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Last name Каллас (Calas , Kallas , Callas ) , globally, is a common family name. The last name Каллас is characteristic of Estonia, where it is a common surname, Lebanon, where it is quite a common surname, and Syria, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in the United States, Lebanon, and France. Much less frequently, Каллас is the forename as well as the last name.