The name of Saiin was given to a Priestess who served at the Kamo-jinja Shrine from the Heian to the Kamakura period, or at the residence of the Priestess.
斎院（さいいん）は、平安時代から鎌倉時代にかけて賀茂神社に奉仕した斎王、または斎王の御所。