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Last name Khusain (Хусаин , Хусайн , Khusain ) , all over the world, is a rare cognomen. The cognomen Khusain is habitual in Kyrgyzstan, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan. Not in comparison with a country's population, it is the most numerous in Indonesia, Russia, and Kyrgyzstan. More prevalently, Khusain is the forename as well as the last name.