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Across the world, Naisan (Naisan , นัยสันต์ ) is a rare epicene forename. The first name Naisan is habitual in Cyprus, where it is quite a rare boy's name, Thailand, where it is a very rare epicene name, and Indonesia, where it is a very rare male name. In absolute terms, it is the most numerous in Indonesia, India, and Thailand. Likewise, Naisan is the last name as well as the forename.