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 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