The Thirty Tyrants (Latin: Tyranni Triginta) were a series of thirty rulers that appear in the Historia Augusta as having ostensibly been pretenders to the throne of the Roman Empire during the reign of the emperor Gallienus. Given the notorious unreliability of the Historia Augusta, the veracity of this list is debatable; there is a scholarly consensus that the author deliberately inflated the number of pretenders in order to parallel the Thirty Tyrants of Athens. Notwithstanding the author's pretensions regarding the time during which these persons aspired to the throne, this list includes: