Petronius (–66) was a Roman courtier during the reign of Nero, and author of the Satyricon.
Petronius may also refer to:
People Members of the Petronia gens, an ancient Roman plebeian family Gaius Petronius ( 75 BC – after 20 BC), Prefect of Roman Aegyptus Petronius of Egypt, 4th-century Egyptian Christian monk Petronius Maximus, Western Roman emperor in 455 Peter I of Trani (), first Norman count of Trani
Other uses Petronius (horse), a racehorse Petronius (oil platform), in the Gulf of Mexico Petronius Paperonius, Donald Duck's ancestor, in comics Petronius the Arbiter, a cat in Robert A. Heinlein's The Door into Summer