Francesco di Giorgio Martini (His 1439 - 1502) is an artist and Sienan engineer of the Renaissance which collaborated with Neroccio di Landi in a workshop common to His between 1468 and 1475.

Less famous than Léonard de Vinci, than it had as a pupil on some of his building sites (Dôme of Milan), it also left less writings, undoubtedly because of many orders. Its notebook of engineer is a model of the genre, in particular because of quality of its feature. It would have inspired much Léonard de Vinci of which some of its works would be allotted to him wrongly. Francesco di Giorgio Martini left us many drawings of machines such as the Crank-connecting rod system with the Centrifugal governor or the hydraulic saw.

It takes part in Urbin with work of the ducal palate commissioned by Frederic de Montefeltro near the Dalmatian architect Luciano Laurana. With Cosimo Rosselli, Roberto Valturio and Frederico Barocci he undertakes decorations of the palate and resumes work in 1472 of them. It is probably, with Botticelli, the author of the plans of the studiolo of Frederic, carried out by Baccio Pontelli.