Ryuto Clan (竜頭組 Ryuuto Gumi?) is a powerful Japanese Mafia group during the events of Majisuka Gakuen 5.
- Kawamori Yoshio - The clan's leader.
- Jinyama Taichi - Acting leader and the would-be successor of the clan.
- Takemoto Akira - The clan's loyal bodyguard.
- Miyazaki and Watanabe - Loyal Clan members, possibly the only known surviving members.
- Lawyer Doi - The clan's personal lawyer.
- Takahashi Minami - Former member, supposedly the successor to the clan before she became a Majisuka Jyogakuen student.