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In all the world, Siika (Sik , Сийка , Siika ) is quite a common epicene first name. The first name Siika is habitual in Bulgaria, where it is quite a common girly name, Taiwan, where it is quite a rare gender-neutral name, and South Korea, where it is a rare masculine name. Not in comparison with a country's population, it is the most numerous in Bulgaria, India, and Taiwan. Also, Siika is the last name as well as the forename.