Pérotin (fl. c. 1200) was a European composer, believed to be French, who lived around the end of the twelfth and beginning of the thirteenth century. He was the most famous member of the Notre Dame school of polyphony. He was one of very few composers of his day whose name has been preserved, and can be reliably attached to individual compositions; this is due to the testimony of an anonymous English student at Notre Dame known as Anonymous IV, who wrote about him. Anonymous IV called him "Perotin Magister", which means Pérotin the master or expert.