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Across the world, Jania (Jania , Жания , Жанья ) is a common primarily feminine, but very seldom boy's forename. The first name Jania is habitual in Kazakhstan, where it is quite a common feminine name, Nicaragua, where it is quite a rare girly name, and Puerto Rico. Measured by absolute frequency, it is the most numerous in Kazakhstan, Brazil, and Indonesia. Much less frequently, Jania is the last name as well as the forename.