Jewels 18th Ring was a mixed martial arts (MMA) event held by promotion Jewels on March 3, 2012 (2012-03-03) at Shin-Kiba 1st Ring in Koto, Tokyo, Japan.

[1] Miki (WSR Fairtechs) vs. Akiko Someya (BomboFreely) Wano Sato (Shinko Muay Thai Gym) vs. Reina Matsuda (y-park) Satomi Takano (Club Barbarian) vs. Miyuki Irie (Alliance Narita) Miyoko Kusaka (Grabaka Gym) vs. Mina Kurobe (K Taro Dojo) Celine Haga (Team Hellboy Hansen) vs. Ayame Miura (Free) Emi Tomimatsu (Paraestra Matsudo) vs. Yuko Oya (DEEP OFFICIAL GYM IMPACT) Yui Takada (Mine Kokorokai) vs. Satoko Ozawa (Team Dragon) Mizuki Inoue (White Heart Karate Association) vs. Alexandra Chambers (VT-1 Gym) Roxanne Modafferi (Wajutsu Keishukai Hearts) vs. Takayo Hashi (Wajutsu Keishukai Akza) Mika Nagano (Core) vs. Emi Fujino (Wajutsu Keishukai Gods)