Constantine Harmenopoulos (Greek: Κωνσταντῖνος Ἁρμενόπουλος; 1320 – c. 1385) was a Byzantine jurist of Armenian descent^[1] who held the post of katholikos kritēs ("universal judge") of Thessalonica, one of the highest judicial offices in the Byzantine Empire.

He is best known for his Hexabiblos (1344–1345), a law book in six volumes in which he compiles a wide range of Byzantine legal sources. First printed Paris in 1540, the Hexabiblos was widely adopted in the Balkans under the Ottoman Empire. In 1828, it was also adopted as the interim civil code in the newly independent Greek state.

• Burgmann, Ludwig (2001). "Konstantinos Armenopulos". In Michael Stolleis (ed.). Juristen: ein biographisches Lexikon; von der Antike bis zum 20. Jahrhundert (in German) (2nd ed.). München: Beck. p. 39. ISBN 3-406-45957-9.
• Foundation of the Hellenic World, History of the late Byzantine Period, The Hexabiblos, accessed January 2007
• Fögen, Marie Theres (1991). "Harmenopoulos, Constantine". In Kazhdan, Alexander (ed.). The Oxford Dictionary of Byzantium. Oxford and New York: Oxford University Press. p. 902. ISBN 0-19-504652-8.
• А.П. Каждан. Армяне в составе господствующего класса Византийской империи в 11-12 вв. Стр 99 ч.27 Арменопулы. АН АрмССР 1973 г. (in Russian).

• Manuale legum sive Hexabiblos cum appendicibus et legibus agrariis, Gustav Ernst Heimbach (ed.), Lipsiae, T. G. Weigel, 1851.
• Manuale legum sive Hexabiblos cum appendicibus et legibus agrariis, Gustav Ernst Heimbach (ed.), Lipsiae, T. G. Weigel, 1851.