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Cognomen Kayın (Kayın ) , in the world, is a very rare family name. The cognomen Kayın is habitual in Western Asia, particularly Turkey, where it is a rare surname.
Ali, Aslı, Ayşe, Ahmet, Cansu, Burak, Kamil, Kadir, Kerem, Rabia, Recep, Deniz, Dilek, Duygu, Galip, Taner, Tolga, Tugay, Nigar, Nihat, Nejat, Nuray, Sezer, Sedat, Sevgi, Sevde, Can, Mert, Mete, Sude, Sena, Kaan, Nuri, Elif, Esra, Enes, Erdem, Emin, Ufuk, Meral, Merve, Murat, Samet, Simay, Simge, Suzan, Selim, Semih, Emre, and Engin