Longest combined title reigns: since 2001
Most days as undisputed UFC champion, all reigns added together.
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.
102 fighters.
| # | Fighter | Days |
|---|---|---|
| 101 | Dave Menne | 105 days |
| 102 | Natalia Silva | 7 days |