The fastest knockout in UFC bantamweight history is Ken Stone vs Erik Perez, at 17 seconds, at UFC 150: Henderson vs Edgar II on 11 August 2012.
| # | Time | Bout | Result | Ended | Date | Event |
|---|---|---|---|---|---|---|
| 1 | 0:17 | Ken Stone vs Erik Perez | Erik Perez · KO/TKO | R1 0:17 | 2012-08-11 | UFC 150: Henderson vs Edgar II |
| 2 | 0:18 | Montel Jackson vs Da'Mon Blackshear | Montel Jackson · KO/TKO | R1 0:18 | 2024-07-13 | UFC Fight Night: Namajunas vs. Cortez |
| 3 | 0:19 | Payton Talbott vs Yanis Ghemmouri | Payton Talbott · KO/TKO | R1 0:19 | 2024-06-29 | UFC 303: Pereira vs. Prochazka 2 |
| 4 | 0:21 | Francisco Rivera vs Alex Caceres | Francisco Rivera · KO/TKO | R1 0:21 | 2015-06-06 | UFC Fight Night: Boetsch vs Henderson |
| 5 | 0:21 | Cody Gibson vs Aoriqileng | Aoriqileng · KO/TKO | R1 0:21 | 2025-10-18 | UFC Fight Night: De Ridder vs. Allen |
| 6 | 0:22 | Joseph Sandoval vs Nick Denis | Nick Denis · KO/TKO | R1 0:22 | 2012-01-20 | UFC on FX: Guillard vs Miller |
| 7 | 0:25 | Vaughan Lee vs Iuri Alcantara | Iuri Alcantara · KO/TKO | R1 0:25 | 2014-05-31 | — |
| 8 | 0:25 | Boston Salmon vs Khalid Taha | Khalid Taha · KO/TKO | R1 0:25 | 2019-04-13 | UFC 236: Holloway vs. Poirier 2 |
| 9 | 0:28 | Cory Sandhagen vs Frankie Edgar | Cory Sandhagen · KO/TKO | R1 0:28 | 2021-02-06 | UFC Fight Night: Overeem vs. Volkov |
| 10 | 0:32 | Tyson Nam vs Zarrukh Adashev | Tyson Nam · KO/TKO | R1 0:32 | 2020-06-13 | UFC Fight Night: Eye vs. Calvillo |
| 11 | 0:33 | Jimmie Rivera vs Marlon Moraes | Marlon Moraes · KO/TKO | R1 0:33 | 2018-06-01 | UFC Fight Night: Rivera vs. Moraes |
| 12 | 0:37 | John Dodson vs Manvel Gamburyan | John Dodson · KO/TKO | R1 0:37 | 2016-04-16 | UFC on FOX: Teixeira vs Evans |
| 13 | 0:38 | Johnny Bedford vs Cody Gibson | Cody Gibson · KO/TKO | R1 0:38 | 2014-06-28 | — |
| 14 | 0:41 | Journey Newson vs Randy Costa | Randy Costa · KO/TKO | R1 0:41 | 2020-09-19 | UFC Fight Night: Covington vs. Woodley |
| 15 | 0:46 | Urijah Faber vs Ricky Simon | Urijah Faber · KO/TKO | R1 0:46 | 2019-07-13 | UFC Fight Night: De Randamie vs. Ladd |
| 16 | 0:47 | Alatengheili vs Kevin Croom | Alatengheili · KO/TKO | R1 0:47 | 2022-04-16 | UFC Fight Night: Luque vs. Muhammad |
| 17 | 0:48 | Cody Garbrandt vs Takeya Mizugaki | Cody Garbrandt · KO/TKO | R1 0:48 | 2016-08-20 | UFC 202: Diaz vs. McGregor 2 |
| 18 | 0:50 | Batgerel Danaa vs Kevin Natividad | Batgerel Danaa · KO/TKO | R1 0:50 | 2021-04-24 | UFC 261: Usman vs. Masvidal 2 |
| 19 | 0:51 | Said Nurmagomedov vs Mark Striegl | Said Nurmagomedov · KO/TKO | R1 0:51 | 2020-10-17 | UFC Fight Night: Ortega vs. The Korean Zombie |
| 20 | 0:54 | Raul Rosas Jr. vs Terrence Mitchell | Raul Rosas Jr. · KO/TKO | R1 0:54 | 2023-09-16 | UFC Fight Night: Grasso vs. Shevchenko 2 |
| 21 | 0:56 | Michael McDonald vs Alex Soto | Michael McDonald · KO/TKO | R1 0:56 | 2011-11-19 | UFC 139: Shogun vs Henderson |
| 22 | 0:59 | Eddie Wineland vs Cody Stamann | Cody Stamann · KO/TKO | R1 0:59 | 2022-06-18 | UFC Fight Night: Kattar vs. Emmett |
| 23 | 1:00 | Xiao Long vs Francesco Nuzzigraded call | Francesco Nuzzi · KO/TKO | R1 1:00 | 2026-08-29 | UFC Fight Night: Nurmagomedov vs. Song |
| 24 | 1:01 | Dominick Cruz vs Takeya Mizugaki | Dominick Cruz · KO/TKO | R1 1:01 | 2014-09-27 | UFC 178: Johnson vs Cariaso |
| 25 | 1:02 | Rinya Nakamura vs Nathan Fletcher | Rinya Nakamura · KO/TKO | R1 1:02 | 2025-08-02 | UFC Fight Night: Taira vs. Park |
| 26 | 1:04 | Aiemann Zahabi vs Aoriqileng | Aiemann Zahabi · KO/TKO | R1 1:04 | 2023-06-10 | UFC 289: Nunes vs. Aldana |
| 27 | 1:04 | Brad Katona vs Bekzat Almakhan | Bekzat Almakhan · KO/TKO | R1 1:04 | 2025-05-10 | UFC 315: Muhammad vs. Della Maddalena |
| 28 | 1:06 | Iuri Alcantara vs Joe Soto | Iuri Alcantara · KO/TKO | R1 1:06 | 2018-02-03 | UFC Fight Night: Machida vs. Anders |
| 29 | 1:07 | Marlon Moraes vs Aljamain Sterling | Marlon Moraes · KO/TKO | R1 1:07 | 2017-12-09 | UFC Fight Night: Swanson vs. Ortega |
| 30 | 1:08 | Johnny Munoz vs Tony Gravely | Tony Gravely · KO/TKO | R1 1:08 | 2022-06-04 | UFC Fight Night: Volkov vs. Rozenstruik |
| 31 | 1:09 | Dustin Pague vs John Albert | John Albert · KO/TKO | R1 1:09 | 2011-12-03 | The Ultimate Fighter: Team Bisping vs Team Miller Finale |
| 32 | 1:17 | Walel Watson vs Joseph Sandoval | Walel Watson · KO/TKO | R1 1:17 | 2011-10-01 | UFC Live: Cruz vs Johnson |
| 33 | 1:25 | Marlon Vera vs Frankie Saenz | Marlon Vera · KO/TKO | R1 1:25 | 2019-03-23 | UFC Fight Night: Thompson vs. Pettis |
| 34 | 1:29 | Marcus Brimage vs Jimmie Rivera | Jimmie Rivera · KO/TKO | R1 1:29 | 2015-07-18 | UFC Fight Night: Bisping vs Leites |
| 35 | 1:30 | Ivan Menjivar vs Charlie Valencia | Ivan Menjivar · KO/TKO | R1 1:30 | 2011-04-30 | UFC 129: St-Pierre vs Shields |
| 36 | 1:37 | Joe Soto vs Anthony Birchak | Anthony Birchak · KO/TKO | R1 1:37 | 2015-06-06 | UFC Fight Night: Boetsch vs Henderson |
| 37 | 1:50 | Kai Asakura vs Cameron Smothermangraded call | Kai Asakura · KO/TKO | R1 1:50 | 2026-05-30 | UFC Fight Night: Song vs. Figueiredo |
| 38 | 1:54 | Eddie Wineland vs Sean O'Malley | Sean O'Malley · KO/TKO | R1 1:54 | 2020-06-06 | UFC 250: Nunes vs. Spencer |
| 39 | 1:58 | Montel Jackson vs Jesse Strader | Montel Jackson · KO/TKO | R1 1:58 | 2021-03-20 | UFC Fight Night: Brunson vs. Holland |
| 40 | 1:59 | Malcolm Wellmaker vs Cameron Saaiman | Malcolm Wellmaker · KO/TKO | R1 1:59 | 2025-04-26 | UFC Fight Night: Machado Garry vs. Prates |
| 41 | 2:01 | Batgerel Danaa vs Brandon Davis | Batgerel Danaa · KO/TKO | R1 2:01 | 2021-10-16 | — |
| 42 | 2:01 | Frankie Edgar vs Chris Gutierrez | Chris Gutierrez · KO/TKO | R1 2:01 | 2022-11-12 | UFC 281: Adesanya vs. Pereira |
| 43 | 2:02 | Sean O'Malley vs Jose Quinonez | Sean O'Malley · KO/TKO | R1 2:02 | 2020-03-07 | UFC 248: Adesanya vs. Romero |
| 44 | 2:02 | Louis Smolka vs Vince Morales | Vince Morales · KO/TKO | R1 2:02 | 2021-12-04 | UFC Fight Night: Font vs. Aldo |
| 45 | 2:04 | Alejandro Perez vs Song Yadong | Song Yadong · KO/TKO | R1 2:04 | 2019-07-06 | UFC 239: Jones vs. Santos |
| 46 | 2:04 | Douglas Silva de Andrade vs Gaetano Pirrello | Douglas Silva de Andrade · KO/TKO | R1 2:04 | 2021-10-02 | — |
| 47 | 2:06 | Marlon Moraes vs Song Yadong | Song Yadong · KO/TKO | R1 2:06 | 2022-03-12 | UFC Fight Night: Santos vs. Ankalaev |
| 48 | 2:07 | Kris Moutinho vs Guido Cannetti | Guido Cannetti · KO/TKO | R1 2:07 | 2022-03-12 | UFC Fight Night: Santos vs. Ankalaev |
| 49 | 2:15 | Randy Costa vs Boston Salmon | Randy Costa · KO/TKO | R1 2:15 | 2019-10-18 | UFC Fight Night: Reyes vs. Weidman |
| 50 | 2:19 | George Roop vs Rob Font | Rob Font · KO/TKO | R1 2:19 | 2014-07-05 | UFC 175: Weidman vs Machida |
| 51 | 2:19 | JP Buys vs Marcus McGhee | Marcus McGhee · KO/TKO | R1 2:19 | 2023-08-12 | UFC Fight Night: Luque vs. Dos Anjos |
| 52 | 2:28 | Ricardo Ramos vs Said Nurmagomedov | Said Nurmagomedov · KO/TKO | R1 2:28 | 2019-02-02 | UFC Fight Night: Assuncao vs. Moraes 2 |
| 53 | 2:31 | Iuri Alcantara vs Iliarde Santos | Iuri Alcantara · KO/TKO | R1 2:31 | 2013-05-18 | UFC on FX: Belfort vs. Rockhold |
| 54 | 2:37 | Malcolm Wellmaker vs Kris Moutinho | Malcolm Wellmaker · KO/TKO | R1 2:37 | 2025-06-14 | UFC Fight Night: Usman vs. Buckley |
| 55 | 2:39 | Pedro Munhoz vs Bryan Caraway | Pedro Munhoz · KO/TKO | R1 2:39 | 2018-11-30 | The Ultimate Fighter: Heavy Hitters Finale |
| 56 | 2:43 | Michael McDonald vs John Lineker | John Lineker · KO/TKO | R1 2:43 | 2016-07-13 | UFC Fight Night: McDonald vs. Lineker |
| 57 | 2:43 | Jamie Siraj vs John Yannisgraded call | John Yannis · KO/TKO | R1 2:43 | 2026-04-18 | UFC Fight Night: Burns vs. Malott |
| 58 | 2:46 | Adrian Yanez vs Victor Rodriguez | Adrian Yanez · KO/TKO | R1 2:46 | 2020-10-31 | UFC Fight Night: Hall vs. Silva |
| 59 | 2:47 | Pedro Munhoz vs Matt Hobar | Pedro Munhoz · KO/TKO | R1 2:47 | 2014-05-31 | — |
| 60 | 2:47 | Adrian Yanez vs Vinicius Salvador | Adrian Yanez · KO/TKO | R1 2:47 | 2024-05-18 | UFC Fight Night: Barboza vs. Murphy |
| 61 | 2:47 | Cody Garbrandt vs Adrian Yanezgraded call | Adrian Yanez · KO/TKO | R1 2:47 | 2026-07-11 | UFC 329: McGregor vs. Holloway 2 |
| 62 | 2:48 | Aoriqileng vs Cameron Else | Aoriqileng · KO/TKO | R1 2:48 | 2022-04-23 | UFC Fight Night: Lemos vs. Andrade |
| 63 | 2:48 | Santiago Luna vs Quang Le | Santiago Luna · KO/TKO | R1 2:48 | 2025-09-13 | UFC Fight Night: Lopes vs. Silva |
| 64 | 2:53 | Thomas Almeida vs Cody Garbrandt | Cody Garbrandt · KO/TKO | R1 2:53 | 2016-05-29 | UFC Fight Night: Almeida vs Garbrandt |
| 65 | 2:57 | Johnny Eduardo vs Matthew Lopez | Matthew Lopez · KO/TKO | R1 2:57 | 2017-06-03 | UFC 212: Aldo vs. Holloway |
| 66 | 2:57 | Rob Font vs Adrian Yanez | Rob Font · KO/TKO | R1 2:57 | 2023-04-08 | UFC 287: Pereira vs. Adesanya 2 |
| 67 | 2:58 | Jumabieke Tuerxun vs Marcus Brimage | Marcus Brimage · KO/TKO | R1 2:58 | 2014-11-07 | UFC Fight Night: Rockhold vs Bisping |
| 68 | 3:01 | Batgerel Danaa vs Guido Cannetti | Batgerel Danaa · KO/TKO | R1 3:01 | 2020-03-07 | UFC 248: Adesanya vs. Romero |
| 69 | 3:04 | Eddie Wineland vs Takeya Mizugaki | Eddie Wineland · KO/TKO | R1 3:04 | 2016-12-17 | UFC on FOX: VanZant vs. Waterson |
| 70 | 3:05 | Aiemann Zahabi vs Drako Rodriguez | Aiemann Zahabi · KO/TKO | R1 3:05 | 2021-02-20 | UFC Fight Night: Blaydes vs. Lewis |
| 71 | 3:10 | Cameron Saaiman vs Terrence Mitchell | Cameron Saaiman · KO/TKO | R1 3:10 | 2023-07-08 | UFC 290: Volkanovski vs. Rodriguez |
| 72 | 3:15 | Khalid Taha vs Cristian Quinonez | Cristian Quinonez · KO/TKO | R1 3:15 | 2022-09-03 | UFC Fight Night: Gane vs. Tuivasa |
| 73 | 3:18 | Miguel Torres vs Michael McDonald | Michael McDonald · KO/TKO | R1 3:18 | 2012-04-21 | UFC 145: Jones vs Evans |
| 74 | 3:28 | Teruto Ishihara vs Petr Yan | Petr Yan · KO/TKO | R1 3:28 | 2018-06-23 | UFC Fight Night: Cowboy vs. Edwards |
| 75 | 3:40 | Brad Pickett vs Yves Jabouin | Brad Pickett · KO/TKO | R1 3:40 | 2012-09-29 | UFC on FUEL TV: Struve vs Miocic |
| 76 | 3:42 | Renan Barao vs Urijah Fabertitle | Renan Barao · KO/TKO | R1 3:42 | 2014-02-01 | UFC 169: Barao vs Faber 2 |
| 77 | 3:42 | Rani Yahya vs Montel Jackson | Montel Jackson · KO/TKO | R1 3:42 | 2023-04-22 | UFC Fight Night: Pavlovich vs. Blaydes |
| 78 | 3:42 | Cody Garbrandt vs Brian Kelleher | Cody Garbrandt · KO/TKO | R1 3:42 | 2023-12-16 | UFC 296: Edwards vs. Covington |
| 79 | 3:47 | Rob Font vs Matt Schnell | Rob Font · KO/TKO | R1 3:47 | 2016-12-03 | The Ultimate Fighter: Tournament of Champions Finale |
| 80 | 3:47 | Marlon Moraes vs Rob Font | Rob Font · KO/TKO | R1 3:47 | 2020-12-19 | UFC Fight Night: Thompson vs. Neal |
| 81 | 3:49 | Adrian Yanez vs Tony Kelley | Adrian Yanez · KO/TKO | R1 3:49 | 2022-06-18 | UFC Fight Night: Kattar vs. Emmett |
| 82 | 3:50 | Erik Perez vs Byron Bloodworth | Erik Perez · KO/TKO | R1 3:50 | 2012-12-29 | UFC 155: Dos Santos vs Velasquez II |
| 83 | 3:58 | Ricky Simon vs Javid Basharat | Ricky Simon · KO/TKO | R1 3:58 | 2025-02-22 | UFC Fight Night: Cejudo vs. Song |
| 84 | 4:01 | Scott Jorgensen vs Ken Stone | Scott Jorgensen · KO/TKO | R1 4:01 | 2011-06-04 | The Ultimate Fighter: Team Lesnar vs Team dos Santos Finale |
| 85 | 4:04 | Ian Entwistle vs Alejandro Perez | Alejandro Perez · KO/TKO | R1 4:04 | 2016-04-10 | UFC Fight Night: Rothwell vs Dos Santos |
| 86 | 4:05 | Reuben Duran vs Hugo Viana | Hugo Viana · KO/TKO | R1 4:05 | 2012-12-15 | The Ultimate Fighter: Team Carwin vs. Team Nelson Finale |
| 87 | 4:09 | Kwan Ho Kwak vs Russell Doane | Russell Doane · KO/TKO | R1 4:09 | 2017-06-17 | UFC Fight Night: Holm vs. Correia |
| 88 | 4:10 | TJ Dillashaw vs Cody Garbrandttitle | TJ Dillashaw · KO/TKO | R1 4:10 | 2018-08-04 | UFC 227: Dillashaw vs. Garbrandt 2 |
| 89 | 4:10 | Elijah Smith vs Toshiomi Kazama | Elijah Smith · KO/TKO | R1 4:10 | 2025-08-09 | UFC Fight Night: Dolidze vs. Hernandez |
| 90 | 4:16 | Toshiomi Kazama vs Garrett Armfield | Garrett Armfield · KO/TKO | R1 4:16 | 2023-08-26 | UFC Fight Night: Holloway vs. The Korean Zombie |
| 91 | 4:18 | Yves Jabouin vs Thomas Almeida | Thomas Almeida · KO/TKO | R1 4:18 | 2015-04-25 | UFC 186: Johnson vs Horiguchi |
| 92 | 4:22 | TJ Dillashaw vs Hugo Viana | TJ Dillashaw · KO/TKO | R1 4:22 | 2013-04-20 | UFC on FOX: Henderson vs Melendez |
| 93 | 4:24 | Thomas Almeida vs Anthony Birchak | Thomas Almeida · KO/TKO | R1 4:24 | 2015-11-07 | UFC Fight Night: Belfort vs Henderson 3 |
| 94 | 4:37 | Eddie Wineland vs Johnny Eduardo | Johnny Eduardo · KO/TKO | R1 4:37 | 2014-05-10 | UFC Fight Night: Brown vs Silva |
| 95 | 4:38 | David Martinez vs Saimon Oliveira | David Martinez · KO/TKO | R1 4:38 | 2025-03-29 | UFC Fight Night: Moreno vs. Erceg |
| 96 | 4:40 | Sean O'Malley vs Marlon Vera | Marlon Vera · KO/TKO | R1 4:40 | 2020-08-15 | UFC 252: Miocic vs. Cormier 3 |
| 97 | 4:40 | Umar Nurmagomedov vs Raoni Barcelos | Umar Nurmagomedov · KO/TKO | R1 4:40 | 2023-01-14 | UFC Fight Night: Strickland vs. Imavov |
| 98 | 4:42 | Raulian Paiva vs Sean O'Malley | Sean O'Malley · KO/TKO | R1 4:42 | 2021-12-11 | UFC 269: Oliveira vs. Poirier |
| 99 | 4:43 | Louis Smolka vs Ryan MacDonald | Louis Smolka · KO/TKO | R1 4:43 | 2019-09-14 | UFC Fight Night: Cowboy vs. Gaethje |
| 100 | 4:44 | Eddie Wineland vs John Castaneda | John Castaneda · KO/TKO | R1 4:44 | 2021-02-20 | UFC Fight Night: Blaydes vs. Lewis |