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Globally, বই (Boi , বই ) is quite a common gender-neutral forename. The first name বই is characteristic of Nigeria, where it is a rare gender-neutral name, Tanzania, and Italy, where it is a rare largely masculine, but seldom girly name. Measured by absolute frequency, it is commonest in Nigeria, India, and Indonesia. More prevalently, বই is the last name as well as the forename.
বই is also a name for the fictitious and mythical characters: .