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Around the world, Сэй (Say , Сэй ) is a common epicene forename. The forename Сэй is habitual in Mongolia, where it is quite a common unisex name, Tunisia, where it is quite a rare unisex name, and Egypt. In absolute terms, it is the most numerous in Mongolia, Indonesia, and India. More prevalently, Сэй is the last name as well as the forename.