2004 in UFC
The year 2004 was the 12th year in the history of the Ultimate Fighting Championship, a mixed martial arts promotion based in the United States. In 2004 the UFC held 5 events beginning with, UFC 46: Supernatural.
Debut UFC fighters
The following fighters fought their first UFC fight in 2004:- David Terrell
- Georges St-Pierre
- Ivan Menjivar
- Jay Hieron
- Jeff Curran
- Joe Doerksen
- Joe Riggs
- Jonathan Wiezorek
- Justin Eilers
- Lee Murray
- Mike Brown
- Mike Kyle
- Patrick Cote
- Renato Verissimo
- Ronald Jhun
- Travis Lutter
- Trevor Prangley
- Wade Shipp
Events list
| # | Event | Date | Venue | Location | Attendance |
| 055 | Boardwalk Hall | Atlantic City, New Jersey, U.S. | 9000 | ||
| 054 | MGM Grand Garden Arena | Las Vegas, Nevada, U.S. | 12100 | ||
| 053 | Mandalay Bay Events Center | Las Vegas, Nevada, U.S. | 10000 | ||
| 052 | Mandalay Bay Events Center | Las Vegas, Nevada, U.S. | 11437 | ||
| 051 | Mandalay Bay Events Center | Las Vegas, Nevada, U.S. | 10700 |