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Last name Yalçın (Yalçın , Ялчин , يالچين ) , globally, is a common surname. The cognomen Yalçın is characteristic of Western Asia, particularly Turkey, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Azerbaijan. Not in comparison with a country's population, it is the most numerous in Turkey, Azerbaijan, and China. Likewise, Yalçın is the forename as well as the last name.