Marco Angelo Flavio Comneno (Latin: Marcus Angelus Flavius Comnenus; 1608–1679?) was according to the official reconstruction of the Sacred Military Constantinian Order of Saint George the grand master of the order from 1678 to 1679, though the historicity of his tenure as grand master has been questioned on the basis that he might in actuality have predeceased his supposed predecessor, his older brother Angelo Maria Angeli. Marco's family, the Angelo Flavio Comneno, claimed descent from the Angelos dynasty of Byzantine emperors. The modern Constantinian Order attributes Marco the titular titles previously used by his older brother; "Prince of Macedonia and Thessaly" and "Duke and Count of Drivasto and Durazzo".