An anonymous book appeared in Venice in 1547 titled L'Alcorano di Macometto, and, according to the title page, it contained "the doctrine, life, customs, and laws [of Mohammed] . . . newly translated from Arabic into the Italian language." Were this true, L'Alcorano di Macometto would have been the first printed direct translation of the Qur'an in a European vernacular language. The truth, however, was otherwise. As soon became clear, the Qur'anic sections of the book—about half the volume—were in fact translations of a twelfth-century Latin translation that had appeared in print in Basel in 1543. The other half included commentary that balanced anti-Islamic rhetoric with new interpretations of Muhammad's life and political role in pre-Islamic Arabia. Despite having been discredited almost immediately, the Alcorano was affordable, accessible, and widely distributed. In The Venetian Qur'an, Pier Mattia Tommasino uncovers the volume's mysterious origins, its previously unidentified author, and its broad, lasting influence.