Constantine II (Greek: Κωνσταντῖνος Βʹ, Konstantínos II; pronounced [ˌkonstanˈdinos]; born 2 June 1940) was the King of Greece, reigning from 1964 until the monarchy was abolished in 1973. He is also by birth a Prince of Denmark.He succeeded his father Paul in March 1964, being styled His Majesty Constantine II, King of the Hellenes (Greek: Κωνσταντῖνος Βʹ, Βασιλεὺς τῶν Ἑλλήνων).