Ko

A KO is a knockout in various sports, such as boxing and martial arts.

K.O., Ko or Kō may also refer to:

Music

 * KO (musician), Canadian musician who plays a fusion of hip hop and folk music
 * K.O. (album), a 2021 album by Danna Paola
 * K.O (rapper), South African rapper Ntokozo Mdluli
 * Karen O (born 1978), lead singer of the rock group Yeah Yeah Yeahs
 * Kevin Olusola, American cellist, beatboxer and member of a cappella group Pentatonix
 * K.O. (song), a song by Pabllo Vittar
 * 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 Tamil action movie
 * Knight Online, a 2004 online role-playing game

Language

 * Ko language
 * Ko (kana), the romanization of the Japanese kana こ and コ
 * ISO 639-1 code for the Korean language

Surname

 * 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), a surname of Chinese Xu and customarily spelled as Ko

People

 * K.O (rapper) South African musician and businessman
 * KO (musician), Canadian musician who plays a fusion of hip hop and folk music
 * Ko Simpson (born 1983), professional American football player for the Buffalo Bills
 * Kevin Owens, Canadian professional wrestler

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

Science and technology

 * 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
 * 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

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

Other uses

 * The Coca-Cola Company, stock ticker symbol and corporate internet domain ko.com
 * Civic Coalition (Poland), or Koalicja Obywatelska (KO), a Polish electoral alliance
 * Knock-off, a counterfeit product
 * Kemetic Orthodoxy, a religion
 * Contracting Officer, US government acronym KO or CO
 * 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
 * Dukkha, the concept of unsatisfactoriness in Buddhism
 * 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
 * Momofuku Ko, a New York restaurant