Tadashi

Tadashi (Kanji: 正, 禎, 忠, 荘, 匡史, 理 Hiragana: ただし), Japanese masculine name, may refer to :


 * Tadashi Abe (阿部 正), the first aikido master to live and teach in the west
 * Tadashi Agi (亜樹 直), Japanese manga story writer, novelist and screenwriter
 * Tadashi Hayashi (林 正), Japanese basketball coach
 * Tadashi Honda (本多 忠), Japanese swimmer
 * Tadashi Inuzuka (犬塚 直史), Japanese politician
 * Tadashi Iijima (飯島 正), Japanese film critic
 * Tadashi Irie (入江 禎), a Japanese yakuza boss
 * Tadashi Ishimine (伊志嶺 忠), baseball catcher for the Tohoku Rakuten Golden Eagles
 * Tadashi Kato (加藤 忠), Japanese cyclist
 * Tadashi Kawamata (川俣 正), a Japanese plasticist
 * Tadashi Kuranari (倉成 正), Japanese politician
 * Tadashi Lometo, Marshallese politician
 * Tadashi Matsuura (松浦忠史), Japanese musician and record producer better known as "Kisaki"
 * Tadashi Mihara (三原 正), Japanese boxer
 * Tadashi Miyazawa (宮澤 正), a Japanese voice actor
 * Tadashi Mori (森 正), Japanese conductor and flautist
 * Tadashi Munakata (宗像 政), Japanese politician
 * Tadashi Nakamura (disambiguation)
 * Tadashi Obara (小原 唯志), Japanese speed skater
 * Tadashi Ohtsuka (大束 忠司), Japanese badminton player
 * Tadashi Okamoto (岡本 正), Japanese boxer
 * Tadashi Saito (斎藤 直), Japanese rower
 * Tadashi Sasaki (disambiguation)
 * Tadashi Sato, American artist
 * Tadashi Sawamura (沢村 忠), Japanese kickboxer
 * Tadashi Shimada (嶋田 忠), Japanese photographer
 * Tadashi Shimizu (清水 忠史), Japanese communist politician
 * Tadashi Shimokawa (下川 禎), Japanese fencer
 * Tadashi Shoji, fashion designer
 * Tadashi Suetsugi (末次 忠司), a Japanese engineer
 * Tadashi Suzuki (鈴木 忠志), a theatrical director, writer
 * Tadashi Takamura (高村 規), Japanese photographer
 * Tadashi Wakabayashi (若林 忠志), Japanese/American baseball player
 * Tadashi Watanabe (渡辺 貞), Japanese computer engineer
 * Tadashi Yamamoto (1936–2012), Japanese internationalist
 * Tadashi Yamamoto (athlete) (山本 忠司), Japanese triple jumper
 * Tadashi Yamashita (山下 忠), Japanese American martial artist
 * Tadashi Yanada梁田 貞, Japanese composer
 * Tadashi Yanai (柳井 正), Japanese billionaire and richest man in Japan
 * Tadashi Yokouchi (横内 正), Japanese actor

Fictional characters

 * Tadashi Hamada, a character from Big Hero 6
 * Tadashi Karino (狩野 宙), a character from anime series S.A: Special A
 * Tadashi Yamaguchi (山口 忠), a character from Haikyuu with the position of middle blocker from Karasuno High