Faustus of Byzantium (also Faustus the Byzantine, Armenian: Փաւստոս Բուզանդ|translit='''P'awstos Buzand''') was an Armenian historian of the 5th century. Faustus' History of the Armenians (also known as Buzandaran Patmut'iwnk'
The identity of Pavstos and the referent of Buzand remain unsolved. Buzand is either interpreted as meaning "the Byzantine" or, alternatively, "composer of epics". If the latter interpretation is true, then Buzandaran could be translated as "Epic Histories." Faustus' ostensible Byzantine origin was placed under doubt by another early Armenian historian, Ghazar Parpetsi, who believed that the history attributed to Faustus was of too low quality to have been produced by someone educated in Byzantium. This view was shared by most later Armenian historians. Scholars have long speculated about Faustus' ethnic background (whether he was Armenian, Greek or of another ethnicity) and the original language of his History.