| Rony Sefo | |
| Other Names: | Slyman |
| Birth Date: | 1972 4, df=yes |
| Birth Place: | Auckland, New Zealand |
| Nationality: | New Zealander |
| Weight: | 108kg (238lb) |
| Style: | MMA, Kickboxing |
| Team: | Ray Sefo Fight Academy |
| Kickbox Win: | 10 |
| Kickbox Kowin: | 4 |
| Kickbox Loss: | 12 |
| Kickbox Koloss: | 2 |
| Mma Subloss: | 1 |
| Mma Decloss: | 1 |
| Relatives: | Ray Sefo, brother |
| Sherdog: | 9392 |
Rony Sefo (born 10 April 1972 in New Zealand) is a former two-time World Champion New Zealand kickboxer and mixed martial artist, who fought on Pride Fighting Championships and K-1. As a kickboxer he holds notable wins against Hiriwa Te Rangi and Ricardo Van Den Bos. He is the younger brother of the Muay Thai World champion Ray Sefo. Sefo is married to Kara, and they have two children.[1] [2] [3]
1996 UTC World Heavyweight Champion
1998 ISKA World Heavyweight Champion
| 10 Wins (4 (T)KO's, 6 Decisions), 12 Losses (2 (T)KO's, 9 Decisions) | |||||||
| Date | Result | Opponent | Event | Method | Round | Time | |
|---|---|---|---|---|---|---|---|
| 5 March 2006 | Loss |  Paul Slowinski | K-1 World Grand Prix 2006, Auckland, New Zealand | Decision 3–0 | 3 | ||
| 10 December 2005 | Win |  Jay Hepi | K-1 Kings of Oceania 2005 Round 3, Auckland, New Zealand | Decision | 3 | ||
| 10 July 2005 | Win |  Ricardo Van Den Bos | K-1 Kings of Oceania 2005 Round 2, Auckland, New Zealand | Decision | 3 | ||
| 10 July 2005 | Loss |  Peter Graham | K-1 Kings of Oceania 2005 Round 1, Auckland, New Zealand | Decision 3–0 | 3 | ||
| 7 August 2004 | Loss |  Jorgen Kruth | K-1 World Grand Prix 2004 in Las Vegas II, United States | Decision 3–0 | 3 | ||
| 12 September 2003 | Loss | Ivica Perkovic | K-1 Final Fight - Croatia vs New Zealand, Split, Croatia | Decision | 5 | ||
| 11 April 2003 | Win | Ivica Perkovic | K-1 Lord of the Rings, Auckland, New Zealand | Decision | 5 | ||
| 8 November 2002 | Loss | Jason Suttie | K-1 New Zealand Grand Prix 2002 Auckland, New Zealand | Decision | 3 | ||
| 8 November 2002 | Win | Terry Tuteru | K-1 New Zealand Grand Prix 2002 Auckland, New Zealand | KO (Punches) | 3 | 1:13 | |
| 13 April 2002 | Loss |  Evgeny Orlov | K-1 Croatia Grand Prix 2002 Zagreb, Croatia | Decision 3–0 | 3 | ||
| 18 February 2002 | Loss | Andrew Peck | K-1 World Grand Prix 2002 Preliminary Melbourne, Australia | Decision 3–0 | 3 | ||
| 21 July 2001 | Loss | Doug Viney | K-1 New Zealand Grand Prix 2001 | Decision (Unanimous) | 3 | 3:00 | |
| 21 July 2001 | Win | Hiriwa Te Rangi | K-1 New Zealand Grand Prix 2001 | Decision 3–0 | 3 | ||
| 21 July 2001 | Win | Gary Hart | K-1 New Zealand Grand Prix 2001 | TKO | 2 | ||
| 24 February 2001 | Loss | Peter Graham | K-1 Oceania Grand Prix 2001, Melbourne, Australia | Decision 3–0 | 3 | ||
| 24 February 2001 | Win | Muhammed Azzoui | K-1 Oceania Grand Prix 2001, Melbourne, Australia | TKO (Referee Stoppage) | 2 | 0:43 | |
| 10 November 2000 | Loss | Andrew Peck | K-1 New Zealand Grand Prix 2000 | KO (Kick) | 1 | 0:54 | |
| 10 November 2000 | Win | Shane Wijohn | K-1 New Zealand Grand Prix 2000 | Decision | 3 | ||
| 10 November 2000 | Win | Josh Khan | K-1 New Zealand Grand Prix 2000 | KO (Punches and Knee) | 2 | ||
| 27 February 2000 | Loss | Mark Hunt | K-1 Oceania Grand Prix 2000, Melbourne, Australia | Decision 3–0 | 3 | ||
| 27 February 2000 | Win | Fadi Haddara | K-1 Oceania Grand Prix 2000, Melbourne, Australia | Decision 3–0 | 3 | ||
| 22 August 1999 | Loss |  Mike Bernardo | K-1 Spirits 1999, Japan | KO (Punch) | 4 |
|-| Loss| align=center| 0–2| Sam Brown| Decision (unanimous)| XMMA 2 - ANZ vs. USA| | align=center| 3| align=center| 5:00| Sydney, Australia| |-| Loss| align=center| 0–1| Kiyoshi Tamura| Submission (armbar)| Pride Shockwave 2003| | align=center| 1| align=center| 2:20| Saitama, Japan|