Giuseppe Ottavio Pitoni (Rieti, 18 March 1657 – Rome, 1 February 1743) was an Italian organist and composer. He became one of the leading musicians in Rome during the late Baroque era, the first half of the 18th century.Taken to Rome as an infant, he began vocal study with Pompeo Natali at the age of five and sang in the choir of San Giovanni dei Fiorentini from age eight. At Santi Apostoli he sang and studied counterpoint with Francesco Foggia, where his early compositions were performed. By age sixteen he was maestro di cappella at Santa Maria Maggiore, Monterotondo, a historic church near Rome. In 1673 as maestro for the cathedral at Assisi he began intensive study of the works of Palestrina, and in 1676 moved to the cathedral at Rieti.