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Cognomen Ioannidis (Ioannidis , Ιωαννίδης , Иоаннидис ) , around the world, is a common last name. The family name Ioannidis is habitual in Cyprus, where it is a common surname, Greece, and Australia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Greece, Cyprus, and Germany.