Giorgio Sideri called Callapoda (active 1537–1565) was a 16th-century cartographer, born in Candia (Crete), who worked in Venice, where map-making skills were essential to the mercantile economy and to protection and control of the far-flung Venetian thalassocracy. Four of his navigational charts and five hydrographical atlases, often in ink and watercolor on parchment are known; they bear dates ranging from 1537 to 1565 and several are dedicated to Venetian nobles.