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Cognomen Usein (اسين , Usein , Усеин ) , around the globe, is quite a rare last name. The cognomen Usein is characteristic of North Macedonia, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Kyrgyzstan. In absolute terms, it is commonest in North Macedonia, Nigeria, and Bulgaria. More frequently, Usein is the forename as well as the last name.