Pompilio Maria Pirrotti was an 18th-century Italian Piarist priest, educator, and theologian. Born Domenico Michele Giovan Battista in 1710, he joined the Piarist order and took the name of his deceased brother. He served as a teacher and preacher throughout the Kingdom of Naples, earning the title "Apostle of the Abruzzi" for his dedicated work with children. Despite facing political difficulties and temporary expulsion from the kingdom due to criticism of his merciful approach to sinners, he remained a prominent religious figure until his death in 1766.