Knockout (disambiguation)

A knockout, in several sports, is a strike that renders an opponent unable to continue fighting.

Knockout may also refer to:

Sports and games

Knockout (game), a basketball-related activity
Knock Out (Gottlieb pinball), a 1950 pinball machine
Knock Out (kickboxing), a Japanese kickboxing promotion
Knock Out (tabletop game), a tabletop game by the Milton Bradley Company
"TNA Knockout", a term used by Total Nonstop Action Wrestling to refer to its female talent
Technical knockout, a knockout called by an official for safety
Knockout system
- Knockout tournament, a single-elimination tournament
Knockout Cup (speedway), a British motorcycle speedway competition

Knockout (UK comics), either of two British comic books
Knockout (DC Comics), a comic book character
Knock Out (Transformers: Prime), a fictional robot supervillain turned superhero
Knockout, a Femme Fatales comics character

Knock-Out (novel), a Bulldog Drummond novel
Knockout: Interviews with Doctors Who Are Curing Cancer – And How to Prevent Getting It in the First Place, a book by Suzanne Somers

Knockout Entertainment, an American record label
Knock Out (Bonfire album) (1991), album by the hard rock band Bonfire
"Knockout" (Triple 8 song) (2003), a song by the British pop/rock group Triple 8
- "Twins (Knock Out)", a cover version by Super Junior
"Knockout" (Lil Wayne song) (2010), song by Lil Wayne from his album Rebirth
"K.O." (Pabllo Vittar song) (2017), song by Pabllo Vittar from her album Vai Passar Mal
TKO (The Knock Out), 2018 album by Mya
Knock Out!, a 1981 album by Toots and the Maytals
"Knockout" (Bon Jovi song), song from 2016 album This House Is Not for Sale
"Knock Out" (GD & TOP song), 2011 song by GD & TOP for their self-entitled album
"Knockout" (2019), a song by Martin Tungevaag

The Knockout, a 1914 Keystone Studios film with Fatty Arbuckle and Charlie Chaplin.
The Knockout (1923 film), a 1923 British silent sports film directed by Alexander Butler
The Knockout (1925 film), a silent drama directed by Lambert Hillyer
Knockout (1935 film), a German sports film
Knockout (1941 film), a 1941 American drama directed by William Clemens
Knock Out (1943 film), a 1943 Italian crime film directed by Carmine Gallone
Knockout (2000 film), an American film about a female boxer
Knock Out (2010 film), an Indian Hindi-language action-thriller film
Knockout (2011 film) or Born to Fight, a Canadian film
Haywire (2011 film) or Knockout, a 2011 American film
Knockout (game show), a 1977–78 NBC series hosted by Arte Johnson
Knockout (Indonesian TV series), a game show
The Knockout (Chinese TV series), a 2023 Chinese TV series directed by Xu Jizhou