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Cognomen Chul (Chul , Чул , Ый ) , in all the world, is quite a common family name. The cognomen Chul is characteristic of South Korea, where it is quite a rare surname, Belarus, and Taiwan, where it is a rare surname. In absolute terms, it is the most numerous in South Korea, China, and Indonesia. Likewise, Chul is the forename as well as the last name.