Constantine Opos (Greek: Κωνσταντίνος Ὤπος) was a notable Byzantine general and aristocrat in the first half of the reign of Emperor Alexios I Komnenos (r. 1081–1118).
He participated in the wars against the Normans and the Seljuk Turks, eventually reaching the rank of megas doux (commander-in-chief of the Byzantine navy).
The Exkoubitoi are never heard from again; their remnants were probably disbanded, marking the end of this historic unit, which had been founded as an elite imperial bodyguard by Emperor Leo I the Thracian (r.
[1] In 1090, Opos was subordinate to the admiral Constantine Dalassenos during the siege of the island of Chios, held by the forces of the Turkish emir Tzachas of Smyrna.
[2] In 1092, he was charged with retaking the town of Cyzicus on the Marmara Sea, after a previous Byzantine naval expedition under Alexander Euphorbenos had failed.