Gaius Julius Priscus (flourished 3rd century) was military man and member of the Praetorian Guard in the reign of Gordian III. Priscus was born in the Roman province of Syria, possibly in Damascus, son of a Julius Marinus a local Roman citizen, possibly of some importance. The name of his mother is unknown, but his brother was Marcus Julius Philippus, later the Roman Emperor known as Philip the Arab. Priscus was probably older than Philip, since the latter's political career was pushed by his own influence. According to several inscriptions, Priscus was prefect of the province of Mesopotamia, procurator of Macedonia, second in command to Egypt's governor and held judicial responsibilities in Alexandria. Priscus became a member of the Praetorian Guard around 242 during Gordian III Persian c