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Last name Seyfullin (Сейфуллин , Seyfullin ) , all over the world, is a rare cognomen. The cognomen Seyfullin is habitual in Kazakhstan, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Kyrgyzstan. Measured by absolute frequency, it most frequently occurs in Kazakhstan, Russia, and Bulgaria. Very seldom, Seyfullin is the forename as well as the last name.