Kayla Harrison


Kayla Jean Harrison is an American professional mixed martial artist and former judoka. She currently competes in the women's Bantamweight division of the Ultimate Fighting Championship, where she is the current UFC Women's Bantamweight Champion. She is the first female fighter to win an Olympic gold medal and a UFC championship. She is also a former two-time Professional Fighters League lightweight champion. As of November 18, 2025, she is #2 in the UFC women's pound-for-pound rankings.
In judo, Harrison won the women’s 78 kg gold medal in the 2010 World Judo Championships and gold medals at the 2012 and 2016 Summer Olympics. She remains the only American judoka to have won a gold medal in Judo at the Summer Olympics and the only one to have won a gold medal in the World Judo Championships. In 2016, she was promoted to Rokudan by the United States Judo Association, becoming the youngest ever to achieve the rank.
After making her MMA debut in 2018, Harrison won the PFL Lightweight World Tournament in 2019 and successfully repeated as champion in 2021. She signed with the UFC in January 2024, defeating former champion Holly Holm in her promotional debut. In June 2025, she captured the UFC Bantamweight Championship via second-round kimura submission of Julianna Peña.
Harrison was inducted into the Martial Arts History Museum Hall of Fame in 2012, the United States Judo Federation Hall of Fame in 2015, and the International Sports Hall of Fame in March 2023.

Early life

Born in Middletown, Ohio, Harrison took up judo at the age of six, having been introduced to the sport by her mother, who was a black belt. She graduated from Middletown High School.
She began training under coach Daniel Doyle, and won two national championships by the age of 15. During that period, Doyle was sexually abusing Harrison, who reported it to another judoka, who in turn told Harrison's mother. She subsequently reported this to the police. Doyle was convicted and sentenced to a ten-year prison term. A month after the abuse was revealed, she moved away from her home in Ohio to Boston to train with Jimmy Pedro and his father.

Career

Judo

Harrison changed weight classes in 2008, from the 63 kg division to the 78 kg division. She could not compete in the 2008 Summer Olympics as the United States had not qualified in that division. She won the 2008 Junior World Championship that year, and the following year placed second, becoming the first American to compete in two Junior World Championships finals.
Harrison won the gold medal in the 78 kg category at the 2010 World Championships, the first American to do so since 1999. At the 2011 World Championships in Paris, she placed third taking the bronze medal. Harrison had lost to the eventual winner, Audrey Tcheuméo of France, in her semi-final.
Prior to the 2012 Summer Olympics in London, Harrison was injured during training, having torn a medial collateral ligament. On August 2, 2012, she won the Olympic title in the 78 kg category, defeating Gemma Gibbons of Britain by two yukos, to become the first American to win an Olympic gold medal in judo. She earned a second Olympic gold medal in the same weight class in 2016 in Rio, defeating Audrey Tcheuméo of France.
In 2015, Harrison was elected to the United States Judo Federation Hall Of Fame and on August 31, 2016, following her second Olympic gold medal, the United States Judo Association promoted Harrison to rokudan making her the youngest person in the US to ever be awarded this rank.

Mixed martial arts

Harrison, a former training partner of fellow judoka Ronda Rousey, announced in October 2016 that she had signed with World Series of Fighting. While she would initially work as a commentator she also indicated she was contracted to fight, in the women's division.

Professional Fighters League

PFL season 2018

Harrison made her MMA debut at PFL 2 on June 21, 2018, against Brittney Elkin in the Women's Lightweight division. She won via submission due to an armbar in the first round.
For her second professional fight, Harrison faced Jozette Cotton at PFL 6 on August 16, 2018. She won the fight via TKO in the third round.
Harrison was on the main card for PFL 11 in 2018 and defeated Moriel Charneski via first-round TKO; after her victory, it appeared that she was not completely content with her own performance.

PFL season 2019

Harrison was expected to headline the first event of PFL's second season against Svetlana Khautova on May 9, 2019. Khautova withdrew from the bout and was replaced by Larissa Pacheco. Harrison won the fight by unanimous decision.
Harrison faced Morgan Frier in the co-main event of PFL 4 on July 11, 2019. She won the fight by key lock submission in the first round. Subsequently, Harrison signed a new long-term contract extension with the PFL.
After becoming second in the preliminary round standing, Harrison secured a position at the playoffs. She was originally scheduled to face number 3 ranked Genah Fabian at PFL 7 on October 11, 2019, but Fabian was forced to pull out of the bout. Fabian was replaced by number 5 Bobbi Jo Dalziel. Harrison would win the fight by an armbar in the first round.
Harrison faced Larissa Pacheco in rematch for the Women's Lightweight final at PFL 10 on December 31, 2019. After dominating every round with her superior grappling, Harrison won the fight by unanimous decision to win the 2019 Women's Lightweight Championship.

PFL season 2020

Harrison was expected to compete in the season 2020 of PFL, but the complete season was cancelled due to the COVID-19 pandemic.

Other promotions

With the 2020 PFL season cancelled, Harrison was handed a contract exemption to sign with the Invicta FC and made her debut in the Featherweight division against Courtney King at Invicta FC 43 on November 20, 2020. She won the fight via TKO in the second round.
Harrison was then expected to compete for Titan FC. She was scheduled to face Jozette Cotton in a rematch on December 17, 2020, at Titan FC 66. The day before the fight, Cotton was hospitalized due to a bad weight cut and the bout was cancelled.

PFL season 2021

Kayla faced Mariana Morais on May 6, 2021, at PFL 3 for the start of the 2021 season. She won the bout via TKO in the first round.
Kayla faced Cindy Dandois on June 25, 2021, at PFL 6. She won the bout in the first round via an arm bar submission.
Kayla faced Genah Fabian in the Semifinals of the Women's Lightweight tournament on August 19, 2021, at PFL 8. She won the bout in the first round via TKO by way of ground and pound.
Kayla faced Taylor Guardado in the Finals of the Women's Lightweight tournament on October 27, 2021, at PFL 10. She won the bout via armbar in the second round.

PFL season 2022

Being one of the most sought-after free agents in the sport, Harrison ended up signing a contract with Bellator MMA in March 2022. However, PFL exercised their matching right, and Harrison re-signed – a deal set to be terminated in December 2023 – with them.
Harrison faced Marina Mokhnatkina on May 6, 2022, at PFL 3. She won the bout via unanimous decision.
Harrison was scheduled to face Julia Budd on July 1, 2022, at PFL 6. However, a week before the event, Budd pulled out due to injury and was replaced by Kaitlin Young. Harrison won the bout, with the referee stoppage at the 2:35 mark of the first round.
Harrison faced Martina Jindrová in the Semifinals off the Women's Lightweight tournament on August 20, 2022, at PFL 9. She won the bout in the first round via arm-triangle choke.
Harrison faced Larissa Pacheco for a third time in the finals of the Women's Lightweight tournament on November 25, 2022, at PFL 10. In an upset, she lost the fight via unanimous decision.

PFL season 2023

After a year hiatus, Harrison was scheduled to face Julia Budd at PFL 10 on November 24, 2023. However, Budd was removed from the fight that she "refused to fulfill her contractual obligation" and was replaced by Aspen Ladd at a catchweight of 150 pounds. Harrison won the fight by unanimous decision.

Ultimate Fighting Championship

On January 23, 2024, Dana White announced that the UFC had signed Harrison and that she would make her promotional debut, as well as her bantamweight debut, against former UFC Women's Bantamweight Champion Holly Holm on April 13, 2024, at UFC 300. Harrison won the fight against Holm by a rear-naked choke submission in the second round.
Harrison faced Ketlen Vieira on October 5, 2024 at UFC 307. She won the fight by unanimous decision.

UFC Bantamweight Champion

Harrison competed for the UFC Women's Bantamweight Championship against two-time champion Julianna Peña on June 7, 2025 at UFC 316. She won the championship via kimura at the end of the second round. This fight earned her a Performance of the Night award. Immediately following the victory, Amanda Nunes entered the octagon to face-off with Harrison.
Harrison was scheduled to defend her title against former two-time champion Amanda Nunes on January 24, 2026 at UFC 324. However, Harrison withdrew from the bout after being diagnosed with herniated discs in her neck, which required surgery. The fight is expected to be rescheduled for a later date.

Personal life

In 2020, Harrison acquired full custody of her niece and nephew, after her stepfather – who had custody of the children at the time – died suddenly. In 2021, Harrison became their legal mother.

Championships and accomplishments

Hall of Fame