Baltasar \b(a)-lta-sar, bal-tasar\ as a boy's name is a variant of Balthasar (Babylonian), and the meaning of Baltasar is "Baal protect the king".
The baby name Baltasar sounds like Baltazar, Balthazar and Balthasaar. Other similar baby names are Baldemar, Baldomar, Balthazaar and Baldassare.