Giovanni Maria Cassini (1745 - 1824) was a Rome based Italian mathematician, globe maker, geographer, engraver, and cartographer active in the later part of the 18th and early 19th century. He was a disciple of Giovanni Battista Piranesi. He invented new form of projection used for an atlas of the kingdom of Naples issued by Giovanni Antonio Rizzi Zannoni. Cassini is best known as a globe maker and is considered the last of the great 18th century globe makers. His maps are distinctive for their fine engraving, dark strong impressions, and elaborate distinctive cartouche work. Unlike many map and atlas publishers of the period, Cassini did all of his own engraving work - this impregnating each map with his unmistakable style. Though he produced a significant corpus of well-regarded work, little is known of Cassini's personal life. G. M. Cassini is often mistakenly associated with the well-known French cartographic family of the same name, however, they are not related.