Inagaki Kentaro (稲垣兼太郎, Nisshou, 日省 1854-1940) was a 7-dan Japanese go professional. He was a member of the Hoensha, then the Nihon Ki-in. He became a 7 dan in 1929. His pen name is Nisshou (日省).
His teachers were Sato Shuseki and Katsuda Eiho, and his pupils were Ohira Kenji and Watanabe Hideo.