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Last name Perman (ถาวร , Perman , Перман ) , in all the world, is a common surname. The last name Perman is habitual in Dominica, where it is quite a common surname, Thailand, and Sweden, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Thailand, the United States, and Indonesia. More frequently, Perman is the forename as well as the last name.