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Globally, Сия (Siya , Sija , Сия ) is a widespread unisex given name. The first name Сия is habitual in India, where it is quite a common unisex name, Bulgaria, where it is quite a common girly name, and Ethiopia, where it is quite a rare female name. In absolute terms, it most frequently occurs in India, Ethiopia, and South Africa. Very seldom, Сия is the last name as well as the forename.