Jonouchi
Jonouchi is a Japanese surname. It may refer to
People
- Kunio Jōnouchi, a Japanese professional baseball player for the Yomiuri Giants and Chiba Lotte Marines
- Missa Johnouchi, a Japanese composer, pianist, conductor, and singer
- Sanae Jōnouchi, a former member of the Japanese pop music group Onyanko Club
Fictional people
- Ayame Jounouchi of Ouran High School Host Club
- Katsuya Jonouchi of Yu-Gi-Oh!
- Sai Jounouchi of ''Angelic Layer''