Bardiya (Old Persian: Brdiya; Ancient Greek: Smrdis; possibly died 522 BC), also named as Tanyoxarces (Ancient Greek: Tanuoxrks) by Ctesias, was a son of Cyrus the Great and the younger brother of Cambyses II, both Persian kings. There are sharply divided views on his life. Bardiya either ruled the Achaemenid Empire for a few months in 522 BC, or was impersonated by a magus called Gaumta (Old Persian: ); whose name is given by Ctesias as Sphendadates (Old Persian: Spantadta; Ancient Greek: Sphendadts), until he was toppled by Darius the Great.