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Globally, 歐 (Au , Eo , Aall ) is a common gender-neutral forename. The forename 歐 is characteristic of Hong Kong, where it is quite a common gender-neutral name, Iceland, where it is quite a rare feminine name, and Mauritius. Not in comparison with a country's population, the name is most common in China, Hong Kong, and India. Likewise, 歐 is the last name as well as the forename.
歐 is also a name for the fictitious and mythical characters: Eo , the operatic character in the opera Klothó – Thread of the Tales.