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Family name Тэцуя (Tetsuya , Тэцуя ) , across the world, is quite a rare surname. The last name Тэцуя is habitual in Japan, where it is quite a rare surname, Singapore, where it is a rare surname, and Indonesia. Measured by absolute frequency, it is the most numerous in Japan, China, and Indonesia. Likewise, Тэцуя is the forename as well as the last name.