Marco Antonio Da Mula, known as cardinal Marcantonio Amulio (Venice, 1506 – Rome, 17 March 1572) was a Venetian ambassador and a cardinal of the Roman Catholic Church.
Marco Antonio Da Mula has been Venetian ambassador at the courts of Charles V (1552–54), Philip II (1559) and pope Pius IV (1560–61). This pope named him cardinal on 26 February 1561. He has been bishop of Rieti, member of the Holy Office and Cardinal Librarian of the Vatican Library. He died in Rome on 17 March 1572.