Hyou Riou may refer to two distinct characters within the Saiunkoku series.
- Hyou Riou, the Elder, known also as "Hyou Riou, Senior," the de jure head of the Hyou Clan
- Hyou Riou, the Younger, known also as "Hyou Riou, Junior," the current Secretary of the Department of the Cave of Immortals and the son of Hyou Riou the Elder