Pietro d'Abano (1250?‑1316), also known as Petrus de Apono or Aponensis, was an Italian physician, philosopher, and astrologer. He was born in 1250, or, according to others, in 1246, in the Italian town from which he takes his name, now Abano Terme.

After studying medicine and philosophy at Paris he settled at Padua, where he speedily gained a great reputation as a physician, and availed himself of it to gratify his avarice by refusing to visit patients except for an exorbitant fee. Perhaps this, as well as his meddling with astrology, caused him to be charged with practising magic, the particular accusations being that he brought back into his purse, by the aid of the devil, all the money he paid away, and that he possessed the philosopher's stone. He was twice brought to trial by the Inquisition; on the first occasion he was acquitted, and he died (1316) before the second trial was completed. He was found guilty, however, and his body was ordered to be exhumed and burned; but a friend had secretly removed it, and the Inquisition had therefore to content itself with the public proclamation of its sentence and the burning of Abano in effigy. In his writings he expounds and advocates the medical and philosophical systems of Averroes and other Arabian writers. His best known works are the Conciliator differentiarum quae inter philosophos et medicos versantur (Mantua, 1472; Venice, 1476), and De venenis eorumque remediis (1472), of which a French translation was published at Lyons in 1593.