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All over the world, Mío (Mio , Meus , Mío ) is quite a rare gender-neutral first name. The first name Mío is habitual in Macao, where it is quite a common female name, Hong Kong, where it is quite a rare unisex name, and Puerto Rico, where it is quite a rare feminine name. Not in comparison with a country's population, it is the most numerous in Indonesia, Japan, and Italy. More prevalently, Mío is the last name as well as the forename.
Mío is also a name for the fictitious and mythical characters: Mio Akiyama , the fictional character from K-On!; Mio Mizukoshi , the fictional character from Ryūō no Oshigoto! and Mio , the fictional character appearing in the movie « Kamataki ».