Priscus or Priskos (; died 613) was a leading East Roman (Byzantine) general during the reigns of the Byzantine emperors Maurice (reigned 582–602), Phocas (r. 602–610) and Heraclius (r. 610–641). Although the contemporary sources are markedly biased in his favour, Priscus comes across as an effective and capable military leader. Under Maurice, he distinguished himself in the campaigns against the Avars and their Slavic allies in the Balkans. Absent from the capital at the time of Maurice's overthrow and murder by Phocas, he was one of the few of Maurice's senior aides who were able to survive unharmed into the new regime, remaining in high office and even marrying the new emperor's daughter. Priscus, however, also negotiated with and assisted Heraclius in the overthrow of Phocas, and was e