UFC knockouts define careers and create legends in the octagon. From highlight-reel finishes to title-changing moments, these strikes have shaped the sport's history. Vote for your favorites to rank the greatest ever.
What counts: Best judged by impact, technique, and lasting legacy in UFC history. Round numbers are exact; significance and technique ratings are approximate.
Conor McGregor KO Jose Aldo (2015)▲ Rising
McGregor ended Aldo's nine-year unbeaten streak in just thirteen seconds with a precise left cross at UFC 194. The finish unified the featherweight title and launched McGregor into global stardom. It remains the fastest KO in UFC title-fight history.
Year: 2015Fighter: Conor McGregorOpponent: Jose AldoRound: 1Significance: 9.8/10Technique: 9.5/10
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Anderson Silva Front Kick KO Vitor Belfort (2011)▲ Rising
Silva landed a perfect front kick to Belfort's chin at UFC 126, dropping the former champion instantly. The strike became an instant highlight and showcased Silva's creativity at middleweight.
Year: 2011Fighter: Anderson SilvaOpponent: Vitor BelfortRound: 1Significance: 9.6/10Technique: 9.9/10
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Junior dos Santos KO Cain Velasquez (2011)▲ Rising
Dos Santos stunned Velasquez with a right hand at UFC on Fox 1, claiming the heavyweight title in the first minute. It marked the first UFC event on network television.
Year: 2011Fighter: Junior dos SantosOpponent: Cain VelasquezRound: 1Significance: 9.2/10Technique: 9/10
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Chuck Liddell KO Randy Couture (2005)▲ Rising
Liddell reclaimed the light heavyweight title with a series of punches that dropped Couture at UFC 52. The win cemented Liddell as the division's face during its mainstream rise.
Year: 2005Fighter: Chuck LiddellOpponent: Randy CoutureRound: 2Significance: 9.3/10Technique: 8.8/10
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Anthony Pettis KO Benson Henderson (2013)▲ Rising
Pettis won the lightweight title with a flying kick at UFC 164. The move became one of the most replayed moments in UFC history.
Year: 2013Fighter: Anthony PettisOpponent: Benson HendersonRound: 1Significance: 8.6/10Technique: 9.8/10
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Francis Ngannou KO Cain Velasquez (2019)▲ Rising
Ngannou ended Velasquez's comeback with a crushing uppercut at UFC 241. The knockout signaled the arrival of a new heavyweight era.
Year: 2019Fighter: Francis NgannouOpponent: Cain VelasquezRound: 1Significance: 8.9/10Technique: 8.7/10
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Israel Adesanya KO Paulo Costa (2020)▲ Rising
Adesanya dropped Costa with a left hook at UFC 253 to retain the middleweight title in dominant fashion. The finish underscored his striking precision against a powerful contender.
Year: 2020Fighter: Israel AdesanyaOpponent: Paulo CostaRound: 2Significance: 9/10Technique: 9.4/10
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Amanda Nunes KO Cris Cyborg (2019)
Nunes knocked out Cyborg in 39 seconds at UFC 232 to claim the featherweight title. The finish unified two divisions under one champion.
Year: 2019Fighter: Amanda NunesOpponent: Cris CyborgRound: 1Significance: 9.1/10Technique: 8.9/10
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Georges St-Pierre KO Matt Serra (2007)▲ Rising
St-Pierre avenged his only loss with a first-round TKO of Serra at UFC 69 to reclaim the welterweight title.
Year: 2007Fighter: Georges St-PierreOpponent: Matt SerraRound: 1Significance: 8.5/10Technique: 8.3/10
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Jon Jones Elbow KO Lyoto Machida (2011)
Jones defended his light heavyweight title with a spinning elbow that dropped Machida at UFC 140. The finish highlighted Jones' unorthodox striking and ended Machida's title hopes.
Year: 2011Fighter: Jon JonesOpponent: Lyoto MachidaRound: 2Significance: 9.4/10Technique: 9.7/10
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Kamaru Usman KO Jorge Masvidal (2021)
Usman dropped Masvidal with a left hand at UFC 261 to retain the welterweight title. The win solidified Usman's dominance.
Year: 2021Fighter: Kamaru UsmanOpponent: Jorge MasvidalRound: 2Significance: 8.4/10Technique: 8.2/10
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Michael Bisping KO Luke Rockhold (2016)
Bisping knocked out Rockhold in the first round at UFC 199 to win the middleweight title. The finish capped a long journey to the belt.
Year: 2016Fighter: Michael BispingOpponent: Luke RockholdRound: 1Significance: 8/10Technique: 7.8/10
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Dustin Poirier KO Conor McGregor (2021)▲ Rising
Poirier knocked out McGregor with a left hook at UFC 257, avenging an earlier loss. The finish shifted momentum in the lightweight division.
Year: 2021Fighter: Dustin PoirierOpponent: Conor McGregorRound: 2Significance: 8.8/10Technique: 8.5/10
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Robert Whittaker KO Yoel Romero (2019)▲ Rising
Whittaker defended his middleweight title with a flying knee and punches against Romero at UFC 225. The finish proved his elite striking against a dangerous opponent.
Year: 2019Fighter: Robert WhittakerOpponent: Yoel RomeroRound: 2Significance: 8.7/10Technique: 9.1/10
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Randy Couture KO Chuck Liddell (2003)
Couture reclaimed the light heavyweight title with punches against Liddell at UFC 43. The win started Couture's second reign.
Year: 2003Fighter: Randy CoutureOpponent: Chuck LiddellRound: 3Significance: 8.1/10Technique: 7.9/10
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Jose Aldo KO Urijah Faber (2010)
Aldo defended his featherweight title with a knee and punches against Faber at UFC 125. The finish highlighted Aldo's counter-striking.
Year: 2010Fighter: Jose AldoOpponent: Urijah FaberRound: 1Significance: 8/10Technique: 8.8/10
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Chris Weidman KO Anderson Silva (2013)
Weidman knocked out Silva with a left hook at UFC 162 to win the middleweight title. The upset ended Silva's long reign.
Year: 2013Fighter: Chris WeidmanOpponent: Anderson SilvaRound: 2Significance: 8.7/10Technique: 8.1/10
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Max Holloway KO Jose Aldo (2019)
Holloway knocked out Aldo in the third round at UFC 218 to retain the featherweight title. The finish came after a high-volume striking battle.
Year: 2019Fighter: Max HollowayOpponent: Jose AldoRound: 3Significance: 8.3/10Technique: 8.6/10
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Alexander Volkanovski KO Max Holloway (2019)▼ Falling
Volkanovski knocked out Holloway in the third round at UFC 245 to win the featherweight title. The finish ended Holloway's long title reign.
Year: 2019Fighter: Alexander VolkanovskiOpponent: Max HollowayRound: 3Significance: 8.2/10Technique: 8.3/10
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TJ Dillashaw KO Renan Barao (2014)
Dillashaw knocked out Barao in the fifth round at UFC 173 to win the bantamweight title. The comeback victory ended Barao's long reign.
Year: 2014Fighter: TJ DillashawOpponent: Renan BaraoRound: 5Significance: 7.9/10Technique: 8.4/10
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Derrick Lewis KO Travis Browne (2016)
Lewis knocked out Browne with a right hand at UFC 199. The finish became famous for Lewis's post-fight celebration.
Year: 2016Fighter: Derrick LewisOpponent: Travis BrowneRound: 2Significance: 7.5/10Technique: 7.6/10
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Valentina Shevchenko KO Jessica Eye (2019)▼ Falling
Shevchenko knocked out Eye with a spinning back kick at UFC 238 to retain the flyweight title. The finish showcased elite technique.
Year: 2019Fighter: Valentina ShevchenkoOpponent: Jessica EyeRound: 2Significance: 7.8/10Technique: 9.3/10
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Dan Henderson KO Michael Bisping (2009)
Henderson knocked out Bisping with a right hand at UFC 100 in the second round. The finish became legendary for Henderson's celebratory jump.
Year: 2009Fighter: Dan HendersonOpponent: Michael BispingRound: 2Significance: 8.2/10Technique: 8/10
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Jorge Masvidal KO Ben Askren (2019)▼ Falling
Masvidal knocked out Askren with a flying knee in five seconds at UFC 239. The finish set the record for fastest KO in UFC history.
Year: 2019Fighter: Jorge MasvidalOpponent: Ben AskrenRound: 1Significance: 8.3/10Technique: 9.2/10
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Leon Edwards KO Kamaru Usman (2022)▼ Falling
Edwards knocked out Usman with a head kick in the fifth round at UFC 278 to win the welterweight title. The dramatic finish came from behind on the scorecards.
Year: 2022Fighter: Leon EdwardsOpponent: Kamaru UsmanRound: 5Significance: 8.5/10Technique: 9/10
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Missing a few names that belong in the top ten, but the top three is basically right.
Wild that Conor McGregor KO Jose Aldo (2015) is winning this. Scroll down — the real answer is further down the board.
Somebody explain the Conor McGregor KO Jose Aldo (2015) votes to me. Genuinely. I want to understand.
Came for the argument, stayed for the comparison grid. The numbers settle half the fights here.
Voted, but this order is going to look very different in a month once more people find it.
Conor McGregor KO Jose Aldo (2015) at the top is the correct call and I'll die on this hill.