an auction. After his death a year later, the plates went into the ownership of his son, Cornelis, Johannes Covens I who together founded Covens & Mortier. Covens & Mortier grew to become one of the largest cartography publishing houses of the 18th century.