Yogibo presents RIZIN.31
- annos singulos: 2021
- Patriam: Japan
- genus:
- Studio: RIZIN Fighting Federation
- keyword: mixed martial arts (mma), kickboxing, combat sports
- Director: Nobuyuki Sakakibara
- cast: Yutaka Saito, Juntaro Ushiku, Kanna Asakura, Saori Oshima, Tsuyoshi Kamiyama, Lawdlain Saint Ilme
