Crossword clues for the word: CONSTANTINE The word CONSTANTINE has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for CONSTANTINE Showing 1 to 8 of 8 results Clue(s) — II, King of the Hellenes from 1964-73 2005 film in which Tilda Swinton plays the archangel Gabriel Emperor who called the First Council of Nicaea Eponym of the city now known as Istanbul Father of Flavius Julius Crispus Imperial convert Whom Turkey's largest city was once named for Youthful European monarch.