Petronius Arbiter marubuci ne kuma basarake wanda ya rayu a karni na daya miladiyya. An fi saninsa da aikinsa na "Satyricon," wani littafi mai ban sha'awa wanda ya binciko lalata da lalata al'ummar Roma a lokacin mulkin Sarkin sarakuna Nero.Ana amfani da kalmar "Petronius Arbiter" sau da yawa don komawa ga Petronius. da kansa, kuma yawanci ana fassara shi da "Petronius Alƙali" ko "Petronius the Arbiter." Kalmar “arbiter” tana nufin wani wanda yake da iko a kan wani batu ko kuma wanda ke da ikon yanke shawara ko sasanta husuma, yayin da “Petronius” kawai sunan marubucin ne.