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Cognomen Kasymbek (Касымбек , Касимбек , Kasymbek ) , all over the world, is quite a rare family name. The cognomen Kasymbek is habitual in Kyrgyzstan, where it is quite a common surname, Azerbaijan, where it is quite a rare surname, and Kazakhstan, where it is a rare surname. More prevalently, Kasymbek is the forename as well as the last name.