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All over the world, アイナ (Aina , アイナ ) is a widespread unisex first name. The first name アイナ is characteristic of Sub-Saharan Africa, particularly Madagascar, where it is a common predominantly feminine, but scarcely masculine name, Namibia, where it is quite a common girly name, and Nigeria, where it is quite a common gender-neutral name (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Nigeria, Madagascar, and Indonesia. Also, アイナ is the last name as well as the forename.
アイナ is also a name for the fictitious and mythical characters: Ina Meier and Aina Inkeri Ankeinen , character in Putous.