Balthazar (also spelled Balthasar, Balthassar, or Baltazar), from Akkadian 𒂗𒈗𒌑𒀫 Bel-shar-uzur, meaning "Bel protects the King" is the name commonly attributed to one of the Three Wise Men, at least in the west. ... It is an alternate form of the Babylonian king Belshazzar, mentioned in the Book of Daniel.