Tetsu is a masculine Japanese given name. Notable people with the name include:Tetsu Iida , Japanese photographer Tetsu Inada , Japanese voice actor Tetsu Inoue (テツ・イノウエ), Japanese musician Tetsu Katayama , Japanese politician and Prime Minister of Japan Tetsu Komai , Japanese-American actor Tetsu Nagasawa , Japanese footballer and manager Tetsu Nakamura (disambiguation), multiple people Tetsu Nishikawa , Japanese golfer Tetsu Sawaki , Japanese actor Tetsu Shiratori , Japanese voice actor Tetsu Sugiyama , Japanese footballer Tetsu Takano , Japanese musician Tetsu Watanabe , Japanese actor Tetsu Yamato , Japanese footballer Tetsu Yamauchi , real name Tetsuo Yamauchi, Japanese musician Tetsu Yano , Japanese science fiction translator and writer Tetsushi Mizokami, Japanese founder of Uncle Tetsu's Cheesecake Tetsuya (musician), formerly known as Tetsu, a musician