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Cognomen Hasanjan (Хасанжан , Hasanjan , Хасанян ) , around the world, is a rare last name. The cognomen Hasanjan is characteristic of Kyrgyzstan, where it is a rare surname, Norway, where it is a very rare surname, and Russia. In absolute terms, it is the most numerous in Russia, Kyrgyzstan, and India. More prevalently, Hasanjan is the forename as well as the last name.