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Worldwide, Simko (Simko , Симко , Сімко ) is a rare largely boy's, but uncommonly feminine forename. The forename Simko is habitual in Slovakia, where it is a rare boy's name, Sweden, and Kyrgyzstan. Measured by absolute frequency, it is the most numerous in Iraq, Slovakia, and Sweden. Predominantly, Simko is the last name as well as the forename.