'Ulpian'; Latin name Gnaeus Domitius Annius Ulpianus; was a Roman jurist of Tyrian (Tyre; Arabic: ???; ?ur) Lebanese ancestry.

He made his first appearance in public life as assessor in the auditorium of Papinian and member of the council of Septimius Severus; under Caracalla he was master of the requests (magister libellorum). Elagabalus (also known as Heliogabalus) banished him from Rome; but on the accession of Alexander (222) he was reinstated; and finally became the emperor's chief adviser and praefectus praetorio.

His curtailment of the privileges granted to the Praetorian Guard by Elagabalus provoked their enmity; and he narrowly escaped their vengeance; ultimately he was murdered in the palace; in the course of a riot between the soldiers and the mob.