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In the world, Kayna (Kayna , Каина , كاينا ) is quite a rare epicene first name. The first name Kayna is characteristic of the Dominican Republic, where it is a rare female name, Brazil, where it is a rare mostly male, but uncommonly female name, and Morocco, where it is a rare epicene name. Measured by absolute frequency, it most frequently occurs in Brazil, Nigeria, and India. Also, Kayna is the last name as well as the forename.