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Last name Kasmin (Kasmin , Касмин , カスミン) , in the world, is quite a common surname. The cognomen Kasmin is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Indonesia, and Singapore, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and Russia. Likewise, Kasmin is the forename as well as the last name.