| Niederlage | 26-14 (1) | Lyoto Machida  | KO (Front Kick) |  | UFC 224 | May 12, 2018 | 2 | 1:00 | Rio de Janeiro, Brazil |
| Sieg | 26-13 (1) | Nate Marquardt  | Decision (Unanimous) |  | UFC 212: Aldo vs Holloway | Jun 03, 2017 | 3 | 5:00 | Rio de Janeiro, Brazil |
| NC | 25-13 (1) | Kelvin Gastelum | TKO (punches) |  | UFC Fight Night 106: Belfort vs Gastelum | Mar 11, 2017 | 1 | 3:52 | Fortaleza, Ceara, Brazil |
| Niederlage | 25-13 | Gegard Mousasi  | TKO (punches) |  | UFC 204: Bisping vs Henderson 2 | Oct 08, 2016 | 2 | 2:43 | Manchester, England, United Kingdom  |
| Niederlage | 25-12 | Ronaldo Souza | TKO (punches) |  | UFC 198: Werdum vs Miocic | May 14, 2016 | 1 | 4:38 | Curitiba, Paraná, Brazil |
| Sieg | 25-11 | Dan Henderson | KO (head kick and punches) |  | UFC Fight Night: Belfort vs Henderson 3 | Nov 07, 2015 | 1 | 2:07 | Sao Paulo, Brazil |
| Niederlage | 24-11 | Chris Weidman | TKO (punches) |  | UFC 187: Cormier vs Johnson | May 23, 2015 | 1 | 2:53 | Las Vegas, United States |
| Sieg | 24-10 | Dan Henderson | KO (head kick) |  | UFC Fight Night 32 - Belfort vs Henderson | Nov 09, 2013 | 1 | 1:17 | Goiânia, Brazil |
| Sieg | 23-10 | Luke Rockhold | KO (spinning heel kick) |  | UFC on FX: Belfort vs Rockhold | May 18, 2013 | 1 | 2:32 | Jaraguá do Sul, Brazil |
| Sieg | 22-10 | Michael Bisping  | TKO (head kick & punches) |  | UFC: Belfort vs Bisping | Jan 19, 2013 | 2 | 1:27 | São Paulo, Brazil |
| Niederlage | 21-10 | Jon Jones | Submission (keylock) |  | UFC 152: Jones vs Belfort | Sep 22, 2012 | 4 | 0:54 | Toronto, Ontario, Canada |
| Sieg | 21-9 | Anthony Johnson | Submission |  | UFC 142 | Jan 14, 2012 | 1 | 4:49 | Rio de Janeiro, Brazil |
| Sieg | 20-9 | Yoshihiro Akiyama  | KO (punches) |  | UFC 133 | Aug 06, 2011 | 1 | 1:52 | Philadelphia, United States |
| Niederlage | 19-9 | Anderson Silva | KO (front kick and punches) |  | UFC 126 | Feb 05, 2011 | 1 | 3:25 | Las Vegas, United States |
| Sieg | 19-8 | Rich Franklin | KO (punches) |  | UFC 103 | Sep 19, 2009 | 1 | 3:02 | Dallas, Texas, United States |
| Sieg | 18-8 | Matt Lindland | KO (punches) |  | Affliction: Day of Reckoning | Jan 24, 2009 | 1 | 0:37 | Anaheim, United States |
| Sieg | 17-8 | Terry Martin | KO (punches) |  | Affliction: Banned | Jul 19, 2008 | 2 | 3:12 | Anaheim, United States |
| Sieg | 16-8 | James Zikic | Decision (unanimous) | | Cage Rage 23 | Sep 22, 2007 | 3 | 5:00 | London, England |
| Sieg | 15-8 | Ivan Serati | TKO (punches) | | Cage Rage 21 | Apr 21, 2007 | 1 | 3:47 | London, England |
| Niederlage | 14-8 | Dan Henderson | Decision (unanimous) | | Pride 32 | Oct 21, 2006 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 14-7 | Kazuo Takahashi | KO (punch) | | Pride Critical Countdown Absolute | Jul 01, 2006 | 1 | 0:36 | Saitama, Saitama, Japan |
| Niederlage | 13-7 | Alistair Overeem | Decision (unanimous) | | Strikeforce: Revenge | Jun 09, 2006 | 3 | 5:00 | San Jose, United States |
| Sieg | 13-6 | Antony Rea  | KO (punches) | | Cage Rage 14 | Dec 03, 2005 | 2 | 1:14 | London, England |
| Niederlage | 12-6 | Alistair Overeem | Submission (guillotine choke) | | Pride Total Elimination 2005 | Apr 23, 2005 | 1 | 9:36 | Osaka, Osaka, Japan |
| Niederlage | 12-5 | Tito Ortiz | Decision (split) | | UFC 51 | Feb 05, 2005 | 3 | 5:00 | Las Vegas, United States |
| Niederlage | 12-4 | Randy Couture | TKO (doctor stoppage) |  | UFC 49 | Aug 21, 2004 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 12-3 | Randy Couture | TKO (cut) |  | UFC 46 | Jan 31, 2004 | 1 | 0:49 | Las Vegas, United States |
| Sieg | 11-3 | Marvin Eastman | TKO (knees and punches) | | UFC 43 | Jun 06, 2003 | 1 | 1:07 | Las Vegas, United States |
| Niederlage | 10-3 | Chuck Liddell | Decision (unanimous) | | UFC 37.5 | Jun 22, 2002 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 10-2 | Heath Herring | Decision (unanimous) | | Pride 14 | May 27, 2001 | 3 | 5:00 | Yokohama, Kanagawa, Japan |
| Sieg | 9-2 | Bobby Southworth | Submission (rear naked choke) | | Pride 13 | Mar 25, 2001 | 1 | 4:09 | Saitama, Saitama, Japan |
| Sieg | 8-2 | Daijiro Matsui | Decision (unanimous) | | Pride 10 | Aug 27, 2000 | 2 | 10:00 | Saitama, Saitama, Japan |
| Sieg | 7-2 | Gilbert Yvel | Decision (unanimous) | | Pride 9 | Jun 04, 2000 | 2 | 10:00 | Nagoya, Aichi, Japan |
| Niederlage | 6-2 | Kazushi Sakuraba | Decision (unanimous) | | Pride 5 | Apr 29, 1999 | 2 | 10:00 | Nagoya, Aichi, Japan |
| Sieg | 6-1 | Wanderlei Silva | TKO (punches) | | UFC Brazil | Oct 16, 1998 | 1 | 0:44 | São Paulo, Brazil |
| Sieg | 5-1 | Joe Charles | Submission (armbar) | | UFC Japan | Dec 21, 1997 | 1 | 4:03 | Yokohama, Kanagawa, Japan |
| Niederlage | 4-1 | Randy Couture | TKO (punches) | | UFC 15 | Oct 17, 1997 | 1 | 8:16 | Bay St. Louis, United States |
| Sieg | 4-0 | David Abbott | TKO (punches) | | UFC 13 | May 30, 1997 | 1 | 0:52 | Augusta, Georgia, United States |
| Sieg | 3-0 | Scott Ferrozzo | TKO (punches) | | UFC 12 | Feb 07, 1997 | 1 | 0:43 | Dothan, United States |
| Sieg | 2-0 | Tra Telligman | TKO (cut) | | UFC 12 | Feb 07, 1997 | 1 | 1:17 | Dothan, United States |
| Sieg | 1-0 | Jon Hess | KO (punches) | | SuperBrawl 2 | Oct 11, 1996 | 1 | 0:12 | Honolulu, Hawaii, United States |
