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Last name Aru (Aru , Ару , アル ) , in all the world, is a common family name. The family name Aru is characteristic of Vanuatu, where it is a common surname, Estonia, where it is quite a common surname, and Maldives, where it is quite a rare surname. In absolute terms, this name is the most popular in India, Italy, and Indonesia. Also, Aru is the forename as well as the last name.