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Throughout the world, Bī (Bi , Bī , Bygrave ) is a common unisex given name. The first name Bī is habitual in Algeria, where it is quite a common epicene name, Macao, and Tunisia, where it is quite a common dominantly boy's, but seldom feminine name. In absolute terms, it most frequently occurs in India, Pakistan, and Algeria. More prevalently, Bī is the last name as well as the forename.
Bī is also a name for the fictitious and mythical characters: .