Pietro Vesconte was a fourteenth-century mapmaker best known for his pioneering portolan charts. Born in Genoa, he performed the bulk of his work in Venice between 1310 and 1330.
While portolan charts are known to have existed since at least the thirteenth century, Vesconte significantly improved on the form and produced highly-accurate charts of the Mediterranean, the Black Sea, and Northern Europe. His 1311 chart of the eastern Mediterranean is the oldest signed and dated nautical chart. He also made at least four signed atlases. One of these, a 1318 atlas, includes an image of a chartmaker at work which is likely Vesconte. The cartographer also made several maps, including a distinctive mappa mundi included in Marino Sanuto’s Liber secretorum fidelium crucis.