Most title defences in one reign: before 2000
Most successful title defences in a single reign.
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.
A drawn title fight keeps the belt but is not counted as a defence.
4 reigns.
| # | Fighter | Total | Division | Won | Ended |
|---|---|---|---|---|---|
| =1 | Frank Shamrock | 4 | Light Heavyweight | Dec 21, 1997 | Apr 14, 2000 |
| =1 | Pat Miletich | 4 | Welterweight | Oct 16, 1998 | May 4, 2001 |
| =3 | Maurice Smith | 1 | Heavyweight | Jul 27, 1997 | Dec 21, 1997 |
| =3 | Kevin Randleman | 1 | Heavyweight | Nov 19, 1999 | Nov 17, 2000 |