Constantine Meliteniotes (Greek: Κωνσταντῖνος Μελιτηνιώτης, fl. 1240s – 2 April 1307) was a Greek ecclesiastical writer in the Byzantine Empire and a prominent supporter of the Union of Lyons between the Greek Orthodox Church and the Roman Catholic Church. He is best known as one of the two archdeacons of Patriarch John XI Bekkos who, together with him, were imprisoned and exiled in the years following the breakdown of the union; he remained under house arrest until his death.