Fulgenzio Manfredi (Venice, c. 1560 – Rome, 5 July 1610), or Fra Fulgenzio, was a Franciscan friar, an observant minor, and active preacher in Venice from 1594. During the Venetian Interdict imposed by Pope Paul V, he gained particular prominence for his anti-Roman sermons, preaching against papal regulation of religious orders in the Venetian republic. He was a colleague of the famous theologian and scholar, Father Paolo Sarpi in the defence of the Venetian Republic in her struggle with the Curia. Manfredi was tried by the Roman Inquisition, declared a relapsed heretic, and sentenced to be burnt. He was executed in the Campo di Fiore, in Rome.