Pedro de Arbués was a 15th-century Spanish priest and an Augustinian canon who served as the Inquisitor General of Aragon. Born in Épila, he studied philosophy and earned a doctorate in Bologna before returning to Spain to join the cathedral chapter at La Seo. His career as an inquisitor, appointed by Tomás de Torquemada, made him a controversial figure during a period of intense religious scrutiny. He was assassinated while praying in the cathedral in Zaragoza in 1485, an event that significantly influenced the subsequent activities of the Spanish Inquisition.