Tadashi

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

Tadashi Abe (阿部正; 1926-1984), the first aikido master to live and teach in the west
Tadashi Abe (rower) (阿部肇; born 1963), Japanese rower
Tadashi Agi (亜樹直; 1962-), Japanese manga story writer, novelist and screenwriter
Tadashi Asai (浅井正; 1935–1990), Japanese wrestler
Tadashi Ehara, Japanese game designer
Tadashi Endo (1947–2025), Japanese butoh dancer
Tadashi Fukami, Japanese-American ecologist
Tadashi Fukushima (equestrian) (福島正; born 1944), Japanese equestrian
Tadashi Fukushima (runner) (福島正; born 1964), Japanese retired long-distance runner
Tadashi Funaoka (舟岡正; born 1932), Japanese sailor
Tadashi Hanaya (花谷正; 1894–1957), Japanese general in the Imperial Japanese Army
Tadashi Hattori (服部匡志; born 1964), Japanese ophthalmologist
Tadashi Hayashi (林正; born 1962), Japanese basketball coach
Tadashi Honda (本多忠; born 1951), Japanese former backstroke swimmer
Tadashi Horikoshi (堀越信司; born 1988), Japanese Paralympic athlete
Tadashi Hoshino (星野直志), Japanese paralympic athlete
Tadashi Hyōdō (兵頭精; 1899–1980), first Japanese woman to gain a pilot's licence
Tadashi Iijima (飯島正; 1902–1996), Japanese film critic
Tadashi Ikeda (池田正; born 1949), Japanese sailor
Tadashi Imai (今井正; 1912–1991), Japanese film director
Tadashi Inuzuka (犬塚直史; 1954-), Japanese politician
Tadashi Irie (入江禎; born 1944), a Japanese yakuza boss
Tadashi Ishimine (伊志嶺忠; 1985-), baseball catcher for the Tohoku Rakuten Golden Eagles
Tadashi Kaminagai (上永井正; 1899-1982), Japanese painter, draftsman and mold maker
Tadashi Kanehisa (金久正; 1906–1997), Japanese folklorist and linguist
Tadashi Kaneko (兼子正; 1912–1942), Japanese officer, ace fighter pilot, and leader in the Imperial Japanese Navy
Tadashi Katakura (片倉衷; 1898–1991), Japanese general in the Imperial Japanese Army
Tadashi Kato (加藤忠; born 1935), Japanese cyclist
Tadashi Kawamata (川俣正; born 1953), a Japanese plasticist
Tadashi Kawashima (河島正; 1969–2010), Japanese manga artist
Tadashi Kitta (橘田規; 1934–2003), Japanese professional golfer
Tadashi Kodaira (小平忠; 1915–2000), Japanese politician
Tadashi Koya (小屋禎; born 1970), Japanese former football player
Tadashi Kume (久米是志; 1931–2022), Japanese businessman
Tadashi Kuranari (倉成正; 1918-1996), Japanese politician
Tadashi Lometo, Marshallese politician
Tadashi Maeda (admiral) (前田精; 1898–1977), Japanese high-ranking Imperial Japanese Navy officer
Tadashi Maeda (banker) (前田匡史; born 1957), Japanese governor
Tadashi Maeda (politician) (前田正; 1946–2013), Japanese politician
Tadashi Maeyama (前山忠; born 1944), Japanese artist
Tadashi Mamiya (間宮正; 1911–1984), Japanese painter
Tadashi Matsuura (松浦忠史; born 1976), Japanese musician and record producer better known as "Kisaki"
Tadashi Mihara (三原正; born 1955), Japanese boxer
Tadashi Miyazawa (宮澤正; born 1955), a Japanese voice actor
Tadashi Mori (森正; 1921-1987), Japanese conductor and flautist
Tadashi Munakata (宗像政; 1854–1918), Japanese politician
Tadashi Murakami (村上正), Japanese mixed martial artist
Tadashi Murakami (athlete) (村上正; 1912–????), Japanese hurdler
Tadashi Nagano (長野正; 1930–2017), Taiwanese-born Japanese mathematician
Tadashi Nakamura (biathlete) (中村忠; born 1956), Japanese biathlete
Tadashi Nakamura (filmmaker) (born 1980), American documentary filmmaker
Tadashi Nakamura (footballer) (中村忠; born 1971), Japanese former football player and manager
Tadashi Nakamura (martial artist) (中村忠; born 1942), Japanese karateka
Tadashi Nakamura (voice actor) (中村正; 1929–2019), Japanese actor, voice actor and narrator
Tadashi Nakayama (artist) (中山正; 1927–2014), Japanese woodblock print artist
Tadashi Nakayama (mathematician) (中山正; 1912–1964), Japanese mathematician
Tadashi Negishi (1912–1985), Japanese rower
Tadashi Nishimatsu, Japanese hairstylist
Tadashi Obara (小原唯志; born 1983), Japanese speed skater
Tadashi Ogasahara (小笠原唯志; born 1969), Japanese football manager
Tadashi Ogasawara (小笠原嘉; born 1955), Japanese former cyclist
Tadashi Ohtsuka (大束忠司; 1978-), Japanese badminton player
Tadashi Ōishi (大石直嗣; born 1989), Japanese professional shogi player
Tadashi Okamoto (岡本正; born 1947), Japanese boxer
Tadashi Saito (斎藤直; born 1938), Japanese rower
Tadashi Sasaki (banker) (佐々木直; 1907–1988), Japanese central banker
Tadashi Sasaki (engineer) (佐々木正; 1915–2018), Japanese engineer
Tadashi Sasaki (musician) (born 1943), Japanese classical guitarist
Tadashi Sato (佐藤正; 1923–2005), American artist
Tadashi Satō (politician) (佐藤正; 1849–1920), Japanese Army officer and politician
Tadashi Sawamura (沢村忠; 1943–2021), Japanese kickboxer
Tadashi Sawashima (沢島忠; 1926–2018), Japanese film director and theatre director
Tadashi Settsu (攝津正; born 1982), Japanese baseball player
Tadashi Shimada (嶋田忠; born 1949), Japanese photographer
Tadashi Shimijima (霜島正; 1912–????), Japanese rower
Tadashi Shimizu (清水忠史; born 1968), Japanese communist politician
Tadashi Shimokawa (下川禎; born 1962), Japanese fencer
Tadashi Shoji (タダシショージ; born 1948), American-based Japanese fashion designer
Tadashi Suetsugi (末次忠司; born 1958), Japanese academic, civil engineer and writer
Tadashi Sugiura (杉浦忠; 1935–2001), Japanese Nippon Professional Baseball player
Tadashi Sugiyama (杉山直; born 1959), Japanese video game designer and producer
Tadashi Sumiyoshi (住吉正; 1893–1976)), Japanese major general in the Imperial Japanese Army
Tadashi Suzuki (鈴木忠志; born 1939), Japanese avant-garde theatre director, writer and philosopher
Tadashi Takamura (高村規; 1933-2014), Japanese photographer
Tadashi Takayanagi (高柳匡; born 1975), Japanese theoretical physicist
Tadashi Takeda (竹田忠嗣; born 1986), Japanese former professional football player
Tadashi Tokieda (時枝正; born 1968), Japanese mathematician
Tadashi Tomori (友利正; born 1959), Japanese retired boxer
Tadashi Ushijima (牛嶋正; 1931–2024), Japanese economist and politician
Tadashi Wakabayashi (若林忠志; 1908–1965), Japanese/American baseball player
Tadashi Watanabe (渡辺貞; born 1944), Japanese computer engineer
Tadashi Yamamoto (山本正; 1936–2012), Japanese internationalist
Tadashi Yamamoto (athlete) (山本忠司; 1925–1998), Japanese triple jumper
Tadashi Yamashina (山科忠; born 1951), Japanese former Team Principal of the Toyota Racing Formula One
Tadashi Yamashita (山下忠; born 1941), Japanese American martial artist
Tadashi Yanada (梁田貞; 1883–1959), Japanese composer
Tadashi Yanai (柳井正; born 1949), Japanese billionaire and richest man in Japan
Tadashi Yokouchi (横内正; born 1941), Japanese actor
Tadashi Yoyogi (代々木忠; born 1938), Japanese director

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