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In the world, 卡娅 (Kaia , 卡娅 ) is quite a rare mostly feminine, but seldom masculine first name. The first name 卡娅 is characteristic of Estonia, where it is quite a rare feminine name, Trinidad and Tobago, and Norway, where it is a rare girly name. Not in comparison with a country's population, it most frequently occurs in the United States, Indonesia, and China. Very seldom, 卡娅 is the last name as well as the forename.
卡娅 is also a name for the fictitious and mythical characters: Kaia Fosli , the theatrical character in the play "The Master Builder".