Around the world, ואניו (Vanio 
, ואניו 
) is quite a rare boy's forename. The forename ואניו is characteristic of Brazil, where it is quite a rare boy's name, Bulgaria, where it is a rare boy's name, and Italy. Not in comparison with a country's population, the name is most common in Brazil, Italy, and Angola. Much less frequently, ואניו is the last name as well as the forename.