The son of the consular Gaius Junius Tiberianus, Tiberianus was a member of the Roman Senate. In AD 281, Tiberianus was elevated to the consulship, serving as consul posterior alongside the emperor Marcus Aurelius Probus.^[1] He later served as Proconsular governor of Asia around AD 295 or 296.^[2]

Tiberianus also served as Praefectus Urbi of Rome from September 12, 303 to January 4, 304. At some stage, he and 12 other senators each contributed 400,000 sesterces, probably for the construction of a building.^[3]

• Christol, Michel, Essai sur l'évolution des carrières sénatoriales dans la seconde moitié du IIIe siècle ap. J.C. (1986).
• Martindale, J. R.; Jones, A. H. M, The Prosopography of the Later Roman Empire, Vol. I AD 260–395, Cambridge University Press (1971).