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Globally, สิทธ (Sit , Siddh , Sithonh ) is a common epicene first name. The forename สิทธ is habitual in Macao, where it is quite a common unisex name, Hong Kong, where it is quite a rare epicene name, and India, where it is a rare epicene name. Measured by absolute frequency, it most frequently occurs in India, Indonesia, and Hong Kong. Likewise, สิทธ is the last name as well as the forename.
สิทธ is also a name for the fictitious and mythical characters: .