yson Luke Fury (born 12 August 1988) is a British professional boxer. He is a two-time heavyweight world champion, having held the WBC, The Ring magazine and lineal titles since defeating Deontay Wilder in February 2020; previously he held the unified WBA (Super), IBF, WBO, IBO, The Ring, and lineal titles after defeating Wladimir Klitschko in 2015. With his defeat of Wilder, Fury became the third heavyweight, after Floyd Patterson and Muhammad Ali, to hold The Ring magazine title twice, and the first heavyweight in history to have held the WBA (Super), WBC, IBF, WBO, and The Ring magazine titles. As of November 2020, he is ranked as the world's best active heavyweight by ESPN, the Transnational Boxing Rankings Board (TBRB), and BoxRec, as well as the second-best active boxer, pound for pound, by BoxRec, fifth by the TBRB, and eighth by ESPN.

As an amateur, Fury represented both England and Ireland, as he was born in Manchester to an Irish Traveller family and traced his family lineage to relatives in Belfast and Galway. He won the ABA super-heavyweight title in 2008 before turning professional later that year at 20 years of age. After winning the English heavyweight title twice, he became the British and Commonwealth champion in 2011 by defeating the 14–0 Derek Chisora. He then won the Irish and WBO Inter-Continental titles, before defeating Chisora again in a 2014 rematch for the European and WBO International heavyweight titles. This success, along with his 24–0 record, set up a match with the long-reigning world champion Klitschko in Germany, which Fury won by unanimous decision.

Fury was stripped of his IBF title 10 days after the Klitschko bout as he was unable to grant a fight with the IBF's mandatory challenger, Vyacheslav Glazkov, due to a rematch clause in his contract with Klitschko. The rematch did not materialise as Fury suffered from mental health issues leading to alcoholism, recreational drug use and extreme weight gain. He was charged with anti-doping violations. In 2016, he vacated the WBA, WBO, and IBO titles; The Ring stripped him of his last remaining title in early 2018. Later that year, after more than two years of inactivity, Fury challenged for the WBC heavyweight title against Wilder. The fight was controversially scored as a draw, with many believing Fury won. Fury's strong performance against Wilder (including recovering from a heavy knockdown in the final round) earned him Comeback of the Year from The Ring and numerous other awards. In the rematch in February 2020, Fury defeated Wilder by a technical knockout in the seventh round after a dominating performance.