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Worldwide, เคย์ (Khe , เคย์ , Kayie ) is quite a rare epicene first name. The forename เคย์ is habitual in Algeria, where it is quite a rare gender-neutral name, Tunisia, where it is a rare boy's name, and Indonesia, where it is a rare epicene name. In absolute terms, this name is the most popular in India, Algeria, and Indonesia. Likewise, เคย์ is the last name as well as the forename.
เคย์ is also a name for the fictitious and mythical characters: .