Gaddi is both a surname and a given name. Notable people with the name include:
Surname:
Gaddo Gaddi (c. 1239 – c. 1312), Florentine mosaicist and painterTaddeo Gaddi (c. 1290 – 1366), Florentine painter, son of Gaddo GaddiAgnolo Gaddi (c. 1350 – 1396), Florentine painter, son of Taddeo GaddiJacopo Gaddi (c. 1600 - after 1658), Florentine poetGiovanni Gaddi, owner of the Hellenistic Greek marble Gaddi TorsoClemente Gaddi (1901–1993), an Italian Roman Catholic prelateGiven name:
Gaddi Vasquez (born 1955), director of the United States Peace Corps, 2002–06, U.S. Ambassador to the United Nations Agencies for Food and Agriculture, 2006–09