A detailed timeline of every UFC champion since the start of the new millennium [UPDATED FEB 2024]

A list of every single UFC champion since the year 2000.
UFC belt
UFC belt / Alex Bierens de Haan/GettyImages
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New UFC champions in 2023

Jan. 14 - Francis Ngannou leaves the UFC after contract negotiations stalled. The UFC heavyweight title is now vacant.

Jan. 21 - UFC 283:

  • Jamahal Hill becomes the first Dana White Contender Series product to become an undisputed UFC champion when he defeated Glover Teixeira at UFC 283 to be the new light heavyweight champion.
  • Brandon Moreno becomes undisputed flyweight champion when he defeated Deiveson Figueiredo.

Feb. 12 - Yair Rodríguez wins interim featherweight title after Volkanovski tries for another title.

March 4 - UFC 285:

  • Jon Jones wins the undisputed heavyweight title when he finished Ciryl Gane in the first round. Jones is hailed as the GOAT now that he has held both light heavyweight and heavyweight titles.
  • Alexa Grasso becomes the third woman to become the UFC flyweight champion when she defeated longtime champion, Valentina Shevchenko.

April 8 - Israel Adesanya gets his title back and redemption after three losses when he defeated Alex Pereira at UFC 287 for the middleweight title.

June 10 - Amanda Nunes announces her retirement, the women's featherweight and bantamweight titles becomes vacant.

July 8 - UFC 290:

  • Alexander Volkanovski returns to featherweight division and defends his undisputed title against interim champion, Yair Rodríguez.
  • Alexandre Pantoja becomes the new flyweight champion after defeating Brandon Moreno.

July 14 - Jamahal Hill vacated his light heavyweight title due to an achilles tendon rupture.

Aug. 19 - Sean O'Malley became the bantamweight champion when he defeated Aljamain Sterling via a second-round TKO at UFC 292. He is the second DWCS fighter to win an undisputed UFC title.

Sept. 9 - Sean Strickland shocked the world when he became the UFC middleweight champion after a five-round domination of the former champion, Adesanya.

Nov. 11 - UFC 295

  • Alex Pereira became a UFC double champion when he defeated Jiri Procházka via TKO in the second round. With the win, he earned the vacant light heavyweight title.
  • Tom Aspinall knocked out Sergei Pavlovich on just a few weeks' notice to become the UFC interim heavyweight champion after Jon Jones was injured and pulled out of the fight.