Kyoji Horiguchi (Japanese: 堀口 恭司, Horiguchi Kyōji; born October 12, 1990) is a Japanese mixed martial artist currently competing in the flyweight division of the Ultimate Fighting Championship. He formerly competed in the Flyweight and Bantamweight divisions of Rizin FF, where he was the inaugural Flyweight Champion and the inaugural and two-time Bantamweight Champion. He also competed in the Bantamweight division of Bellator MMA, where he was the Bantamweight World Champion. As of July 25, 2026, he is #8 in the Meta UFC flyweight rankings. A professional since 2010, Horiguchi competed from 2013 to 2016 in his first stint with the Ultimate Fighting Championship where he was a UFC Flyweight Championship challenger. He also competed in Shooto, where he was the Bantamweight Champion. He graduated from Sakushin Gakuin High School in Utsunomiya, Tochigi, Japan.
Source: “Kyoji Horiguchi”, English Wikipedia (CC BY-SA 4.0), excerpt