Antonio Sandini (30 June 1692 – 23 February 1751, Padua, Italy) was an Italian ecclesiastical historian. Through the interest of his bishop, cardinal Rezzonico (later pope Clement XIII), Sandini became a librarian and professor of ecclesiastical history at Padua. He is known principally by his Vitae Pontificum Romanorum (Ferrara, 1748; reprinted under the title Basis Historiae Ecclesiasticae). He also wrote Historiae Familiae Sacrae, Hist. SS. Apostolorum, Disputationes XX ex. Hist. Eccles., and Dissertations in Defence of his Hist. Fam. Sac.