Kyūsaku Yumeno (4 January 1889 - 11 March 1936) is a pen name of Japanese writer Sugiyama Taido, first son of the Kyushu ultranationalist Sugiyama Shigemaru (1864 - 1935). Although the relationship between father and son was difficult - the father being overbearing, often absent, and opposed to his son's interest in literature, - Kyusaku adopted his father's socially conservative and politically ultranationalist views, a factor that sets him apart from many modernist writers, who had left-wing sympathies or maintained political neutrality. At the same time his interests in detective fiction, abnormal psychology, and experimentation with narrative structure place him squarely in the modernist camp.

His most significant work is the highly surreal novel Dogura Magura (ドグラマグラ) (1925), which was adapted into a film.