Alexey Ignashov is a Belarusian former Heavyweight kickboxer. He is a four-time Muay Thai World champion, K-1 World GP 2003 in Paris and K-1 World GP 2001 in Nagoya tournament champion. As of 2011 he is living in Auckland, New Zealand, and training at Balmoral Lee Gar Gym under Lollo Heimuli.
Jérôme Philippe Le Banner is a French kickboxer, mixed martial artist, and professional wrestler. Le Banner fought for most of his career in K-1 and became known for his aggressive fighting style and knockout power. He is a 2-time K-1 World Grand Prix runner up, a 2-time K-1 Preliminary Grand Prix champion, and is a multiple time world champion in Kickboxing and Muay Thai. He holds notable victories over Ernesto Hoost (twice), Francisco Filho, Mark Hunt, Sam Greco, Mike Bernardo (twice), Peter Aerts, Rick Roufus, Remy Bonjasky, Tyrone Spong, Stefan Leko (twice), Masaaki Satake, Maurice Smith, Gary Goodridge (twice), Musashi (twice), Cyril Abidi and Choi Hong-man (twice).
Alistair Cees Overeem is a Dutch former professional mixed martial artist and kickboxer. He is a former Strikeforce Heavyweight Champion, Dream Heavyweight Champion, K-1 World Grand Prix Champion, and was the first fighter to hold world titles in MMA and K-1 kickboxing at the same time. Overeem is also a one-time challenger for the UFC Heavyweight Championship.
Badr Hari is a Moroccan-Dutch professional kickboxer and Muay Thai fighter. Born in Amsterdam, Hari made his professional kickboxing debut in 2000, and quickly rose to fame with his aggressive and explosive style. In 2002, he became the WPKL Dutch Muay Thai champion and The Eight Tournament champion. In 2005, he made his K-1 debut, defeating Stefan Leko in a rematch by knockout. In 2007, he became the K-1 Heavyweight World Champion when he defeated Yusuke Fujimoto by knockout in 56 seconds. He defended his title twice, against Doug Viney and Ray Sefo, before losing it to Remy Bonjasky by disqualification in 2008.
Alexander "Sasha" Ustinov is a Russian professional boxer, former kickboxer and mixed martial artist. In boxing, he has challenged once for the WBA (Regular) heavyweight title in 2017.
Brecht "The Gentle Giant" Wallis is a Belgian retired kickboxer. He holds notable victories over Jorgen Kruth (twice), Carter Williams, Alexander Ustinov, and Errol Zimmerman.
Artur Kyshenko is a Ukrainian middleweight kickboxer, fighting out of Kyshenko Gym. He is the 2015 Kunlun Fight 80 kg Tournament World Champion and K-1 World MAX 2008 Finalist.He was ranked as the #1 Welterweight in the world by Combat Press from September 2017 until February 2020, when he transitioned into boxing. He had been continually ranked in the welterweight top ten by Combat Press since September 2014. On 24 July 2019, Kyshenko was suspended for 4 years by National Anti-Doping Agency of France (AFLD) after testing positive for prohibited substances.
Errol Zimmerman is a Curaçaoan-Dutch kickboxer, representing the Hemmers Gym in Breda, Netherlands. He is K-1 World Grand Prix 2008 in Amsterdam and SUPERKOMBAT Fight Club tournaments champion. Zimmerman is also former Glory Heavyweight Championship and K-1 Super Heavyweight Championship challenger. In 2011 WIPU voted him the Kickboxer of the Year.
Gökhan Saki is a Turkish-Dutch kickboxer and mixed martial artist. He is a Dutch, European and World Muay Thai champion, K-1 World GP 2006 in Amsterdam tournament finalist, K-1 World Grand Prix 2008 in Hawaii champion and former Glory Light Heavyweight Champion. Saki also competed in the light heavyweight division of the Ultimate Fighting Championship.
Richard P. "Rick" Cheek is an American kickboxer and mixed martial artist who competes in the heavyweight division. A North American Muay Thai champion as an amateur, Cheek turned professional in 2005 and debuted in K-1 the same year. He holds notable wins over WSOF standout Dave Huckaba in MMA, 2001 K-1 Japan Grand Prix Champion Nicholas Pettas and multiple time world kickboxing champion Mike Sheppard.
Serhiy Lashchenko, also spelled as Sergii Lashchenko and Sergei Lascenko, was a Ukrainian kickboxer. He was a K-1 and Superkombat Heavyweight.
Lithuania Bushido Federation, also known as Bushido Lithuania, is the largest combat sports promotion in Lithuania.
Jean-Claude Leuyer, or simply Jean Claude, is an American former heavyweight kickboxer. He was a six-time world champion, holding titles in four different organizations, and competing in sixteen world title fights. He holds notable wins over Rob Kaman and Tomasz Kucharzewski in K-1.
Sergej Maslobojev, nicknamed 'Kuvalda' ('Sledgehammer'), is a Lithuanian mixed martial artist, boxer and kickboxer, currently signed with GLORY, where he is the former Glory Light Heavyweight champion. He is ranked as the third best light heavyweight in the world by Combat Press as of September 2022, and third best by Beyond Kickboxing as of October 2022.
Curtis Schuster is a former American Thai boxer. He was a two-time world champion in kickboxing and Muay Thai. Schuster's last fight was in 1998 at the K-1 World GP 1998 in Las Vegas.
Jegish Yegoian is a Dutch-Armenian heavyweight kickboxer. He is the former I.S.K.A. World Heavyweight champion and the 2013 Superkombat World Grand Prix IV Tournament winner.
Roman Olegovich Kryklia is a Ukrainian heavyweight kickboxer currently signed to ONE Championship where he competes in both Light Heavyweight and Heavyweight division in Kickboxing, where he is the inaugural and current ONE Light Heavyweight Kickboxing World Champion. along with the inaugural and current ONE Heavyweight Muay Thai World Championship.
King of Kings, or KOK, is a European kickboxing promotion founded in 2009. The company has its headquarters in Vilnius, Lithuania.
Ștefan Lătescu is a Romanian professional kickboxer and boxer, and former Muay Thai and kempo practitioner, currently signed to GLORY. A former amateur in two sports, Lătescu notched over 150 wins in amateur kickboxing, and is the youngest senior heavyweight champion in the amateur boxing history of Romania. He is still undefeated nationally in boxing.
Claudio Istrate is a Romanian-Italian kickboxer.
Ariel Machado 
Florin Ivănoaie
Samuele Pugliese
Pavlos Kochliaridis
Jakub Doman
Sergej Maslobojev 
Thomas Gosso
Dawid Panfil
Tariq Osaro 
Alexandru Velenciuc
Sami Kerim
Victor Peixoto