Honinbo Shusai (本因坊秀哉 Hon'inbō Shūsai) is the professional name of Tamura Hoju, also known as Tamura Yasuhisa (田村 保寿, 1874 -– 18 January 1940), a Japanese professional Go player.

21st and last hereditary head of the Honinbo school, as well as the 10th Meijin when that title stood for the highest Go authority in Japan, rather than the winner of the current annual title duel. Shusai played a role in founding the Nihon Ki-in and turned the Honinbo title over to the Ki-in, who changed it from a hereditary title to a tournament.