Kengo Ohkuchi (大口 兼悟 Ōkuchi Kengo) is a Japanese actor. In Kamen Rider Series, he played Kazufumi Mizuno in Kamen Rider 555. He later played Nobunaga in Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core. He announced his retirement from acting in the summer of 2016, stating "I am not famous, not even that good an actor. I've had more sad things than happy things. But because of these sad experiences, I was able to make it till here".