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Cognomen Sezen (Sezen , سيزين , Сезен ) , all over the world, is a common family name. The cognomen Sezen is characteristic of Turkey, where it is quite a common surname, North Macedonia, where it is quite a rare surname, and Albania. In absolute terms, it is commonest in Turkey, Germany, and Austria. Likewise, Sezen is the forename as well as the last name.