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Cognomen Işık (Işık , Ышик , ウシュク) , all over the world, is quite a common last name. The surname Işık is characteristic of Turkey, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Austria, where it is a rare surname. In absolute terms, it is the most numerous in Western Asia, particularly Turkey, Iraq, and Saudi Arabia. Very seldom, Işık is the forename as well as the last name.