Giacomo or Jacopo d'Angelo, also surnamed De Scarperia, (c. 1360–1411), better known by his Latin name Jacobus Angelus, was an Italian classical scholar, humanist, and translator of ancient Greek texts during the Renaissance. Named for the village of Scarperia in the Mugello in the Republic of Florence, he traveled to Venice where the Byzantine emperor Manuel II Palaiologos' ambassador Manuel Chrysoloras (c. 1350–1415) was teaching Greek, the first scholar to hold such course in medieval Italy.
Da Scarperia returned with Chrysoloras to Constantinople—the first Florentine to do so—along with Guarino da Verona. In the Byzantine Empire, he studied Greek literature and history under Demetrios Kydones. Coluccio Salutati wrote to urge Da Scarperia to search the libraries there, particularly for editions of Homer and Greek dictionaries, with the result that he translated Ptolemy's Geography into Latin in 1406. He first dedicated it to Pope Gregory IX and then to Pope Alexander V in 1409. He also brought new texts of Homer, Aristotle, and Plato to the attention of Western scholars of philosophy and ancient Greek literature.