Kōichi, Koichi, Kouichi or Kohichi is a masculine Japanese given name.
Written forms Kōichi can be written using different kanji characters and can mean: 晃一, "clear, one" 幸一, "happiness, one" 光一, "light, one" 孝一, "filial piety, one" 弘一, "vast, one" 浩一, "abundance, one" 宏一, "wide, one" 恒一, "constancy, one" 耕一, "cultivate, one" 孝市, "filial piety, market" The name can also be written in hiragana (こういち) or katakana (コウイチ).
People with the name , Japanese baseball player Koichi Chigira (孝一, born 1959), Japanese anime director Koichi Domoto (born 1979), Japanese performing artist Kōichi Fukaura, Japanese shogi player Koichi Fukuda (born 1975), Japanese musician , Japanese economist , Japanese politician Koichi Iida ((飯田 鴻一, 1888–1973), Japanese businessman , Japanese golfer Koichi Ishii (浩一, born 1964), Japanese game designer Koichi Kato (LDP) (1939–2016), Japanese politician Koichi Kato (DPJ) (born 1964), Japanese politician Koichi Kawakita (1942–2014), Japanese special effects artist Kōichi Kido (1889–1977), Lord Keeper of the Privy Seal of Japan during World War II , Japanese shogi player Kōichi Kitamura (1931–2007), Japanese voice actor Kōichi Mashimo (born 1952), Japanese anime director , Japanese rower Koichi Mizushima (born 1965), Japanese gymnast , Japanese long-distance runner Koichi Morita (songwriter) , Japanese footballer , Japanese video game designer , former professional racing cyclist and ten-consecutive-time world champion in track cycling sprint Koichi Nishimura (born 1973), Japanese volleyball player , Japanese golfer Kōichi Sakaguchi (坂口 候一, born 1968), Japanese voice actor , Japanese actor , Japanese biathlete , Japanese footballer , Japanese philatelist , Japanese ski jumper , Japanese murderer , Japanese politician , Japanese bobsledder Koichi Sugiyama (こういち; birth name 浩一, 1931–2021), Japanese video game composer , Japanese baseball player and manager Koichi Tanaka (born 1959), Japanese Nobel Prize winner in chemistry , Japanese footballer and manager Koichi Tohei (1920–2011), Japanese aikido practitioner Kōichi Tokita (born 1961), Japanese manga artist Kōichi Tōchika (born 1971), Japanese voice actor Koichi Wakata (born 1963), Japanese astronaut Kōichi Yamadera (born 1961), Japanese voice actor Koichi Kobayashi (born 1952), Japanese Go player Koichi Morishita (born 1967), Japanese long-distance runner (born 1996), Japanese YouTuber and filmmaker
Fictional characters Kouichi Kimura, from the TV series Digimon Frontier Koichi Shido, from manga/anime Highschool of the Dead Kouichi Hayase, from manga/anime Linebarrels of Iron Koichi Hirose (広瀬康一), a character from the manga and anime series JoJo's Bizarre Adventure Koichi Zenigata, from Lupin III Koichi Hayama, from adult anime/game Moonlight Lady Koichi Hiramoto, from Wangan Midnight Koichi Kijima, from Wangan Midnight Kōichi Tanemura, a character from the anime/manga Hanasaku Iroha Kōichi Sakakibara, the main protagonist of the series Another Kōichi Sakakibara, a character from the tokusatsu Kamen Rider Ryuki Special: 13 Riders Koichi Kizakura, a character from the anime Danganronpa 3: The End of Hope's Peak High School Koichi Haimawari, a character from the manga Boku no Hero Academia Koichi Adachi, a character and main party member from the videogame Yakuza: Like a Dragon Koichi Nanase, a character from the anime Gundam Build Divers