Ultimate Fighting Championships (UFC) champions are fighters who have won and held UFC Championships in respect to their weight classes and divisions. At the time of the UFC's inception in 1993, MMA was unsanctioned in the US and did not include any weight classes. However, in 1997, UFC finally began introducing weight-specific titles starting with UFC 12.
By the time of UFC 31, the Ultimate Fighting Championship came up with a total number of five active weight divisions in the promotion: Lightweight, Welterweight, Middleweight, Light Heavyweight, and Heavyweight.
In 2010, the UFC would expand their lower weight classes and the first addition came in late 2010 when the UFC merged with their sister organization World Extreme Cagefighting and the Featherweight and Bantamweight Divisions were introduced in the UFC.
In 2012, the dissolution of UFC’s sister promotion Strikeforce allowed the UFC to add female fighters to their roster for the first time in the promotion's history.
There are currently a total of 12 UFC weight classes. 8 divisions for the men and 4 divisions for the women.
| Since | August 17, 2019 |
| Defenses | 0 |
At UFC 198, Stipe Miocic won the UFC Heavyweight Championship in Brazil. However, at UFC 226, Miocic was beaten by Daniel Cormier to win the Heavyweight Title.
The former UFC heavyweight champion, Stipe Miocic defeated the reigning champion, Daniel Cormier, in UFC 241 to reclaim the title.
| Since | 6th October, 2019 |
| Defenses | 0 |
Israel Adesanya was crowned the new UFC middleweight champion after he knocked out Robert Whittaker in the main event of UFC 243 in the Marvel Stadium at Melbourne, Australia.
| Since | 7th April, 2018 |
| Defenses | 2 |
Nurmagomedov defeated interim Lightweight champion Dustin Poirier in the main event of Saturday’s UFC 242. That win once again gave Nurmagomedov the title of undisputed UFC lightweight champion while simultaneously moving his record to a perfect 28-0.
Nurmagomedov’s previous title defense was an October 2018 submission win over Conor McGregor.
| Since | 2nd March, 2019 |
| Defenses | 0 |
At UFC 201, Tyron Woodley defeated Robbie Lawler to win the Welterweight Championship. At UFC 235, Kamaru Usman became the new champion by beating Woodley.
| Since | 14th December, 2019 |
| Defenses | 0 |
At UFC 245, Alexander Volkanovski dethroned Max Holloway and became the first Australian born UFC Featherweight Champion.
| Since | 29th Dec, 2018 |
| Defenses | 2 |
At UFC 128, Jon Jones won the Light Heavyweight Title for the first time in his career. However, after being stripped off the title, Daniel Cormier won the belt by beating Anthony Johnson at UFC 187.
At UFC 232, Jon Jones became a two-time UFC Light Heavyweight Champion, following his return to Octagon.
| Since | 8th June, 2019 |
| Defenses | 0 |
At UFC 238, Henry Cejudo defeated T.J. Dillashaw to win the Bantamweight Championship.
| Since | 4th August, 2018 |
| Defenses | 1 |
Demetrious Johnson defeated Joseph Benavidez in 2012, at UFC 152 in Toronto, Ontario, Canada in the finale of a 4-man tournament for the inaugural UFC Flyweight Title.
Johnson lost the championship to Henry Cejudo at UFC 227, as the latter ended Mighty Mouse's reign of 2,142 days.
| Since | 29th Dec, 2018 |
| Defenses | 0 |
| Since | 9th July, 2016 |
| Defenses | 4 |
After a reign of 1,074 days, Rousey lost the Bantamweight Championship to Holly Holm at UFC 193. Holm would eventually lose the title to Meisha Tate, who was beaten by Amanda Nunes at UFC 200 for the title.
| Since | 8th Dec, 2018 |
| Defenses | 2 |
| Since | 31st August, 2019 |
| Defenses | 0 |
The current Strawweight Champion is Jessica Andrade, who defeated former champion Rose Namajunas at UFC 237.
Below is the list of all current UFC Champions with respect to their weight classes:
| Division | Champion | Date Since |
| Heavyweight | Stipe Miocic | 17-Aug-2019 |
| Light Heavyweight | Jon Jones | 29-Dec-2018 |
| Middleweight | Israel Adesanya | 06-Oct-2019 |
| Welterweight | Kamaru Usman | 2-Mar-2019 |
| Lightweight | Khabib Nurmagomedov | 7-Apr-2018 |
| Featherweight | Max Holloway | 3-Jun-2017 |
| Bantamweight | Henry Cejudo | 8-June-2019 |
| Flyweight | Henry Cejudo | 22-Sep-2012 |
| Women's Featherweight | Amanda Nunes | 29-Dec-2018 |
| Women's Bantamweight | Amanda Nunes | 9-Jul-2016 |
| Women's Flyweight | Valentina Shevchenko | 8-Dec-2018 |
| Women's Strawweight | Zhang Weili | 31-Aug-2019 |
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