Teiken Boxing Gym (帝拳ボクシングジム) is a Japanese traditional boxing club based in the Kagurazaka neighborhood of Shinjuku, Tokyo, Japan. Dating back to 1926, Teiken Boxing Gym manages professional boxers as a member of the East Japan Boxing Association , a subsidiary body of Japan Pro Boxing Association . Its president is the International Boxing Hall of Famer Akihiko Honda , its representative is Tsuyoshi Hamada , and the long-time female manager is Haru Nagano . In order to distinguish from three related clubs i.e. Osaka Teiken Boxing Gym, Fukuoka Teiken Boxing Gym, and Hachinohe Teiken Boxing Gym, it is often referred to as "Teiken (Boxing) Gym in Tokyo" or "Tokyo's Teiken (Boxing) Gym".

Shinsuke Yamanaka is a Japanese former professional boxer who competed from 2006 to 2018. He held the WBC bantamweight title from 2011 to 2017, a reign where he made twelve successful defences and a reign which is the fourth longest in boxing's bantamweight division. He also held The Ring bantamweight title twice between 2016 and 2018.