| 2001 | Kennel Klub | Big Dog, Loco Magico, Kid Cymru | 2014- | | |
| 2002 | Kensuke Family | Kensuke Sasaki, Akira Hokuto, Katsuhiko Nakajima, Genichiro Tenryu, Raimu Mishima | 2004-2007 | | |
| 2003 | Kerma | Sebastian Vauhkonen, Shemeikka, Toni Tamminen | 2023- | | |
| 2004 | Kevin Bennett Experience | Big Tank, Franky The Mobster, The Muscle, Kevin Bennett, Idris Abraham, Joe Coleman | 2017-2019 | | |
| 2005 | Kevin Duncan Enterprizes | Brandon Parker , Chaos , Stryknyn, Kevin Duncan, Jeremy Vain | 2010 | | |
| 2006 | Kids Of Keast | Cameron Keast, Christian Garrett, Caeden Ooten, Harley Haven | 2022- | | |
| 2007 | Kidz | Austin Luke, Dyln McKay, Marcus Mathers | 2020-2021 | | |
| 2008 | Kill Screen | Mark Wheeler, Scotty O'Shea, Shane Sabre, Anthony Gaines, Kevin Blackwood | 2017-2019 | | |
| 2009 | Kill The Magic | Matt Ice, Steve Off, Ricky Martinez , Mike Donovan, Aaron Bradley | 2017-2019 | | |
| 2010 | Killanova Inc. | Christian Casanova, Ken Broadway, Royce Bishop, Trigga The OG/Triplelicious | 2018-2019 | | |
| 2011 | Killective | Kelly Sixx, Leyton Buzzard, Danny Duggan , LA Taylor, Bullit | 2023- | | |
| 2012 | Killer Cult | Sami Callihan, Dave Crist, Jake Crist, JT Davidson, Jessicka Havok, Abyss | 2016-2018 | | |
| 2013 | Killer Family | Rey Krimen, Sadico, Sepulturero | - | | |
| 2014 | Killer Family | Rey Krimen, Sepulturero, Terry 2000 | - | | |
| 2015 | Killer Impact | Kikyo, Rook Kelly, Pitfall Jones | - | | |
| 2016 | Killer Instinct | Jacoby Riddick, Kevin Cartwright, Mike Skyros, Ryze | 2017-2019 | | |
| 2017 | Kimura Monster-gun | Kyoko Kimura, Hailey Hatred, Alpha Female, Christina Von Eerie, Female Predator Amazon, Act Yasukawa, Kris Wolf | 2012-2015 | | |
| 2018 | King Legion | FUMA, Kazushi Miyamoto, MEN's Teioh, SAGAT | 2015 | | |
| 2019 | King Vu's Court | King Vu, Matthew Taylor, Chadwick Cruise & Shawn Bond | 2009-2010 | | |
| 2020 | Kingdom Of Love | Dyl Dempsey, Joey Dynamite , Rob Love | 2019- | | |
| 2021 | Kings | Carlo Cannon, Slex, Gabriel Wolfe, The Enforcer , Alberto Bravo, Jim Raze | 2010-2013 | | |
| 2022 | Kings | Joe Keys, Ken Dixon, Rob Locke, Ryan McBride | 2016 | | |
| 2023 | Kings Court | King Cobra , Anna Minoushka, Le Prince Kiol | 2010-2012 | | |
| 2024 | Kings Of NXT | Pat McAfee, Danny Burch, Oney Lorcan, Pete Dunne, Ridge Holland | 2020-2021 | | |
| 2025 | Kings Of Ruin | Mike Boomer, Miki Fortune, HAVOK, Zak Sabbath | 2020- | | |
| 2026 | Kings Of The North | Bonesaw, Damien Corvin, Dunkan Disorderly, Adam Maxted | 2015- | | |
| 2027 | Kingsgate | Patrick Scott, Chance Rizer, Donnie Ray, Mason Myles, Ryan Galeone, Wheeler Yuta | 2020- | | |
| 2028 | Kingsglaive | Matt Makowski, Travis Huckabee, Max ZERO | 2022- | | |
| 2029 | Kingsmen | Tommy Too Much, Kyle Matthews, Logan Creed, Slim J, Merica Strong | 2016-2017 | | |
| 2030 | Kira Clan | Aaron Orion, Adam Wick, Alex Weir, Dre Jacobs, Jack Price, Malcolm Monroe III, Johnny Delicious | 2019- | | |
| 2031 | Kishida Corporation | KISHIDA, HITORI, HIRO, OSAMU, Kuzu Hayashi, ASUKA | 2017- | | |
| 2032 | Klan Kaoz | Ciber The Main Man/Cibernetico, Sharlie Rockstar, The Chrizh/El Zorro | 2018-2019 | | |
| 2033 | Klaus' Asset Protection Service | Jimmy Jamal Jenkins, John Dozer, Michael Morleone | 2013-2015 | | |
| 2034 | Kluth Brand | Nickolas Kluth, Red Cat, Chris Titan, Herbi Vara | 2022- | | |
| 2035 | Knight Dynasty | Ricky Knight, Ricky Knight Jr., Roy Knight, Saraya Knight/Sweet Saraya | - | | |
| 2036 | Knight Life | Bobcat, Mike Kruel, Simon Diamond, Striker/Matt Striker, Chris Chetti, Mike Tobin | 2002 | | |
| 2037 | Knight Life Final Cut | Billy Reil, Mike Tobin, Trent Acid | 2005 | | |
| 2038 | Knights Of The Round Table | Chris Richards, Jeff Baker, Lukas Angel, Kole Layton King, Rob Knight | 2010-2011 | | |
| 2039 | Knights Templar | Gilligan Gordon, Kade Callous, JD Knight, Maddog Maxx | 2010-2011 | | |
| 2040 | Koen | Kengo Mashimo, Tatsuya Hanami, Kunio Toshima, Takuro Niki | 2022- | | |
| 2041 | Kojima Army | Satoshi Kojima, TAKA Michinoku, NOSAWA Rongai, Taichi | 2010-2011 | | |
| 2042 | Kokusai Ketsumeigun | Rusher Kimura, Goro Tsurumi, Ryuma Go, Apollo Sugawara, Masahiko Takasugi | 1984-1990 | | |
| 2043 | Korruptsiya | Boris Pain, Hans Von Krupp, Rik Stalwart, Justin Striker, Yuri Gromow | 2019 | | |
| 2044 | Kowloon | Ultimo Dragon, Fujita Hayato, Shu Sato, Kei Sato, Ken45, Maguro Ooma/Manjimaru, Takeshi Minamino, Taro Nohashi, Rasse, Rui Hiugaji, KAGETORA | 2008-2012 | | |
| 2045 | Kraftwerk | 2Face, Karsten Beck, Carnage | 2011 | | |
| 2046 | Krash Krew | Gemini, Kwame, Wrecker, Dozer | 1998-2007 | | |
| 2047 | Kraze | Cameron Kraze, Kyle Kraze, Marky B. Kraze | - | | |
| 2048 | Kraze Family | Cameron Kraze, Kyle Kraze, Marky B. Kraze | - | | |
| 2049 | Krowz | Dr. XXplosive, Eun Beyond, Kim Mir, Kid Rain, Jo Kyung Ho, Choi Du Eok | 2021- | | |
| 2050 | Kulture | Moko Kai, Toa & Eugenie | 2023- | | |
| 2051 | Kulture Nation | Redus Atlas, Rockin Rivera, Shaq Jordan, TW3 | 2021-2023 | | |
| 2052 | Kyushu Suppression Team | Yuto Aijima, Asosan, Diablo, Kurokage, Kishan | 2011-2014 | | |
| 2053 | L' Agence | Gorgeous Mike, Handsome JF, Leon Saver & Urban Miles | 2011-2014 | | |
| 2054 | L'Academie De Police | Cadet Myre, Cleitus LeNoir, Dexter Doom, Fred La Merveille/Sergeant Lauzon, Mathis Myre, Will O'Kley | 2021- | | |
| 2055 | L'Eclissi | Doblone, Fobia , Sirio, Oscuro , Rust, Mida, Blackout , Jesse Jones | 2023- | | |
| 2056 | L.A.D. | Ariki Toa, Lenko Sins, Solar Sanchez, Domina, Alejandro Saez, Impacto , Sergio Catalan | 2017 | | |
| 2057 | L.A.D. | Ariki Toa, Lenko Sins, Solar Sanchez, Domina, XL/Xtra Large, Impacto , Sergio Catalan | 2015-2017 | | |
| 2058 | LA Fuckers | Acero Dorado, Dr. Maldad , Piloto Suicida, Shamu Jr., Super Boy, Impacto 2000 | 2008- | | |
| 2059 | LEGIT | Charlie Hubley, Cole Trafford, Nick Strong | 2018- | | |
| 2060 | LEVEL5 | Tomoko Watanabe, Yuu Yamagata, Sahara Seven, Natsumi Maki | - | | |
| 2061 | LIBERTA | Jun Masaoka, Maro Kuriyama, Raipachi Isobe, Kirin, Hiroaki Taniguchi | 2019-2021 | | |
| 2062 | LOV | Dick Togo, Black Buffalo, Daio QUALLT, Policeman | 1999-2000 | | |
| 2063 | LOVE | Biagio Crescenzo, Donnie Suarez, Jacob Diez, Lois Grain | 2017-2018 | | |
| 2064 | La 616 | Memo Valle, Potro Jr., Sergio Romo Jr., Coco Viper | - | | |
| 2065 | La Agencia | Giger, Marduk, Ramces | - | | |
| 2066 | La Alianza | Hooligan, Ramstein, Sangre Azteca | 2003-2006 | | |
| 2067 | La Alianza | Don Rhada, Cain El Tirano, Pashenko | - | | |
| 2068 | La Anarquia | Black Heart, Cadenero Punk, Lobo Azul, Matanza 68 | - | | |
| 2069 | La Anarquia | Daga, Eterno, Steve Pain | 2014 | | |
| 2070 | La Anarquia | Juventud Guerrera, Eterno, Steve Pain | 2013-2014 | | |
| 2071 | La Anexion | Mecha Wolf, Serpentico, Angel Fashion, Mark Davidson, Mike Mendoza | 2019- | | |
| 2072 | La Artilleria Ilegal | Chicano, Jova, Lightning | 2022- | | |
| 2073 | La Avalancha Alvarado | Brazo de Plata, Maximo, La Mascara | 2009-2015 | | |
| 2074 | La Avalancha Alvarado | Brazo de Plata, Maximo Sexy, La Mascara | 2015- | | |
| 2075 | La Banda Panda | Panda Kid, Panda Lee, Super Panda | - | | |
| 2076 | La Banda del Knock Out | Ramces, Colossus , Sr. Insano, Macho, Atemista | 2011- | | |
| 2077 | La Blanco Family | El Gordo, Emanuel El Gringo, Alex Sheridan, Psycho Mike | 2021- | | |
| 2078 | La Bola del Terror | Animaniac, Scream, Shamu, Angel Negro Jr. | - | | |
| 2079 | La Casta | Alessandro Corleone, Andy Manero, Kobra, Mr. Excellent, Riot , Miroslav Mijatovic, Jari Syberia | 2018- | | |
| 2080 | La Clique Du Kid | James Edward Anderson, Paul Goliath, Tommy Le Kid, Tony Duscini | 2004 | | |
| 2081 | La Coalition | Chris Andrews, Dylan Donovan, Joe Kovick | 2018- | | |
| 2082 | La Cofradia | Blade , Mox, Olivier | 2022- | | |
| 2083 | La Congregacion | Elder A, Elder C, Elder D, Elder J, Elder M, Ministro C | 2015-2017 | | |
| 2084 | La Corporacion | Black Tiger , Cerebro Negro, Dr. Cerebro , El Pantera, Pentagon Black, Scorpio Jr., Veneno | 2005-2006 | | |
| 2085 | La Cosa Nostra | Don Gotti, Nick Colucci, Seth Gambino/Chris Gambino | - | | |
| 2086 | La Demencia Dorada | Dragosth, Gargola, Golden , Juana la Loca | - | | |
| 2087 | La Dinastia Casas | Negro Casas, Felino, Puma , Tiger | 2012- | | |
| 2088 | La Dinastia de la Muerte | Negro Navarro, Trauma I, Trauma II | 2009- | | |
| 2089 | La Dynastie Du Chaos | Aaron Caido, Alex Ezio, Shadow | 2021- | | |
| 2090 | La Elegancia Aerea | Criss Boy, Falkho, Fuzzion | 2016- | | |
| 2091 | La Empresa | DMT Azul, Puma King, Sam Adonis, Estrellita | 2021-2022 | | |
| 2092 | La Escuadron de la Muerte | Cyborg , Maniacop, Vader Cop | 1999-2000 | | |
| 2093 | La Escuadron de la Muerte | Cyborg Cop, Xibalba, Capitan Muerte | 2007 | | |
| 2094 | La Excelencia Tapatia | Titan , Triton , Esfinge | 2016- | | |
| 2095 | La Faccion Hardcore | Al-Cold, Giger, Marduk, Ripper | - | | |
| 2096 | La Faccion Ingobernable | Dragon Lee , Kenny King, La Bestia Del Ring, Rush , Amy Rose | 2020-2021 | | |
| 2097 | La Faccion Ingobernable | Rush , La Bestia Del Ring, Dralistico, Vangellys, Dragon Lee | 2021- | | |
| 2098 | La Faccion Ingobernable | Rush , Jose The Assistant, Preston Vance, Dralistico, Dragon Lee , Andrade El Idolo | 2022- | | |
| 2099 | La Faccion Ruda | Ram-C, Eddie Torreblanca, Green Demon | - | | |
| 2100 | La Famiglia | Francesco Messina, Connor Matthews, Giuseppe | 2015-2016 | | |
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