Tadashi (Kanji: 正, 禎, 忠, 荘 Hiragana: ただし), Japanese masculine name, may refer to :
Tadashi Abe (1926-1984), the first aikido master to live and teach in the west
Tadashi Agi (1962-), Japanese manga storywriter, novelist and screenwriter
Tadashi Hattori (1908-2008), a Japanese composer
Tadashi Inuzuka
Tadashi Irie, a Japanese yakuza boss
Tadashi Ishimine, baseball catcher for the Tohoku Rakuten Golden Eagles
Tadashi Kawamata, a Japanese plasticist
Tadashi Kuranari (1918-1996)
Tadashi Miyazawa, a Japanese voice actor
Tadashi Mori (1921-1987)
Tadashi Nakamura (disambiguation)
Tadashi Ohtsuka (1978-)
Tadashi Sasaki (disambiguation)
Tadashi Sato
Tadashi Sawamura (1943-)
Tadashi Shimada (1949-)
Shoji Tadashi, fashion designer
Tadashi Suetsugi, a Japanese engineer
Tadashi Suzuki, a theatrical director, writer
Tadashi Takamura (1933-)
Tadashi Wakabayashi
Tadashi Yamashita (1942-), American martial artist
Tadashi Yanai (1949-)
Tadashi Yokouchi
Fictional characters:
Tadashi Hamada, a fictional character from Big Hero 6
Tadashi Karino, a fictional character from anime series S.A: Special A
