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Across the world, Вадя (Vadya , Vadia , Vadja ) is quite a rare epicene first name. The forename Вадя is characteristic of Indonesia, where it is a rare girly name, Israel, where it is a rare gender-neutral name, and India. Not in comparison with a country's population, the name is most common in India, Indonesia, and the United States. Likewise, Вадя is the last name as well as the forename.