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Family name Samach (Samach ) , across the world, is a rare cognomen. The cognomen Samach is habitual in Israel, where it is quite a rare surname, Algeria, where it is a rare surname, and Thailand, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Israel, Algeria, and the United States. Much less frequently, Samach is the forename as well as the last name.