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Worldwide, ベイ (Bei , Bay , Bey ) is a common gender-neutral first name. The first name ベイ is characteristic of Tunisia, where it is quite a rare epicene name, Mongolia, and Macao, where it is quite a rare girly name. In absolute terms, it is the most numerous in Indonesia, Pakistan, and Algeria. More prevalently, ベイ is the last name as well as the forename.
ベイ is also a name for the fictitious and mythical characters: Bay Ganyo , the fictional character.