# List of ONE Championship champions

This is a list of ONE Championship champions in each weight division of each sport.

## Current champions

Men :
| Division | Champion | Since | Ref. | Defenses |
| Mixed martial arts |||||
| Heavyweight 265 lb (120.2 kg) | Oumar Kane | November 9, 2024 | | 0 |
| Light Heavyweight 225 lb (102.1 kg) | Anatoly Malykhin | December 3, 2022 | | 0 |
| Middleweight 205 lb (93.0 kg) | Anatoly Malykhin | March 1, 2024 | | 0 |
| Welterweight 185 lb (83.9 kg) | Christian Lee | November 19, 2022 | | 0 |
| Lightweight 170 lb (77.1 kg) | Christian Lee | August 26, 2022 | | 0 |
| Featherweight 155 lb (70.3 kg) | Tang Kai | August 26, 2022 | | 1 |
| Bantamweight 145 lb (65.8 kg) | Fabrício Andrade | February 25, 2023 | | 1 |
| Flyweight 135 lb (61.2 kg) | Vacant | – | | |
| Strawweight 125 lb (56.7 kg) | Joshua Pacio | March 1, 2024 | | 1 |
| Kickboxing | Kickboxing | Kickboxing | Kickboxing | |
| Light Heavyweight 225 lb (102.1 kg) | Roman Kryklia | November 16, 2019 | | 2 |
| Lightweight 170 lb (77.1 kg) | Regian Eersel | October 5, 2024 | | 0 |
| Featherweight 155 lb (70.3 kg) | Superbon Singha Mawynn | January 6, 2025 | | 0 |
| Bantamweight 145 lb (65.8 kg) | Jonathan Haggerty | November 4, 2023 | | 1 |
| Flyweight 135 lb (61.2 kg) | Superlek Kiatmuukao | January 14, 2023 | | 2 |
| Strawweight 125 lb (56.7 kg) | Prajanchai P.K.Saenchai | June 28, 2024 | – | 0 |
| Muay Thai |||||
| Heavyweight Above 225 lb (102.1 kg) | Roman Kryklia | December 8, 2023 | | 0 |
| Lightweight 170 lb (77.1 kg) | Regian Eersel | October 22, 2022 | | 2 |
| Featherweight 155 lb (70.3 kg) | Tawanchai P.K.Saenchai | September 29, 2022 | | 4 |
| Bantamweight 145 lb (65.8 kg) | Superlek Kiatmuukao | September 7, 2024 | - | - |
| Bantamweight 145 lb (65.8 kg) | Nabil Anane (interim) | January 24, 2025 | | 0 |
| Flyweight 135 lb (61.2 kg) | Vacant | - | | - |
| Strawweight 125 lb (56.7 kg) | Prajanchai P.K.Saenchai | December 22, 2023 | | 1 |
| Submission grappling |||||
| Welterweight 185 lb (83.9 kg) | Tye Ruotolo | November 4, 2023 | | 1 |
| Lightweight 170 lb (77.1 kg) | Kade Ruotolo | October 22, 2022 | | 3 |
| Flyweight 135 lb (61.2 kg) | Vacant | – | – | – |
Women :
| Division | Champion | Since | Ref. | Defenses |
| Mixed martial arts |||||
| Strawweight 125 lb (56.7 kg) | Xiong Jing Nan | January 20, 2018 | | 7 |
| Strawweight 125 lb (56.7 kg) | Denice Zamboanga (interim) | January 10, 2025 | | 0 |
| Atomweight 115 lb (52.2 kg) | Stamp Fairtex | September 30, 2023 | | 0 |
| Kickboxing |||||
| Strawweight 125 lb (56.7 kg) | Jackie Buntan | November 9, 2024 | | 0 |
| Atomweight 115 lb (52.2 kg) | Phetjeeja Lukjaoporongtom | March 9, 2024 | | 0 |
| Muay Thai |||||
| Strawweight 125 lb (56.7 kg) | Vacant | – | – | – |
| Atomweight 115 lb (52.2 kg) | Allycia Rodrigues | August 28, 2020 | | 3 |
| Submission grappling |||||
| Atomweight 115 lb (52.2 kg) | Mayssa Bastos | August 3, 2024 | | 1 |

## Men's championship history
### Heavyweight World Championship

       Weight limit
          — MMA: 265 lb (120.2 kg)
          — Kickboxing / Muay Thai: Unlimited
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Brandon Vera def. Paul Cheng | ONE: Spirit of Champions Pasay, Philippines | Dec 11, 2015 | 1982 days | 1. def. Hideki Sekine at ONE: Age of Domination on Dec 2, 2016 2. def. Mauro Cerilli at ONE: Conquest of Champions on Nov 23, 2018 |
| 2 | Arjan Bhullar | ONE: Dangal Kallang, Singapore | May 15, 2021 | 769 days | |
| — | Anatoly Malykhin def. Kirill Grishenko for interim title | ONE: Bad Blood Kallang, Singapore | Feb 11, 2022 | — | |
| 3 | Anatoly Malykhin | ONE Friday Fights 22 Bangkok, Thailand | Jun 23, 2023 | 505 days | |
| 4 | Oumar Kane | ONE 169 Bangkok, Thailand | Nov 9, 2024 | 119 days (incumbent) | |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Roman Kryklia def. Alex Roberts | ONE Fight Night 17 Bangkok, Thailand | Dec 8, 2023 | 456 days (incumbent) | |

### Light Heavyweight World Championship

       Weight limit: 225 lb (102.1 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Roger Gracie def. Michal Pasternak | ONE: Ascent to Power Kallang, Singapore | May 6, 2016 | 526 days | |
| The title was vacated after Roger Gracie announced his retirement from MMA on October 14, 2017. ||||||
| 2 | Aung La Nsang def. Alexandre Machado | ONE: Quest for Gold Yangon, Myanmar | Feb 23, 2018 | 1160 days | 1. def. Brandon Vera at ONE: Century − Part 2 on Oct 13, 2019 |
| 3 | Reinier de Ridder | ONE on TNT 4 Kallang, Singapore | Apr 28, 2021 | 584 days | |
| 4 | Anatoly Malykhin | ONE on Prime Video 5 Pasay, Philippines | Dec 3, 2022 | 826 days (incumbent) | |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Roman Kryklia def. Tarik Khbabez | ONE: Age Of Dragons Beijing, China | Nov 16, 2019 | 1939 days (incumbent) | 1. def. Andrei Stoica at ONE: Collision Course on Dec 18, 2020 2. def. Murat Aygün at ONE: Full Circle on Feb 25, 2022 |

### Middleweight World Championship

       Weight limit: 205 lb (93 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Igor Svirid def. Leandro Ataides | ONE: Battle of the Lions Kallang, Singapore | Nov 7, 2014 | 336 days | |
| 2 | Vitaly Bigdash | ONE: Tigers of Asia Kuala Lumpur, Malaysia | Oct 9, 2015 | 630 days | 1. def. Aung La Nsang at ONE: Quest for Power on Jan 14, 2017 |
| 3 | Aung La Nsang | ONE: Light of a Nation Yangon, Myanmar | Jun 30, 2017 | 1218 days | 1. def. Ken Hasegawa at ONE: Spirit of a Warrior on Jun 29, 2018 2. def. Mohammad Karaki at ONE: Pursuit of Greatness on Oct 26, 2018 3. def. Ken Hasegawa at ONE: A New Era on Mar 31, 2019 |
| 4 | Reinier de Ridder | ONE: Inside the Matrix Kallang, Singapore | Oct 30, 2020 | 1218 days | 1. def. Kiamrian Abbasov at ONE: Full Circle on Feb 25, 2022 2. def. Vitaly Bigdash at ONE 159 on Jul 22, 2022 |
| 5 | Anatoly Malykhin | ONE 166 Lusail, Qatar | Mar 1, 2024 | 372 days (incumbent) | |

### Welterweight World Championship

       Weight limit: 185 lb (83.9 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Nobutatsu Suzuki def. Brock Larson | ONE: War of Nations Kuala Lumpur, Malaysia | Mar 14, 2014 | 168 days | |
| 2 | Ben Askren | ONE: Reign of Champions Dubai, United Arab Emirates | Aug 29, 2014 | 1520 days | NC. against Luis Santos at ONE: Valor of Champions on Apr 24, 2015 1. def. Agilan Thani at ONE: Dynasty of Heroes on May 26, 2017 2. def. Zebaztian Kadestam at ONE: Shanghai on Sep 2, 2017 3. def. Shinya Aoki at ONE: Immortal Pursuit on Nov 24, 2017 |
| Askren vacated the title on October 27, 2018 when he was released from his contract. ||||||
| 3 | Zebaztian Kadestam def. Tyler McGuire | ONE: Warrior's Dream Jakarta, Indonesia | Nov 17, 2018 | 342 days | 1. def. Georgiy Kichigin at ONE: Reign of Valor on Mar 8, 2019 |
| 4 | Kiamrian Abbasov | ONE: Dawn Of Valor Jakarta, Indonesia | Oct 25, 2019 | 1119 days | 1. def. James Nakashima at ONE: Inside the Matrix 2 on Nov 6, 2020 |
| Abbasov was stripped of the title on November 17, 2022, after failing to make weight for his title defense against Christian Lee at ONE on Prime Video 4. ||||||
| 5 | Christian Lee def. Kiamrian Abbasov | ONE on Prime Video 4 Kallang, Singapore | Nov 19, 2022 | 840 days (incumbent) | |
| Submission grappling ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Tye Ruotolo def. Magomed Abdulkadirov | ONE Fight Night 16 Bangkok, Thailand | Nov 4, 2023 | 490 days (incumbent) | 1. def. Izaak Michell at ONE Fight Night 21 on Apr 6, 2024 |

### Lightweight World Championship

       Weight limit: 170 lb (77.1 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Kotetsu Boku def. Zorobabel Moreira | ONE: Rise of Kings Kallang, Singapore | Oct 6, 2012 | 181 days | |
| 2 | Shinya Aoki | ONE: Kings and Champions Kallang, Singapore | Apr 5, 2013 | 1316 days | 1. def. Kamal Shalorus at ONE: Reign of Champions on Aug 29, 2014 2. def. Koji Ando at ONE: Warrior's Quest on May 22, 2015 |
| 3 | Eduard Folayang | ONE: Defending Honor Kallang, Singapore | Nov 11, 2016 | 364 days | 1. def. Ev Ting at ONE: Kings of Destiny on Apr 21, 2017 |
| 4 | Martin Nguyen | ONE: Legends of the World Pasay, Philippines | Nov 10, 2017 | 322 days | |
| Nguyen vacated the title on September 28, 2018 due to suffering an injury in training, rendering him unable to defend the title. ||||||
| 5 | Eduard Folayang (2) def. Amir Khan | ONE: Conquest of Champions Pasay, Philippines | Nov 23, 2018 | 128 days (492 days) | |
| 6 | Shinya Aoki (2) | ONE: A New Era Tokyo, Japan | Mar 31, 2019 | 47 days (1410 days) | |
| 7 | Christian Lee | ONE: Enter the Dragon Kallang, Singapore | May 17, 2019 | 861 days | 1. def. Iuri Lapicus at ONE: Inside the Matrix on Oct 30, 2020 2. def. Timofey Nastyukhin at ONE on TNT 2 on Apr 14, 2021 |
| 8 | Ok Rae-yoon | ONE: Revolution Kallang, Singapore | Sep 24, 2021 | 336 days | |
| 9 | Christian Lee (2) | ONE 160 Kallang, Singapore | Aug 26, 2022 | 925 days (incumbent) | NC. against Alibeg Rasulov at ONE Fight Night 26 on Dec 7, 2024 |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Regian Eersel def. Nieky Holzken | ONE: Enter the Dragon Kallang, Singapore | May 17, 2019 | 1786 days | 1. def. Nieky Holzken at ONE: Dawn Of Valor on Oct 25, 2019 2. def. Mustapha Haida at ONE: Fists Of Fury 3 on Feb 26, 2021 3. def. Islam Murtazaev at ONE: Winter Warriors on Dec 3, 2021 4. def. Arian Sadiković at ONE 156 on Apr 22, 2022 |
| 2 | Alexis Nicolas | ONE Fight Night 21 Bangkok, Thailand | April 6, 2024 | 182 days | |
| 3 | Regian Eersel (2) | ONE Fight Night 25 Bangkok, Thailand | Oct 5, 2024 | 154 days (incumbent) | |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Regian Eersel def. Sinsamut Klinmee | ONE on Prime Video 3 Kuala Lumpur, Malaysia | Oct 22, 2022 | 868 days (incumbent) | 1. def. Sinsamut Klinmee at ONE Friday Fights 9 on Mar 17, 2023 2. def. Dmitry Menshikov at ONE Fight Night 11 on June 9, 2023 |
| Submission grappling ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Kade Ruotolo def. Uali Kurzhev | ONE on Prime Video 3 Kuala Lumpur, Malaysia | Oct 22, 2022 | 868 days (incumbent) | 1. def. Matheus Gabriel at ONE on Prime Video 5 on Dec 3, 2022 2. def. Tommy Langaker at ONE Fight Night 11 on June 9, 2023 3. def. Tommy Langaker at ONE 165 on January 28, 2024 |

### Featherweight World Championship

       Weight limit: 155 lb (70.3 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Honorio Banario def. Eric Kelly | ONE: Return of Warriors Kuala Lumpur, Malaysia | Feb 2, 2013 | 118 days | |
| 2 | Koji Oishi | ONE FC: Rise to Power Pasay, Philippines | May 31, 2013 | 455 days | 1. def. Honorio Banario at ONE: Moment of Truth on Dec 6, 2013 |
| 3 | Jadamba Narantungalag | ONE: Reign of Champions Dubai, United Arab Emirates | Aug 29, 2014 | 449 days | |
| — | Marat Gafurov def. Martin Nguyen for interim title | ONE: Odyssey of Champions Jakarta, Indonesia | Sep 27, 2015 | — | |
| 4 | Marat Gafurov | ONE: Dynasty of Champions 3 Beijing, China | Nov 21, 2015 | 636 days | 1. def. Kazunori Yokota at ONE: Kingdom of Champions on May 27, 2016 2. def. Jadamba Narantungalag at ONE: Defending Honor on Nov 11, 2016 |
| 5 | Martin Nguyen | ONE: Quest for Greatness Kuala Lumpur, Malaysia | Aug 18, 2017 | 1169 days | 1. def. Christian Lee at ONE: Unstoppable Dreams on May 18, 2018. 2. def. Jadamba Narantungalag at ONE: Roots of Honor on Apr 12, 2019 3. def. Koyomi Matsushima at ONE: Dawn of Heroes on Aug 2, 2019 |
| 6 | Thanh Le | ONE: Inside the Matrix Kallang, Singapore | Oct 30, 2020 | 665 days | 1. def. Garry Tonon at ONE: Lights Out on Mar 11, 2022 |
| 7 | Tang Kai | ONE 160 Kallang, Singapore | Aug 26, 2022 | 925 days (incumbent) | 1. def. Interim champion Thanh Le at ONE 166 on Mar 1, 2024 |
| — | Thanh Le def. Ilya Freymanov for interim title | ONE Fight Night 15 Bangkok, Thailand | Oct 7, 2023 | — | |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Superbon Singha Mawynn def. Giorgio Petrosyan | ONE: First Strike Kallang, Singapore | Oct 15, 2021 | 456 days | 1. def. Marat Grigorian on ONE: X at Mar 26, 2022 |
| 2 | Chingiz Allazov | ONE Fight Night 6 Bangkok, Thailand | Jan 14, 2023 | 595 days | 1. def. Marat Grigorian at ONE Fight Night 13 on Aug 5, 2023 |
| — | Superbon Singha Mawynn def. Marat Grigorian for interim title | ONE Friday Fights 58 Bangkok, Thailand | Apr 5, 2024 | — | |
| Allazov vacated the title on August 31, 2024, when he was released from his contract. Interim champion Superbon was officially promoted to undisputed champion on January 6, 2025. ||||||
| 3 | Superbon Singha Mawynn (2) promoted to undisputed champion | – | Jan 6, 2025 | 61 days (incumbent) |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Petchmorakot Petchyindee def. Pongsiri P.K.Saenchai | ONE: Warrior's Code Jakarta, Indonesia | Feb 7, 2020 | 965 days | 1. def. Yodsanklai Fairtex at ONE: No Surrender on Jul 31, 2020 2. def. Magnus Andersson at ONE: A New Breed 3 on Sep 18, 2020 3. def. Jimmy Vienot at ONE 157 on May 20, 2022 |
| 2 | Tawanchai P.K.Saenchai | ONE 161 Kallang, Singapore | Sep 29, 2022 | 891 days (incumbent) | 1. def. Jamal Yusupov at ONE Fight Night 7 on Feb 25, 2023 2. def. Superbon Singha Mawynn at ONE Friday Fights 46 on Dec 22, 2023 3. def. Jo Nattawut at ONE 167 on Jun 7, 2024 4. def. Superbon Singha Mawynn at ONE 170 on Jan 24, 2025 |

### Bantamweight World Championship

       Weight limit: 145 lb (65.8 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Kim Soo-chul def. Leandro Issa | ONE FC: Rise of Kings Kallang, Singapore | Oct 6, 2012 | 377 days | |
| — | Bibiano Fernandes def. Koetsu Okazaki for interim title | ONE FC: Rise to Power Pasay, Philippines | May 31, 2013 | — | |
| 2 | Bibiano Fernandes | ONE FC: Total Domination Kallang, Singapore | Oct 18, 2013 | 1848 days | 1. def. Masakatsu Ueda at ONE FC: Rise of Heroes on May 2, 2014 2. def. Kim Dae-hwan at ONE FC: Warrior's Way on Dec 5, 2014 3. def. Toni Tauru at ONE: Kingdom of Warriors on Jul 18, 2015 4. def. Kevin Belingon at ONE: Dynasty of Champions (Changsha) on Jan 23, 2016 5. def. Reece McLaren at ONE: Age of Domination on Dec 2, 2016 6. def. Andrew Leone at ONE: Kings & Conquerors on Aug 5, 2017 7. def. Martin Nguyen at ONE: Iron Will on Mar 24, 2018 |
| — | Kevin Belingon def. Martin Nguyen for interim title | ONE: Reign of Kings Pasay, Philippines | Jul 27, 2018 | — | |
| 3 | Kevin Belingon | ONE: Heart of the Lion Kallang, Singapore | Nov 9, 2018 | 142 days | |
| 4 | Bibiano Fernandes (2) | ONE: A New Era Tokyo, Japan | Mar 31, 2019 | 1076 days | 1. def. Kevin Belingon at ONE: Century − Part 2 on Oct 13, 2019 |
| 5 | John Lineker | ONE: Lights Out Kallang, Singapore | Mar 11, 2022 | 223 days | |
| Lineker was stripped of the title on October 20, 2022, after failing to make weight for his title defense against Fabrício Andrade at ONE on Prime Video 3. ||||||
| 6 | Fabrício Andrade def. John Lineker | ONE Fight Night 7 Bangkok, Thailand | Feb 25, 2023 | 742 days (incumbent) | 1. def. Kwon Won-il at ONE 170 on Jan 24, 2025 |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Alaverdi Ramazanov def. Zhang Chenglong | ONE: Mark of Greatness Kuala Lumpur, Malaysia | Dec 6, 2019 | 413 days | |
| 2 | Capitan Petchyindee | ONE: Unbreakable Kallang, Singapore | Jan 22, 2021 | 428 days | 1. def. Mehdi Zatout at ONE: Revolution on Sep 24, 2021 |
| 3 | Hiroki Akimoto | ONE: X Kallang, Singapore | Mar 26, 2022 | 238 days | |
| 4 | Petchtanong Petchfergus | ONE 163 Kallang, Singapore | Nov 19, 2022 | 249 days | |
| Petchtanong was stripped of the title on July 26, 2023, due to tested positive for both metenolone and noldenone, which is a banned substance according to International Doping Tests & Management. ||||||
| 5 | Jonathan Haggerty def. Fabrício Andrade | ONE Fight Night 16 Bangkok, Thailand | Nov 4, 2023 | 490 days (incumbent) | 1. def Wei Rui at ONE 171: Qatar on Feb 20, 2025 |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Nong-O Gaiyanghadao def. Han Zihao | ONE: Clash of Legends Bangkok, Thailand | Feb 16, 2019 | 1526 days | 1. def. Hiroaki Suzuki at ONE: Warriors of Light on May 10, 2019 2. def. Brice Delval at ONE: Immortal Triumph on Sep 6, 2019 3. def. Saemapetch Fairtex at ONE: Edge Of Greatness on Nov 22, 2019 4. def. Rodlek P.K. Saenchai at ONE: Collision Course on Dec 18, 2020 5. def. Felipe Lobo at ONE: X on Mar 26, 2022 6. def. Liam Harrison at ONE on Prime Video 1 on Aug 27, 2022 7. def. Alaverdi Ramazanov at ONE Friday Fights 1 on Jan 20, 2023 |
| 2 | Jonathan Haggerty | ONE Fight Night 9 Bangkok, Thailand | Apr 22, 2023 | 503 days | 1. def. Felipe Lobo at ONE Fight Night 19 on Feb 17, 2024 |
| 3 | Superlek Kiatmuu9 | ONE 168 Denver, CO, U.S. | Sep 6, 2024 | 183 days (incumbent) | |
| – | Nabil Anane def. Nico Carrillo for interim title | ONE 170 Bangkok, Thailand | Jan 24, 2025 | 43 days (incumbent) | |

### Flyweight World Championship

       Weight limit: 135 lb (61.2 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Adriano Moraes def. Geje Eustaquio | ONE: Rise of the Kingdom Phnom Penh, Cambodia | Sep 12, 2014 | 435 days | 1. def. Riku Shibuya at ONE: Age of Champions on Mar 13, 2015 |
| 2 | Kairat Akhmetov | ONE: Dynasty of Champions 3 Beijing, China | Nov 21, 2015 | 623 days | |
| — | Adriano Moraes def. Tilek Batyrov for interim title | ONE: Heroes of the World Macau, SAR, China | Aug 13, 2016 | — | |
| 3 | Adriano Moraes (2) | ONE: Kings & Conquerors Macau, SAR, China | Aug 5, 2017 | 322 days (757 days) | 1. def. Danny Kingad at ONE: Legends of the World on Nov 10, 2017 |
| — | Geje Eustaquio def. Kairat Akhmetov for interim title | ONE: Global Superheroes Pasay, Philippines | Jan 26, 2018 | — | |
| 4 | Geje Eustaquio | ONE: Pinnacle of Power Beijing, China | Jun 23, 2018 | 216 days | |
| 5 | Adriano Moraes (3) | ONE: Hero's Ascent Pasay, Philippines | Jan 25, 2019 | 1310 days (2067 days) | 1. def. Demetrious Johnson at ONE on TNT 1 on Apr 7, 2021 2. def. Yuya Wakamatsu at ONE: X on Mar 26, 2022 |
| 6 | Demetrious Johnson | ONE on Prime Video 1 Kallang, Singapore | Aug 27, 2022 | 741 days | 1. def. Adriano Moraes at ONE Fight Night 10 on May 5, 2023 |
| Johnson announced his retirement from MMA during at ONE 168 on September 6, 2024. ||||||
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Petchdam Petchyindee def. Elias Mahmoudi | ONE: Warriors of Light Bangkok, Thailand | May 10, 2019 | 98 days | |
| 2 | Ilias Ennahachi | ONE: Dreams of Gold Bangkok, Thailand | Aug 16, 2019 | 1236 days | 1. def. Wang Wenfeng at ONE: Age Of Dragons on Nov 16, 2019 2. def. Superlek Kiatmuukao at ONE: Fists Of Fury on Feb 26, 2021 |
| Ennahachi vacated the belt on January 3, 2023, due to his inability to make the flyweight limit of 135 pounds while hydrated. ||||||
| 3 | Superlek Kiatmuukao def. Daniel Puertas Gallardo | ONE Fight Night 6 Bangkok, Thailand | Jan 14, 2023 | 784 days (incumbent) | 1. def. Danial Williams at ONE Fight Night 8 on Mar 25, 2023 2. def. Takeru Segawa at ONE 165 on Jan 28, 2024 |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Sam-A Gaiyanghadao def. Sergio Wielzen | ONE: Unstoppable Dreams Kallang, Singapore | May 18, 2018 | 351 days | |
| 2 | Jonathan Haggerty | ONE: For Honor Jakarta, Indonesia | May 4, 2019 | 90 days | |
| 3 | Rodtang Jitmuangnon | ONE: Dawn of Heroes Pasay, Philippines | Aug 2, 2019 | 1924 days | 1. def. Walter Gonçalves at ONE: Century − Part 2 on Oct 13, 2019 2. def. Jonathan Haggerty at ONE: A New Tomorrow on Jan 10, 2020 3. def. Petchdam Petchyindee at ONE: No Surrender on Jul 31, 2020 4. def. Joseph Lasiri at ONE on Prime Video 4 on Nov 19, 2022 5. def. Edgar Tabares at ONE Fight Night 10 on May 5, 2023 |
| Rodtang was stripped of the title on November 7, 2024, after failing to make weight for his title defense against Jacob Smith at ONE 169. ||||||
| Submission grappling ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Mikey Musumeci def. Cleber Souza | ONE on Prime Video 2 Kallang, Singapore | Oct 1, 2022 | 705 days | 1. def. Gantumur Bayanduuren at ONE Fight Night 6 on Jan 14, 2023 2. def. Osamah Almarwai at ONE Fight Night 10 on May 5, 2023 3. def. Jarred Brooks at ONE Fight Night 13 on August 5, 2023 |
| Musumeci was stripped of the title on September 5, 2024, after failing to make weight for his title defense against Bebeto Oliveira at ONE 168. ||||||

### Strawweight World Championship

       Weight limit: 125 lb (56.7 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Dejdamrong Sor Amnuaysirichoke def. Roy Doliguez | ONE: Warrior's Quest Kallang, Singapore | May 22, 2015 | 371 days | |
| 2 | Yoshitaka Naito | ONE: Kingdom of Champions Bangkok, Thailand | May 27, 2016 | 561 days | 1. def. Joshua Pacio at ONE: State of Warriors on Oct 7, 2016 |
| 3 | Alex Silva | ONE: Warriors of the World Bangkok, Thailand | Dec 9, 2017 | 154 days | |
| 4 | Yoshitaka Naito (2) | ONE: Grits And Glory Jakarta, Indonesia | May 12, 2018 | 133 days (694 days) | |
| 5 | Joshua Pacio | ONE: Conquest of Heroes Jakarta, Indonesia | Sep 22, 2018 | 119 days | |
| 6 | Yosuke Saruta | ONE: Eternal Glory Jakarta, Indonesia | Jan 19, 2019 | 83 days | |
| 7 | Joshua Pacio (2) | ONE: Roots of Honor Pasay, Philippines | Apr 12, 2019 | 1331 days (1450 days) | 1. def. Rene Catalan at ONE: Masters Of Fate on Nov 8, 2019 2. def. Alex Silva at ONE: Fire & Fury on Jan 31, 2020 3. def. Yosuke Saruta at ONE: Revolution on Sep 24, 2021 |
| 8 | Jarred Brooks | ONE 164 Pasay, Philippines | Dec 3, 2022 | 454 days | |
| 9 | Joshua Pacio (3) | ONE 166 Lusail, Qatar | Mar 1, 2024 | 372 days (incumbent) | 1. def Interim Champion Jarred Brooks at ONE 171: Qatar on Feb 20, 2025 |
| — | Jarred Brooks def. Gustavo Balart for interim title | ONE Fight Night 24 Bangkok, Thailand | Aug 3, 2024 | 217 days | |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Sam-A Gaiyanghadao def. Wang Junguang | ONE: Mark Of Greatness Kuala Lumpur, Malaysia | Dec 6, 2019 | 806 days | |
| Sam-A vacated the title on February 19, 2022 due to retirement. ||||||
| 2 | Jonathan Di Bella def. Zhang Peimian | ONE 162 Kuala Lumpur, Malaysia | Oct 21, 2022 | 531 days | 1. def. Danial Williams at ONE Fight Night 15 on Oct 7, 2023 |
| Di Bella was stripped of the title on April 4, 2024, after failing to make hydration for his title defense against Prajanchai P.K.Saenchai at ONE Friday Fights 58. He was stripped of his title after failing to meet the required hydration levels at the weigh-ins. ||||||
| 3 | Prajanchai P.K.Saenchai def. Jonathan Di Bella | ONE Friday Fights 68 Bangkok, Thailand | Jun 28, 2024 | 253 days (incumbent) | |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Sam-A Gaiyanghadao def. Rocky Ogden | ONE: King of the Jungle Kallang, Singapore | Feb 28, 2020 | 518 days | 1. def. Josh Tonna at ONE: Reign of Dynasties on Oct 9, 2020 |
| 2 | Prajanchai P.K.Saenchai | ONE: Battleground Kallang, Singapore | Jul 30, 2021 | 294 days | |
| 3 | Joseph Lasiri | ONE 157 Kallang, Singapore | May 20, 2022 | 581 days | |
| — | Prajanchai P.K.Saenchai def. Sam-A Gaiyanghadao for interim title | ONE Friday Fights 22 Bangkok, Thailand | Jun 23, 2023 | — | |
| 4 | Prajanchai P.K.Saenchai (2) | ONE Friday Fights 46 Bangkok, Thailand | Dec 22, 2023 | 442 days (incumbent) | 1. def Ellis Barboza at ONE Fight Night 28 on February 7, 2025 |

## Women's championship history
### Women's Strawweight World Championship

       Weight limit: 125 lb (56.7 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Xiong Jing Nan def. Tiffany Teo | ONE: Kings of Courage Jakarta, Indonesia | Jan 20, 2018 | 2604 days (incumbent) | 1. def. Laura Balin at ONE: Pinnacle of Power on Jun 23, 2018 2. def. Samara Santos at ONE: Beyond the Horizon on Sep 8, 2018 3. def. Angela Lee at ONE: A New Era on Mar 31, 2019 4. def. Tiffany Teo at ONE: Inside the Matrix on Oct 3, 2020 5. def. Michelle Nicolini at ONE: Empower on Sep 3, 2021 6. def. Ayaka Miura at ONE: Heavy Hitters on Jan 14, 2022 7. def. Angela Lee at ONE on Prime Video 2 on Oct 1, 2022 |
| Kickboxing ||||||
| 1 | Jackie Buntan def. Anissa Meksen | ONE 169 Bangkok, Thailand | Nov 9, 2024 | 119 days (incumbent) | |
| Muay Thai ||||||
| 1 | Smilla Sundell def. Jackie Buntan | ONE 156 Kallang, Singapore | Apr 22, 2022 | 741 days | 1. def. Allycia Rodrigues at ONE Fight Night 14 on Sep 30, 2023 |
| Sundell was stripped of the title on May 2, 2024, after failing to make weight for her title defense against Natalia Diachkova at ONE Fight Night 22. ||||||

### Women's Atomweight World Championship

       Weight limit: 115 lb (52.2 kg)
Mixed martial arts (MMA) :
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Angela Lee def. Mei Yamaguchi | ONE: Ascent to Power Kallang, Singapore | May 6, 2016 | 2703 days | 1. def. Jenny Huang at ONE: Warrior Kingdom on Mar 11, 2017 2. def. Istela Nunes at ONE: Dynasty of Heroes on May 26, 2017 3. def. Mei Yamaguchi at ONE: Unstoppable Dreams on May 18, 2018 4. def. Xiong Jing Nan at ONE: Century − Part 1 on Oct 13, 2019 5. def. Stamp Fairtex at ONE: X on Mar 26, 2022 |
| Lee vacated the title on September 30, 2023 due to retirement from MMA at ONE Fight Night 14. ||||||
| 2 | Stamp Fairtex def. Ham Seo-hee | ONE Fight Night 14 Kallang, Singapore | Sep 30, 2023 | 525 days (incumbent) | |
| — | Denice Zamboanga def. Alyona Rassohyna for interim title | ONE Fight Night 27 Bangkok, Thailand | Jan 11, 2025 | 56 days (incumbent) | |
| Kickboxing ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Chuang Kai Ting def. Yodcherry Sityodtong | ONE: Battle for the Heavens Guangzhou, China | Jul 7, 2018 | 91 days | |
| 2 | Stamp Fairtex | ONE: Kingdom of Heroes Bangkok, Thailand | Oct 6, 2018 | 510 days | |
| 3 | Janet Todd | ONE: King of the Jungle Kallang, Singapore | Feb 28, 2020 | 1471 days | |
| — | Phetjeeja Lukjaoporongtom def. Anissa Meksen for interim title | ONE Friday Fights 46 Bangkok, Thailand | Dec 22, 2023 | — | |
| 4 | Phetjeeja Lukjaoporongtom | ONE Fight Night 20 Bangkok, Thailand | Mar 9, 2024 | 364 days (incumbent) | |
| Muay Thai ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Stamp Fairtex def. Janet Todd | ONE: Call to Greatness Kallang, Singapore | Feb 22, 2019 | 553 days | 1. def. Alma Juniku at ONE: Legendary Quest on Jun 15, 2019 |
| 2 | Allycia Rodrigues | ONE: A New Breed Bangkok, Thailand | Aug 28, 2020 | 1653 days (incumbent) | 1. def. interim champion Janet Todd at ONE Fight Night 8 on Mar 25, 2023 2. def. Cristina Morales at ONE Fight Night 20 on Mar 9, 2024 3. def. Marie McManamon at ONE Fight Night 29 on Mar 8, 2025 |
| — | Janet Todd def. Lara Fernandez for interim title | ONE 159 Kallang, Singapore | Jul 22, 2022 | — | |
| Submission grappling ||||||
| No. | Name | Event | Date | Reign | Defenses |
| 1 | Danielle Kelly def. Jessa Khan | ONE Fight Night 14 Kallang, Singapore | Sep 30, 2023 | 308 days |
| 2 | Mayssa Bastos | ONE Fight Night 24 Bangkok, Thailand | Aug. 3, 2024 | 217 days (incumbent) | 1. def. Danielle Kelly at ONE Fight Night 26 on Dec 6th, 2024 |

## Tournament winners

| Event | Date | Division | Winner | Runner-up |
| ONE FC: Rise to Power | May 31, 2013 | Bantamweight | Masakatsu Ueda | Kevin Belingon |
| ONE FC: Warrior Spirit | Nov 15, 2013 | Malaysia Featherweight | A.J. Lias Mansor | Melvin Yeoh |
| ONE FC: Rise of the Kingdom | Sep 12, 2014 | Cambodia Featherweight | Samang Dun | Chan Rothana |
| ONE FC: Dynasty of Champions | Dec 19, 2014 | Beijing Featherweight | Li Kaiwen | Wang Yawei |
| ONE FC: Dynasty of Champions | Dec 19, 2014 | Beijing Flyweight | Li Weibin | Wang Wei |
| ONE: Dynasty of Champions 2 | Jun 20, 2015 | Guangzhou Featherweight | Huang Diyuan | Ma Jiawen |
| ONE: Dynasty of Champions 2 | Jun 20, 2015 | Guangzhou Flyweight | Wu Ze | Yang Jianbing |
| ONE: Kingdom of Warriors | Jul 18, 2015 | Myanmar Featherweight | Tha Pyay Nyo | Myo Man Thit |
| ONE: Kingdom of Warriors | Jul 18, 2015 | Myanmar Lightweight | Thway Thit Aung | Saw Ba Oo |
| ONE: Dynasty of Champions 3 | Nov 21, 2015 | Beijing Featherweight Tournament | Yang Sen | Zhang Jiacai |
| ONE: Dynasty of Champions 4 | Jan 23, 2016 | Changsha Bantamweight | Ma Haobin | Huoyou Gabu |
| ONE: Dynasty of Champions 6 | Jul 2, 2016 | Hefei Flyweight | Huoyou Gabu | Li Haojie |
| ONE: State of Warriors | Oct 7, 2016 | Myanmar Featherweight | Phoe Thaw | Saw Yan Paing |
| ONE: Light of a Nation | Jun 30, 2017 | Myanmar Flyweight | Saw Min Min | Shwe Kyaung Thar |
| ONE: Century – Part 1 | Oct 13, 2019 | Lightweight | Christian Lee | Saygid Guseyn Arslanaliev |
| ONE: Century – Part 1 | Oct 13, 2019 | Flyweight | Demetrious Johnson | Danny Kingad |
| ONE: Century – Part 2 | Oct 13, 2019 | Featherweight Kickboxing | Giorgio Petrosyan | Samy Sana |
| ONE: A New Breed | Aug 28, 2020 | Bantamweight Muay Thai | Rodlek P.K.Saenchai | Kulabdam Sor.Jor.Piek-U-Thai |
| ONE: Winter Warriors | Dec 3, 2021 | Women's Atomweight | Stamp Fairtex | Ritu Phogat |
| ONE: X | Mar 26, 2022 | Featherweight Kickboxing | Chingiz Allazov | Sitthichai Sitsongpeenong |
| ONE 163 | Nov 19, 2022 | Heavyweight Kickboxing | Roman Kryklia | Iraj Azizpour |

## Records
### Most wins in title bouts

| Title wins | Champion | Weight class | W | D | NC | L |
| 11 | Bibiano Fernandes | Bantamweight of MMA | 11 | 0 | 0 | 2 |
| 9 | Regian Eersel | Lightweight of Kickboxing Lightweight of Muay Thai | 6 3 | 0 0 | 0 0 | 1 0 |
| 8 | Adriano Moraes | Flyweight of MMA | 8 | 0 | 0 | 4 |
| 8 | Xiong Jing Nan | Women's Strawweight of MMA Women's Atomweight of MMA | 8 0 | 0 0 | 0 0 | 0 1 |
| 8 | Nong-O Gaiyanghadao | Bantamweight of Muay Thai | 8 | 0 | 0 | 1 |
| 6 | Aung La Nsang | Light Heavyweight of MMA Middleweight of MMA | 2 4 | 0 0 | 0 0 | 1 2 |
| 6 | Angela Lee | Women's Strawweight of MMA Women's Atomweight of MMA | 0 6 | 0 0 | 0 0 | 2 0 |
| 6 | Rodtang Jitmuangnon | Flyweight of Muay Thai | 6 | 0 | 0 | 0 |
| 5 | Martin Nguyen | Lightweight of MMA Featherweight of MMA Bantamweight of MMA | 1 4 0 | 0 0 0 | 0 0 0 | 0 2 2 |
| 5 | Joshua Pacio | Strawweight of MMA | 5 | 0 | 0 | 3 |
| 5 | Christian Lee | Welterweight of MMA Lightweight of MMA Featherweight of MMA | 1 4 0 | 0 0 0 | 0 0 0 | 0 1 1 |
| 4 | Anatoly Malykhin | Heavyweight of MMA Light Heavyweight of MMA Middleweight of MMA | 2 1 1 | 0 0 0 | 0 0 0 | 1 0 0 |
| 4 | Shinya Aoki | Welterweight of MMA Lightweight of MMA | 0 4 | 0 0 | 0 0 | 1 2 |
| 4 | Sam-A Gaiyanghadao | Strawweight of Kickboxing Flyweight of Muay Thai Strawweight of Muay Thai | 1 1 2 | 0 0 0 | 0 0 0 | 0 1 1 |
| 4 | Marat Gafurov | Featherweight of MMA | 4 | 0 | 0 | 1 |
| 4 | Ben Askren | Welterweight of MMA | 4 | 0 | 1 | 0 |
| 4 | Reinier de Ridder | Light Heavyweight of MMA Middleweight of MMA | 1 3 | 0 0 | 0 0 | 1 1 |
| 4 | Petchmorakot Petchyindee | Featherweight of Muay Thai | 4 | 0 | 0 | 1 |
| 4 | Mikey Musumeci | Flyweight of Submission grappling | 4 | 0 | 0 | 0 |

### Most consecutive title defenses

| Defenses | Champion | Division | Period |
| 7 | Bibiano Fernandes | Bantamweight of MMA | October 13, 2013 — July 27, 2018 |
| 7 | Xiong Jing Nan | Women's Strawweight of MMA | January 20, 2018 — present |
| 7 | Nong-O Gaiyanghadao | Bantamweight of Muay Thai | February 16, 2019 — April 22, 2023 |
| 5 | Angela Lee | Women's Atomweight of MMA | May 6, 2016 — September 30, 2023 |
| 5 | Rodtang Jitmuangnon | Flyweight of Muay Thai | August 2, 2019 — November 7, 2024 |
| 4 | Regian Eersel | Lightweight of Kickboxing | May 17, 2019 — present |
| 3 | Ben Askren | Welterweight of MMA | August 29, 2014 — October 24, 2018 |
| 3 | Aung La Nsang | Middleweight of MMA | June 30, 2017 — October 30, 2020 |
| 3 | Martin Nguyen | Featherweight of MMA | August 18, 2017 — October 30, 2020 |
| 3 | Petchmorakot Petchyindee | Featherweight of Muay Thai | February 7, 2020 — September 29, 2022 |
| 3 | Joshua Pacio | Strawweight of MMA | April 12, 2019 — December 3, 2022 |
| 3 | Mikey Musumeci | Flyweight of Submission Grappling | October 1, 2022 — September 5, 2024 |

### Multi-division champions

* Interim title
| No. | Champion | Division | Won | Lost | Defenses | Reign | Total Reign |
| 1 | Martin Nguyen | Lightweight of MMA | November 10, 2017 (ONE: Legends of the World) | September 28, 2018 (Stripped) | 0 | 322 days | 1491 days |
| 1 | Martin Nguyen | Featherweight of MMA | August 18, 2017 (ONE: Quest for Greatness) | October 30, 2020 (ONE: Inside the Matrix) | 3 | 1169 days | 1491 days |
| 2 | Aung La Nsang | Light Heavyweight of MMA | February 23, 2018 (ONE: Quest for Gold) | April 28, 2021 (ONE on TNT 4) | 1 | 1161 days | 2379 days |
| 2 | Aung La Nsang | Middleweight of MMA | June 30, 2017 (ONE: Light of a Nation) | October 30, 2020 (ONE: Inside the Matrix) | 3 | 1218 days | 2379 days |
| 3 | Sam-A Gaiyanghadao | Strawweight of Kickboxing | December 6, 2019 (ONE: Mark Of Greatness) | February 19, 2022 (Retirement) | 0 | 806 days | 1674 days |
| 3 | Sam-A Gaiyanghadao | Flyweight of Muay Thai | May 18, 2018 (ONE: Unstoppable Dreams) | May 4, 2019 (ONE: For Honor) | 0 | 350 days | 1674 days |
| 3 | Sam-A Gaiyanghadao | Strawweight of Muay Thai | February 28, 2020 (ONE: King of the Jungle) | 30 July 2021 (ONE: Battleground) | 1 | 518 days | 1674 days |
| 4 | Stamp Fairtex | Women's Atomweight of Kickboxing | October 6, 2018 (ONE: Kingdom of Heroes) | February 28, 2020 (ONE: King of the Jungle) | 0 | 510 days | 1063 days |
| 4 | Stamp Fairtex | Women's Atomweight of Muay Thai | February 22, 2019 (ONE: Call to Greatness) | August 28, 2020 (ONE: A New Breed) | 1 | 553 days | 1063 days |
| 5 | Reinier de Ridder | Light Heavyweight of MMA | April 28, 2021 (ONE on TNT 4) | December 3, 2022 (ONE on Prime Video 5) | 0 | 584 days | 3000 days |
| 5 | Reinier de Ridder | Middleweight of MMA | October 30, 2020 (ONE: Inside the Matrix) | March 1, 2024 (ONE 166) | 2 | 1590 days | 3000 days |
| 6 | Regian Eersel | Lightweight of Muay Thai | October 22, 2022 (ONE on Prime Video 3) | Present | 0 | 868 days | 2990 days |
| 6 | Regian Eersel | Lightweight of Kickboxing | May 17, 2019 (ONE: Enter the Dragon) | Present | 4 | 2122 days | 2990 days |
| 7 | Christian Lee | Welterweight of MMA | November 19, 2022 (ONE on Prime Video 4) | Present | 0 | 840 days | 2626 days |
| 7 | Christian Lee | Lightweight of MMA | August 26, 2022 (ONE 160) | Present | 0 | 925 days | 2626 days |
| 7 | Christian Lee | Lightweight of MMA | May 17, 2019 (ONE: Enter the Dragon) | September 24, 2021 (ONE: Revolution) | 2 | 861 days | 2626 days |
| 8 | Jonathan Haggerty | Bantamweight of Muay Thai | April 22, 2023 (ONE Fight Night 9) | September 7, 2024 (ONE 168) | 0 | 504 days | 776 days |
| 8 | Jonathan Haggerty | Flyweight of Muay Thai | May 4, 2019 (ONE: For Honor) | August 2, 2019 (ONE: Dawn of Heroes) | 0 | 90 days | 776 days |
| 9 | Anatoly Malykhin | Heavyweight of MMA | June 23, 2023 (ONE Friday Fights 22) | November 9, 2024 (ONE 169) | 0 | 505 days | 2319 days |
| 9 | Anatoly Malykhin | Heavyweight of MMA | February 11, 2022 (ONE: Bad Blood) | June 23, 2023 (ONE Friday Fights 22) | 0 | 497 days | 2319 days |
| 9 | Anatoly Malykhin | Light Heavyweight of MMA | December 3, 2022 (ONE on Prime Video 5) | Present | 0 | 826 days | 2319 days |
| 9 | Anatoly Malykhin | Middleweight of MMA | March 1, 2024 (ONE 166) | Present | 0 | 372 days | 2319 days |
| 10 | Prajanchai P.K.Saenchai | Strawweight of Muay Thai | December 22, 2023 (ONE: Friday Fights 46) | Present | 0 | 442 days | 695 days |
| 10 | Prajanchai P.K.Saenchai | Strawweight of Kickboxing | June 28, 2024 (ONE Friday Fights 68) | Present | 0 | 253 days | 695 days |

### Simultaneous two division champions

This table, different from the previous one, only counts the periods in which the fighter loaded the titles simultaneously and the defenses in that period of time.
| No. | Champion | Division | Span | Defenses | Simultaneous Reign |
| 1 | Martin Nguyen | Lightweight of MMA | November 10, 2017 — September 28, 2018 | 0 | 322 days |
| 1 | Martin Nguyen | Featherweight of MMA | November 10, 2017 — September 28, 2018 | 1 | 322 days |
| 2 | Aung La Nsang | Light Heavyweight of MMA | February 23, 2018 — October 30, 2020 | 1 | 980 days |
| 2 | Aung La Nsang | Middleweight of MMA | February 23, 2018 — October 30, 2020 | 3 | 980 days |
| 3 | Sam-A Gaiyanghadao | Strawweight of Kickboxing | February 28, 2020 — July 30, 2021 | 0 | 518 days |
| 3 | Sam-A Gaiyanghadao | Strawweight of Muay Thai | February 28, 2020 — July 30, 2021 | 1 | 518 days |
| 4 | Stamp Fairtex | Women's Atomweight of Kickboxing | February 22, 2019 — February 28, 2020 | 0 | 371 days |
| 4 | Stamp Fairtex | Women's Atomweight of Muay Thai | February 22, 2019 — February 28, 2020 | 1 | 371 days |
| 5 | Reinier de Ridder | Light Heavyweight of MMA | April 28, 2021 — December 3, 2022 | 0 | 584 days |
| 5 | Reinier de Ridder | Middleweight of MMA | April 28, 2021 — December 3, 2022 | 2 | 584 days |
| 6 | Regian Eersel | Lightyweight of Muay Thai | October 22, 2022 — present | 2 | 868 days |
| 6 | Regian Eersel | Lightweight of Kickboxing | October 22, 2022 — present | 4 | 868 days |
| 7 | Christian Lee | Welteryweight of MMA | November 19, 2022 — present | 0 | 841 days |
| 7 | Christian Lee | Lightweight of MMA | November 19, 2022 — present | 0 | 841 days |
| 7 | Anatoly Malykhin | Heavyweight of MMA | June 23, 2023 — November 9, 2024 | 0 | 505 days |
| 7 | Anatoly Malykhin | Light Heavyweight of MMA | June 23, 2023 — November 9, 2024 | 0 | 505 days |
| 8 | Jonathan Haggerty | Bantamweight of Muay Thai | November 4, 2023 — present | 0 | 490 days |
| 8 | Jonathan Haggerty | Bantamweight of Kickboxing | November 4, 2023 — present | 0 | 490 days |
| 9 | Roman Kryklia | Light Heavyweight of Kickboxing | December 8, 2023 — present | 0 | 456 days |
| 9 | Roman Kryklia | Heavyweight of Muay Thai | December 8, 2023 — present | 0 | 456 days |

### Champions by nationality

Fighters with multiple title reigns in a specific division are only counted once. Interim champions who never became linear champions are only listed in parentheses.
| Country | MMA | Kickboxing | Muay Thai | Submission Grappling | Tournament | Total (LC only) |
| United States | 8 | 1 | 0 (1) | 4 | 2 | 13 |
| Brazil | 6 | 0 | 1 | 1 | 0 | 8 |
| Japan | 5 | 1 | 0 | 0 | 1 | 6 |
| Russia | 5 | 1 | 0 | 0 | 0 | 6 |
| Philippines | 5 | 0 | 0 | 0 | 0 | 5 |
| South Korea | 3 | 0 | 0 | 0 | 0 | 3 |
| Thailand | 2 | 8 | 8 | 0 | 2 | 18 |
| Netherlands | 2 | 1 | 0 | 0 | 0 | 3 |
| England | 0 | 1 | 2 | 0 | 0 | 3 |
| China | 2 | 0 | 0 | 0 | 7 | 2 |
| Myanmar | 2 | 0 | 0 | 0 | 4 | 2 |
| Australia | 2 | 0 | 0 | 0 | 0 | 2 |
| Kazakhstan | 2 | 0 | 0 | 0 | 0 | 2 |
| Sweden | 1 | 0 | 1 | 0 | 0 | 2 |
| Canada | 1 | 1 | 0 | 0 | 0 | 2 |
| Ukraine | 0 | 1 | 1 | 0 | 0 | 2 |
| Suriname | 0 | 1 | 1 | 0 | 0 | 2 |
| Senegal | 1 | 0 | 0 | 0 | 0 | 1 |
| Mongolia | 1 | 0 | 0 | 0 | 0 | 1 |
| Kyrgyzstan | 1 | 0 | 0 | 0 | 0 | 1 |
| Italy | 0 | 0 | 1 | 0 | 1 | 1 |
| Belarus | 0 | 1 | 0 | 0 | 1 | 1 |
| Taiwan | 0 | 1 | 0 | 0 | 0 | 1 |
| France | 0 | 1 | 0 | 0 | 0 | 1 |
| Cambodia | 0 | 0 | 0 | 0 | 1 | 0 |
| Malaysia | 0 | 0 | 0 | 0 | 1 | 0 |