Wataru Miki (born August 26, 1980) is a Japanese mixed martial artist. He competed in the Featherweight and Lightweight divisions.
Mixed martial arts record
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| Loss
| align=center| 20-14-6
| Shigeki Osawa
| Decision (Unanimous) | Shooto: 1st Round 2015 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 20-13-6 | Takumi Nakayama | Submission (Rear-Naked Choke) | Vale Tudo Japan: VTJ 5th in Osaka | | align=center| 2 | align=center| 2:29 | Osaka, Japan | |- | Loss | align=center| 20-12-6 | Jae Woong Kim | Decision (Unanimous) | Vale Tudo Japan: VTJ 4th | | align=center| 3 | align=center| 5:00 | Ota, Tokyo, Japan | |- | Win | align=center| 20-11-6 | Jung Gyeong Lee | Submission (Rear-Naked Choke) | Shooto: 1st Round 2013 | | align=center| 2 | align=center| 2:57 | Tokyo, Japan | |- | Loss | align=center| 19-11-6 | Yusuke Yachi | Decision (Unanimous) | Shooto: 12th Round | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 19-10-6 | Yoshifumi Nakamura | Decision (Split) | Shooto: 5th Round | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 18-10-6 | Guy Delumeau | Draw (Split) | Shooto: Survivor Tournament Final | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 18-10-5 | Tenkei Oda | Draw (Split) | Shooto: Shooto the Shoot 2011 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 18-10-4 | Ikuo Usuda | Submission (Rear-Naked Choke) | Shooto: Shootor's Legacy 3 | | align=center| 3 | align=center| 2:20 | Tokyo, Japan | |- | Win | align=center| 17-10-4 | Takayoshi Ono | Submission (Inverted Triangle Armbar) | Shooto: Shootor's Legacy 2 | | align=center| 2 | align=center| 4:06 | Tokyo, Japan | |- | Draw | align=center| 16-10-4 | Guy Delumeau | Draw | Shooto: Gig Tokyo 5 | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 16-10-3 | Shintaro Ishiwatari | Decision (Majority) | Shooto: The Way of Shooto 3: Like a Tiger, Like a Dragon | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 16-9-3 | Jin Suk Jung | KO (Knee to the Body) | Shooto: The Way of Shooto 1: Like a Tiger, Like a Dragon | | align=center| 1 | align=center| 3:15 | Tokyo, Japan | |- | Win | align=center| 15-9-3 | Tomonori Taniguchi | Submission (Rear-Naked Choke) | GCM: Cage Force 12 | | align=center| 3 | align=center| 4:36 | Tokyo, Japan | |- | Loss | align=center| 14-9-3 | Hiroshi Nakamura | Decision (Majority) | GCM: Cage Force 10 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 14-8-3 | Masaaki Hasegawa | Submission (Armbar) | GCM: Cage Force 9 | | align=center| 3 | align=center| 1:40 | Tokyo, Japan | |- | Draw | align=center| 13-8-3 | Tomohiko Hori | Draw | GCM: Cage Force 8 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 13-8-2 | Tetsuo Uehata | TKO (Punches) | GCM: Demolition 080721 | | align=center| 1 | align=center| 2:28 | Japan | |- | Loss | align=center| 12-8-2 | Yoshihiro Koyama | Decision (Unanimous) | GCM: Cage Force 6 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 12-7-2 | Kiyonobu Nishikata | Decision (Unanimous) | GCM: Cage Force EX Eastern Bound | | align=center| 2 | align=center| 5:00 | | |- | Loss | align=center| 11-7-2 | Jadamba Narantungalag | Decision (Unanimous) | IMPERIAL: Imperial | | align=center| 2 | align=center| 5:00 | Ulan Bator, Mongolia | |- | Loss | align=center| 11-6-2 | Artur Oumakhanov | Decision (Split) | GCM: Cage Force 3 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 11-5-2 | Yasunori Kanehara | TKO (Doctor Stoppage) | GCM: Cage Force EX Western Bound | | align=center| 2 | align=center| 1:21 | Tottori, Japan | |- | Win | align=center| 10-5-2 | Yoshinori Ikeda | Decision (Unanimous) | GCM: Cage Force 1 | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 9-5-2 | Koji Yoshida | Draw | GCM: D.O.G. 7 | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 9-5-1 | Yasunori Kanehara | Decision (Majority) | GCM: D.O.G.