Petronio Franceschini (Bologna, January 9, 1651 – Venice, December 4, 1680) was a Baroque music composer from Bologna.
Franceschini studied under Perti and became also the main cellist in Basilica di San Petronio. He composed mainly church music and he is credited of an innovative use of trumpet and voices. Also notable are his 6 operas. He died in Venice without finishing his last one, Dionisio, which was finished by Partenio.