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Worldwide, Chamnan (Chamnan , ชำนาญ, จำนันต์) is a rare primarily male, but scarcely female first name. The first name Chamnan is characteristic of Thailand, where it is a rare male name, Australia, where it is a very rare feminine name, and the United States, where it is an extremely rare unisex name. Measured by absolute frequency, it most frequently occurs in Thailand, the United States, and India. Likewise, Chamnan is the last name as well as the forename.