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Throughout the world, Siâ (Сия , Siâ) is quite a rare girly forename. The first name Siâ is characteristic of Bulgaria, where it is quite a common feminine name, and Kazakhstan, where it is a rare principally female, but very infrequently male name. Also, Siâ is the last name as well as the forename.
Siâ is also a name for the fictitious and mythical characters: .