Fighters: K
Last names starting with K, including retired fighters.
- Emily Kagan0-2-0Women's Strawweight
- Sirwan Kakai “Zohan”1-1-0Bantamweight
- Saidyokub Kakhramonov2-1-0Bantamweight
- Geza Kalman1-1-0Open Weight
- Kai Kamaka “Da Fighting Hawaiian”2-4-1Featherweight
- Martin Kampmann “The Hitman”20-7-0Welterweight
- Bharat Kandare “Daring”0-1-0Featherweight
- Masanori Kanehara1-2-0Bantamweight
- Denis Kang35-16-2 (2 NC)Middleweight
- Kyung Ho Kang “Mr. Perfect”19-11-0 (1 NC)Bantamweight
- Zhu Kangjie0-1-0Featherweight
- Manel Kape “StarBoy”23-7-0Flyweight
- David Kaplan “Diamond”0-2-0Lightweight
- Kai Kara-France “Don't Blink”25-12-0 (1 NC)Flyweight
- Alex Karalexis “The Assassin”10-6-0Welterweight
- Ernesta Kareckaite “Heavy-Handed”1-2-1Women's Flyweight
- Impa Kasanganay “Tshilobo”20-7-0Welterweight
- Nadia Kassem5-2-0Women's Flyweight
- Yusuke Kasuya0-2-0Lightweight
- Brad Katona “Superman”14-5-0Bantamweight
- Calvin Kattar23-10-0Featherweight
- Sarah Kaufman22-5-0 (1 NC)Women's Bantamweight
- Lone'er Kavanagh10-2-0Flyweight
- Tatsuya Kawajiri “Crusher”37-14-2Featherweight
- Toshiomi Kazama1-3-0Bantamweight
- Julie Kedzie0-2-0Women's Bantamweight
- Losene Keita “Black Panther”17-2-0Featherweight
- CJ Keith0-2-0Lightweight
- Chris Kelades “The Greek Assassin”15-5-0Flyweight
- Brian Kelleher “Boom”24-16-0Bantamweight
- Tony Kelley “Primetime”8-3-0Bantamweight
- Daniel Kelly6-4-0Middleweight
- Paul Kelly15-5-0Lightweight
- Song Kenan “The Assassin”22-9-0Welterweight
- Jeremy Kennedy “JBC”22-7-0 (1 NC)Featherweight
- Steve Kennedy “The Steamrolla”0-2-0Welterweight
- Tim Kennedy18-6-0Middleweight
- Casey Kenney16-4-1Bantamweight
- Mark Kerr “The Smashing Machine”15-11-0 (1 NC)Heavyweight
- Rustam Khabilov “Tiger”24-4-0Welterweight
- Sergey Khandozhko “Honda”27-6-1Welterweight
- Aliaskhab Khizriev “Black Wolf”1-0-0 (1 NC)Middleweight
- Pannie Kianzad “Banzai”16-10-0Women's Bantamweight
- Katsunori Kikuno24-8-2Featherweight
- Sanae Kikuta1-0-0Middleweight
- Jacob Kilburn “The Killer”0-2-0Featherweight
- Dong Hyun Kim “Stun Gun”22-4-1 (1 NC)Welterweight
- Ji Yeon Kim “Firefist”9-7-2Women's Flyweight
- Sangwook Kim “Frogman”0-1-0Lightweight
- Jeremy Kimball21-12-0Light Heavyweight
- Rob Kimmons “The Rosedale Reaper”25-9-0Middleweight
- Dustin Kimura “The Diamond”11-3-0Bantamweight
- Mike King0-1-0Middleweight
- Sean King “The King of New Orleans”1-0-0Featherweight
- Kyle Kingsbury “Kingsbu”11-6-0 (1 NC)Light Heavyweight
- Yusaku Kinoshita0-2-0Welterweight
- Kamuela Kirk “The Jawaiian”1-2-0Lightweight
- Justine Kish9-7-0Women's Flyweight
- Koji Kitao0-1-0Open Weight
- Ludovit Klein “Mr. Highlight”24-6-1Lightweight
- Nick Klein “Blue Collar”0-2-0Middleweight
- Fatima Kline “The Archangel”10-1-0Women's Strawweight
- Drakkar Klose16-4-1Lightweight
- Jason Knight “The Kid”23-9-0Featherweight
- William Knight “Knightmare”11-6-0Light Heavyweight
- Josefine Knutsson “Thunder”2-1-0Women's Strawweight
- Seokhyeon Ko “Technical”2-1-0Welterweight
- Erik Koch “Phoenix”16-6-0Welterweight
- Brad Kohler1-1-0Heavyweight
- Tsuyoshi Kohsaka “TK”30-21-2Heavyweight
- John Kolosci0-1-0Welterweight
- Syuri Kondo6-3-0Women's Strawweight
- Yuki Kondo1-2-0Light Heavyweight
- Mantas Kondratavicius1-0-0Middleweight
- Cheick Kongo31-12-2 (1 NC)Heavyweight
- Roman Kopylov16-5-0Middleweight
- Bruno Korea0-1-0Bantamweight
- Josh Koscheck17-11-0Welterweight
- Steven Koslow “Obi Won Shinobi The Pillow”1-1-0Bantamweight
- Naoyuki Kotani37-18-7Lightweight
- Karolina Kowalkiewicz16-10-0Women's Strawweight
- Derrick Krantz “D-Rock”0-2-0Welterweight
- James Krause “The”28-8-0Welterweight
- Pascal Krauss “Panzer”11-2-0Welterweight
- Joseph Kropschot “The Land Animal”0-0-0Middleweight
- Kaynan Kruschewsky “Bahia”0-2-0Lightweight
- Nikita Krylov “The Miner”31-12-0Light Heavyweight
- Michael Kuiper15-7-0Middleweight
- Anton Kuivanen26-13-0Lightweight
- Aleksei Kunchenko2-2-0Welterweight
- Rizvan Kuniev14-3-1 (1 NC)Heavyweight
- Keigo Kunihara0-1-0Heavyweight
- Kiichi Kunimoto “Strasser”21-12-2 (1 NC)Welterweight
- Leo Kuntz “The Lion”0-2-0Lightweight
- Ryan Kuse “3rd Street Savage”0-1-0Featherweight
- Guram Kutateladze “Georgian Viking”14-6-0Lightweight
- Kwan Ho Kwak0-2-0Bantamweight
- Mike Kyle “MAK”23-19-1 (2 NC)Heavyweight