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Family name Kosymov (Косимов , Косымов , Kosymov ) , in all the world, is a common cognomen. The last name Kosymov is habitual in Kyrgyzstan, where it is quite a common surname, Tajikistan, where it is quite a rare surname, and Azerbaijan. Measured by absolute frequency, this name is the most popular in Russia, Kyrgyzstan, and Tajikistan. Very seldom, Kosymov is the forename as well as the last name.