Longest title reign: since 2010
Longest single reigns as undisputed UFC champion, in days.
Reigns are derived from championship bouts. When a belt was vacated or stripped outside a title fight, the reign is shown ending at the next title fight in that division, so a few run long; a title awarded without a fight (José Aldo's in 2010, for one) starts at the champion's first UFC title fight.
104 reigns.
| # | Fighter | Days | Division | Won | Ended |
|---|---|---|---|---|---|
| =100 | Holly Holm | 112 days | Women's Bantamweight | Nov 14, 2015 | Mar 5, 2016 |
| =100 | Jessica Andrade | 112 days | Women's Strawweight | May 11, 2019 | Aug 31, 2019 |
| 103 | Carla Esparza | 92 days | Women's Strawweight | Dec 12, 2014 | Mar 14, 2015 |
| 104 | Natalia Silva | 7 days | Women's Flyweight | Oct 3, 2026 | Champion |