Ok Rae-yoon

Ok Rae-yoon (옥래윤, born March 23, 1991) is a South Korean mixed martial artist currently competing in the Lightweight division of ONE Championship. He is a former ONE Lightweight World Champion.

Early career
Ok started his professional MMA career in 2014 and mainly fought in East Asia, particularly Wu Lin Feng. He amassed a record of 13–3 prior to being signed by ONE Championship.

ONE Championship
Ok faced Marat Gafurov at ONE on TNT 3 on April 21, 2021. He won the bout by unanimous decision.

Ok faced Eddie Alvarez at ONE on TNT 4 on April 28, 2021. He lost a close bout via unanimous decision.

ONE Lightweight Champion
Ok faced defending ONE Lightweight World Champion Christian Lee at ONE Championship: Revolution on September 24, 2021. He won the fight by a unanimous decision to win the title. Due to the controversial nature of the decision, it was reviewed by the ONE Competition Committee which ultimately upheld the result.

Ok faced Lee in a rematch on August 26, 2022, at ONE 160. He lost the bout after been dropped by Lee in the second round and being finished on the ground with knees.

Ok faced Lowen Tynanes at ONE Fight Night 10 on May 5, 2023. He won the bout via unanimous decision.

Ok faced Alibeg Rasulov for the interim ONE Lightweight World Championship on July 6, 2024, at ONE Fight Night 23. He lost the bout by unanimous decision.

Championships and accomplishments

 * ONE Championship
 * ONE Lightweight World Championship (One time)
 * 2021 MMA Fighter of the Year
 * Double G Fighting Championship
 * Double G FC Lightweight Championship (One time)
 * HEAT
 * HEAT Lightweight Championship (One time)
 * One successful title defense
 * HEAT Lightweight Tournament winner