This is a list of ONE Championship champions in each weight division of each sport.
Hideki Sekine at ONE: Age of Domination on Dec 2, 2016 2. def.
Mauro Cerilli at ONE: Conquest of Champions on Nov 23, 2018 1. def.
Aung La Nsang at ONE: Quest for Power on Jan 14, 2017 1. def.
Mohammad Karaki at ONE: Pursuit of Greatness on Oct 26, 2018 3. def.
Shinya Aoki at ONE: Immortal Pursuit on Nov 24, 2017 1. def.
Kamal Shalorus at ONE: Reign of Champions on Aug 29, 2014 2. def.
Iuri Lapicus at ONE: Inside the Matrix on Oct 30, 2020 2. def.
Nieky Holzken at ONE: Dawn Of Valor on Oct 25, 2019 2. def.
Islam Murtazaev at ONE: Winter Warriors on Dec 3, 2021 4. def.
Dmitry Menshikov at ONE Fight Night 11 on June 9, 2023 1. def.
Honorio Banario at ONE: Moment of Truth on Dec 6, 2013 1. def.
Jadamba Narantungalag at ONE: Defending Honor on Nov 11, 2016 1. def.
Superbon Singha Mawynn at ONE Friday Fights 46 on Dec 22, 2023 3. 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.
Ayaka Miura at ONE: Heavy Hitters on Jan 14, 2022 7. def.
Xiong Jing Nan at ONE: Century − Part 1 on Oct 13, 2019 5. def.
interim champion Janet Todd at ONE Fight Night 8 on Mar 25, 2023 2. def.
Marie McManamon at ONE Fight Night 29 on Mar 8, 2025 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.
Fighters with multiple title reigns in a specific division are only counted once.