KO is a knockout in various sports, such as boxing and martial arts. K.O., Ko or Kō may also refer to:
Arts and entertainment Music
K.O. (album), 2021, by Danna Paola Ko (soundtrack), for the 2011 Indian film (see below) by Harris Jayaraj "K.O." (song), by Pabllo Vittar "KO" (song), 2025, by NLE Choppa K.O., a 2008 album by Rize "K.O.", a 2004 song by Smujji
Other media Ko (Go), in the board game Go Ko (film), a 2011 Indian Tamil-language action film by K. V. Anand Knight Online, a 2004 online role-playing game K.O., protagonist in OK K.O.! Let's Be Heroes Ko Ukumori, a character in the air combat game The Sky Crawlers: Innocent Aces Knowledge Organization, an academic journal published by the International Society for Knowledge Organization
Business and organizations Alaska Central Express (IATA airline designator KO) Civic Coalition (Poland), or Koalicja Obywatelska (KO), a Polish electoral alliance or Civic Coalition (party), a Polish political party of the same name The Coca-Cola Company (stock ticker symbol KO and corporate internet domain ko.com) Kelly Oils Ltd, a fuels merchant in Northern Ireland Momofuku Ko, a New York restaurant
Language Ko language Ko (kana), the romanization of the Japanese kana こ and コ Korean language (ISO 639-1 code KO)
People
Musicians KO (musician), Canadian musician who plays a fusion of hip hop and folk music K.O (rapper), South African rapper Ntokozo Mdluli Karen O (born 1978), lead singer of the rock group Yeah Yeah Yeahs Karen Olivo, an American actor, theater educator, and singer Kevin Olusola, American cellist, beatboxer and member of a cappella group Pentatonix
Other people Kō Nakata (born 1960), Japanese Islamic scholar Ko Simpson (born 1983), professional American football player for the Buffalo Bills Kevin Owens, Canadian professional wrestler Yi Ko (died 1171), Korean military ruler Karen Olivo, an American actor, theater educator, and singer
Places Ko Mountain, the second-highest peak in the Sikhote-Alin Mountains of Russia Ko. Madhepura, Nepal, a village development committee Ko, Lamphun, Thailand, a village and subdistrict Kö, an urban boulevard in Düsseldorf, Germany Kosovo, sometimes represented by country code KO (but usually XK) Keio University, a university in Tokyo, Japan
Science and technology Mathematics, computing, and information science Knowledge organization, branch of information science Knowledge Organization, an academic journal published by the International Society for Knowledge Organization Kilooctet (computing), a unit of information or computer storage Loadable kernel module (file extension .ko) Real K-theory
Other technologies Ko, an ancient Chinese weapon also known as a dagger-axe in English Kō, a version of the foot plough used by the Māori people Gene knockout, a molecular biology genetic technique, abbreviated KO
Religion Kemetic Orthodoxy Dukkha, the concept of unsatisfactoriness in Buddhism
Surnames Ko (Korean surname) Gao (surname), a surname of Chinese origin romanized to Ko in Hong Kong, and in several romanizations especially in South-east Asia Ke (surname), a Chinese surname romanized as "Ko" in the Wade–Giles system Xu (surname 許), a surname of Chinese romanized as Ko in the Teochew
Transportation Kō Station (Aichi) on the Meitetsu Nagoya Main Line in Japan Kō Station (Tokushima) on the Tokushima Line in Japan Alaska Central Express, IATA airline designator Railway line prefix KO of Keio lines
Other uses Knock-off, a counterfeit product Knockout, in various sports Contracting Officer, US government acronym KO or CO Kick-off (association football), the time or manner of start of play Kō, Japanese for incense; see Japanese incense Kōdō, the art of appreciating Japanese incense
See also
TKO (disambiguation) Kayo (disambiguation) Knockout (disambiguation) K0 (disambiguation) Kou (disambiguation) Gong (disambiguation), called Ko in Japanese