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In all the world, Kaia (Kaia , Кайа , Кайя ) is quite a rare epicene given name. The given name Kaia is characteristic of Estonia, where it is quite a rare feminine name, Trinidad and Tobago, and Norway, where it is a rare girly name. Measured by absolute frequency, the name is most common in the United States, Indonesia, and India. Likewise, Kaia is the last name as well as the forename.
Kaia is also a name for the fictitious and mythical characters: Kaia Fosli , the theatrical character in the play "The Master Builder".