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Family name سیاوش (Siavash , سیاوش ) , all over the world, is a rare cognomen. The last name سیاوش is habitual in North Macedonia, where it is a rare surname, Afghanistan, and Iran. Not in comparison with a country's population, it is the most numerous in Iran, Afghanistan, and China. More prevalently, سیاوش is the forename as well as the last name.