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Globally, テツヤ (Tetsuya , テツヤ , Tetuya ) is quite a rare masculine forename. The given name テツヤ is habitual in Japan, where it is quite a rare masculine name, Guatemala, where it is a rare masculine name, and Indonesia, where it is a very rare masculine name. Not in comparison with a country's population, it is the most numerous in Japan, China, and Indonesia. More prevalently, テツヤ is the last name as well as the forename.
テツヤ is also a name for the fictitious and mythical characters: Tetsuya Kuroko , the basketball player, Kuroko's Basketball; Tetsuya Tsurugi , character in Great Mazinger; Tetsuya II , the fictional dog from Kuroko's Basketball and Tetsuya Watarigani .