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All over the world, ใน (In , Nai , ใน ) is a common unisex first name. The first name ใน is habitual in Eastern Asia, particularly Japan, where it is quite a rare mostly boy's, but seldom girly name, South Korea, where it is quite a rare epicene name, and Mongolia. Measured by absolute frequency, it most frequently occurs in India, Japan, and Indonesia. Likewise, ใน is the last name as well as the forename.
ใน is also a name for the fictitious and mythical characters: In the Ear , the operatic character in the opera Cyberiada by Krzysztof Meyer; a miniature computer.
จะโลนา, โตดประโคน, บุษบา, รักสะโบะ, and เรืองไรโกเมน