Callinicus IV (Greek: Καλλίνικος Δ΄) born Constantine Mavrikios (Greek: Κωνσταντίνος Μαυρίκιος) was Ecumenical Patriarch of Constantinople for a few months in 1757 and a writer and scholar.Callinicus IV is sometime numbered as Callinicus III because his predecessor Callinicus who was elected in 1726 but died before being enthroned is sometimes not counted amongst the patriarchs.