{{Infobox given name | name = Kōichi | image = | image_size = | caption = | pronunciation = {{IPA|ja|koː.itɕi|}} | gender = | meaning = | region = | language = | origin = Japanese | alternative spelling = Kōichi<br/>Kouichi<br/>Kohichi | nickname = | variant forms = | related names = Hiroshi<br/>Koji | name day = | derived = | popularity = | footnotes = | wikt = }} '''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== *{{Nihongo|Kohichi Amano|天野 浩一||born 1979}}, 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 *{{Nihongo|Koichi Hamada (economist)|浜田 宏一||born 1936}}, Japanese economist *{{Nihongo|Kōichi Hamada|浜田 幸一||1928–2012}}, Japanese politician *Koichi Iida ((飯田 鴻一, 1888–1973), Japanese businessman *{{Nihongo|Kouichi Inoue|井上 幸一||born 1946}}, 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 *{{Nihongo|Kōichi Kinoshita|木下 浩一||born 1967}}, Japanese shogi player * Kōichi Kitamura (1931–2007), Japanese voice actor * Kōichi Mashimo (born 1952), Japanese anime director *{{Nihongo|Koichi Miyano|宮野 洪一||born 1942}}, Japanese rower * Koichi Mizushima (born 1965), Japanese gymnast *{{Nihongo|Kōichi Morishita|森下 広一||born 1967}}, Japanese long-distance runner * Koichi Morita (songwriter) *{{Nihongo|Koichi Murata|村田 航一||born 1996}}, Japanese footballer *{{Nihongo|Koichi Nakamura|中村 光一||born 1964}}, Japanese video game designer *{{Nihongo|Koichi Nakano|中野 浩一||born 1955}}, former professional racing cyclist and ten-consecutive-time world champion in track cycling sprint * Koichi Nishimura (born 1973), Japanese volleyball player *{{Nihongo|Koichi Ono|小野 光一||1919–2000}}, Japanese golfer * Kōichi Sakaguchi (坂口 候一, born 1968), Japanese voice actor *{{Nihongo|Kōichi Satō (actor)|佐藤 浩市||born 1960}}, Japanese actor *{{Nihongo|Koichi Sato (biathlete)|佐藤 幸一||born 1956}}, Japanese biathlete *{{Nihongo|Koichi Sato (footballer)|佐藤 洸一||born 1986}}, Japanese footballer *{{Nihongo|Koichi Sato (philatelist)|佐藤 浩一}}, Japanese philatelist *{{Nihongo|Koichi Sato (ski jumper)|佐藤 耕一||born 1931}}, Japanese ski jumper *{{Nihongo|Koichi Shoji|庄司浩一||1955–2019}}, Japanese murderer *{{Nihongo|Kōichi Sueyoshi|末吉興一||1934–2025}}, Japanese politician *{{Nihongo|Koichi Sugawara|菅原 貢一||born 1950}}, Japanese bobsledder * Koichi Sugiyama (こういち; birth name 浩一, 1931–2021), Japanese video game composer *{{Nihongo|Kōichi Tabuchi|田淵 幸一||born 1946}}, Japanese baseball player and manager * Koichi Tanaka (born 1959), Japanese Nobel Prize winner in chemistry *{{Nihongo|Koichi Togashi|冨樫 剛一||born 1971}}, 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 *{{Nihongo|KouichiTV|コウイチTV}} (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''
{{given name}} {{DEFAULTSORT:Koichi}} Category:Japanese masculine given names Category:Masculine given names