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Cognomen Iusupov (Юсупов , Iusupov ) , in the entire world, is a common last name. The family name Iusupov is habitual in Kyrgyzstan, where it is a common surname, Azerbaijan, where it is quite a common surname, and Kazakhstan (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Russia, Kazakhstan, and Kyrgyzstan.