Tetsu (written: 哲, 徹, 鉄 or テツ in katakana) is a masculine Japanese given name. Notable people with the name include:
, Japanese photographer , Japanese voice actor , Japanese musician , Japanese politician and Prime Minister of Japan , Japanese-American actor , Japanese footballer and manager Tetsu Nakamura (中村 哲, 1946–2019), Japanese physician Tetsu Nakamura (actor) (中村 哲, 1909–1992), Japanese film actor and opera singer , Japanese golfer , Japanese actor , Japanese voice actor , Japanese footballer , Japanese musician , Japanese actor , real name Tetsuo Yamauchi, Japanese musician , Japanese science fiction translator and writer Tetsushi Mizokami (born 1948), Japanese founder of Uncle Tetsu's Cheesecake Tetsuya (musician) (born 1969), formerly known as Tetsu, a musician
See also Tetsuzō Iwamoto (1916–1955), Sub-Lieutenant fighter plane ace during World War II Tetsu (railfan) - Short for tetsudōfan (鉄道ファン), literally "railway fan" in Japanese.