Petronio may refer to:
People: Petronio Fancelli (1734–1800), Italian painter Petronio Franceschini (1650–1680), Baroque music composer from Bologna Petrônio Gontijo (born 1968), Brazilian actor Bruno Petronio (1936–2002), Italian Olympic sailor Renato Petronio (1891–1976), Italian rower Stephen Petronio (born 1956), artistic director, choreographer & dancer in New York City Petronio Veroni (1600–1653), Roman Catholic prelate, Bishop of Boiano
Churches: San Petronio Basilica, the main church of Bologna, the old città d'arte in the Emilia Romagna region of Italy Santi Giovanni Evangelista e Petronio, the national church of the Bolognese on the Via del Mascherone, Rome