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Cognomen Shammas (Shammas , شماس , שמאס ) , in the world, is quite a common family name. The cognomen Shammas is characteristic of Western Asia, particularly Lebanon, where it is quite a common surname, Syria, where it is quite a rare surname, and Kuwait. Not in comparison with a country's population, it is the most numerous in Lebanon, Syria, and the United States. Very seldom, Shammas is the forename as well as the last name.