Naoyuki Kotani (born December 8, 1981) born in Japan is a mixed martial arts fighter. He competes in the Lightweight division. His last fight was a draw at ZST - ZST.15: Fifth Anniversary against Masanori Kanehara on November 23, 2007.
| Career Statistics: | |
| Knockout Wins: 0 (0%) | Knockout Losses: 2 (05%) |
| TKO Wins: 2 (05%) | TKO Losses: 3 (08%) |
| Submission Wins: 19 (49%) | Submission Losses: 1 (03%) |
| Decision Wins: 1 (03%) | Decision Losses: 4 (10%) |
| Draws: 7 | No Contests: 0 |
| Career Fights: | |||||
| Opponent | Method | Event | Date | Rnd | |
| Win | Keigo Hirayama | Submission | Zst: Zst 27 | Feb. 06, 2011 | 1 |
| Win | Eriya Matsuda | Submission | Zst: Zst 25 | Sep. 26, 2010 | 1 |
| Loss | Jorge Masvidal | Split Decision | Astra: Yoshida's Farewell | Apr. 25, 2010 | 3 |
| Draw | Kenichi Ito | Draw | Zst: Zst 23 | Feb. 20, 2010 | 2 |
| Win | Daisuke Nakamura | Submission | Zst: Zst 22 | Nov. 23, 2009 | 1 |
| Win | Yojiro Uchimura | Submission | Zst: Zst 21 | Sep. 21, 2009 | 1 |
| Loss | Kuniyoshi Hironaka | Submission | Zst: Zst 20 | May. 24, 2009 | 2 |
| Win | Katsuhiko Nagata | Submission | Zst 18: Sixth Anniversary | Nov. 23, 2008 | 2 |
| Loss | Koji Oishi | Unanimous Decision | Pancrase: Shining 8 | Oct. 01, 2008 | 3 |
| Draw | Masanori Kanehara | Draw | Zst 15: Fifth Anniversary | Nov. 23, 2007 | 2 |
| Loss | Dennis Siver | Knockout | UFC 75: Champion vs. Champion | Sep. 08, 2007 | 2 |
| Loss | Thiago Tavares | Unanimous Decision | UFC: Fight Night 9 | Apr. 05, 2007 | 3 |
| Win | Masayuki Okude | Submission | Zst: Zst 12 | Feb. 12, 2007 | 1 |
| Draw | Erikas Petraitis | Draw | Zst: Zst 11 | Nov. 23, 2006 | 2 |
| Win | Shinya Sato | Submission | Zst: Grappling Tournament Featherweight 2 | May. 27, 2006 | 1 |
| Draw | Darius Skliaudys | Draw | Zst: Zst 9 | Feb. 18, 2006 | 2 |
| Win | Vito Woods | Submission | XFO: Xtreme Fighting Organization 8 | Dec. 10, 2005 | 1 |
| Loss | Luiz Azeredo | Knockout | PRIDE: Bushido 9 | Sep. 25, 2005 | 1 |
| Draw | Darius Skliaudys | Draw | Zst: Grand Prix 2 Final Round | Jan. 23, 2005 | 3 |
| Loss | Roger Huerta | Technical Knockout | XFO 4: International | Dec. 03, 2004 | 1 |
| Loss | Yves Edwards | Technical Knockout | Euphoria: Road to the Titles | Oct. 15, 2004 | 1 |
| Win | Hideo Tokoro | Submission | Zst: Zst 6 | Sep. 12, 2004 | 1 |
| Win | Remigijus Morkevicius | Submission | Zst: Battle Hazard 1 | Jul. 04, 2004 | 1 |
| Loss | Marcus Aurelio | Technical Knockout | Zst: Zst 5 | May. 05, 2004 | 2 |
| Loss | Rich Clementi | Unanimous Decision | Zst: Grand Prix Final Round | Jan. 11, 2004 | 2 |
| Win | Mindaugas Smirnovas | Submission | Zst: Grand Prix Opening Round | Nov. 23, 2003 | 1 |
| Win | Mindaugas Smirnovas | Technical Submission | Zst: The Battlefield 4 | Sep. 07, 2003 | 1 |
| Draw | Mindaugas Smirnovas | Draw | Rings Lithuania: Bushido Rings 7: Adrenalinas | Apr. 05, 2003 | 3 |
| Win | Antoine Skinner | Submission | Zst: The Battlefield 2 | Mar. 09, 2003 | 1 |
| Win | Mindaugas Laurinaitis | Technical Submission | Zst: The Battlefield 1 | Nov. 23, 2002 | 1 |
| Win | Kenichi Serizawa | Technical Knockout | GCM: Demolition 020908 | Sep. 08, 2002 | 1 |
| Win | Masaya Takita | Submission | GCM: ORG 3rd | Jun. 16, 2002 | 1 |
| Win | Yoshinobu Ota | Technical Submission | Rings: World Title Series Grand Final | Feb. 15, 2002 | 1 |
| Win | Takahito Iida | Submission | Rings: World Title Series 5 | Dec. 21, 2001 | 1 |
| Win | Hideo Tokoro | Decision | Rings: Battle Genesis Vol. 8 | Sep. 21, 2001 | 3 |
| Draw | Jiro Wakabayashi | Draw | Rings: World Title Series 1 | Apr. 20, 2001 | 3 |
| Win | Curtis Brigham | Submission | Rings USA: Battle of Champions | Mar. 17, 2001 | 2 |
| Win | Tashiro Nishiuchi | Submission | Rings: Battle Genesis Vol. 6 | Sep. 05, 2000 | 1 |
| Win | Kiyohito Sugata | Technical Knockout | Rings: Battle Genesis Vol. 6 | Sep. 05, 2000 | 1 |
| Total Fights: 39 | Record: 22 - 10 (7 DRAWS) | |||||
Quarterly Rankings
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