Owen Livesey (born 3 August 1991) is a British judoka, submission wrestler, and mixed martial artist.

[2] He had hoped to be selected to represent Great Britain in judo at the 2012 Olympic Games held in London, but was not, a disappointment which made Livesey ponder his continuation of the sport.

[3] At the 2014 Commonwealth Games held in Glasgow, Scotland, Livesey defeated John Muthee of Kenya in the round of 16.

[12] At the 2022 Catch Wrestling World Championships hosted by The Snake Pit at the University of Bolton Stadium, Livesey won the heavyweight (-100kg) division.

[13] He was given the call to compete with around a week's notice, as Luccas Lira Costa was forced to withdraw due to visa issues.

[18] On March 11, 2023, Livesey was booked to compete against former UFC middleweight champion Chris Weidman in the main event of Polaris 23.

[29] He beat Mahamed Aly by decision in the opening round and was submitted by eventual winner Nick Rodriguez in the quarter-final.

[30] Livesey made his professional mixed martial arts debut in April 2021, beating Liam Gregory by TKO in the first round.