Honinbo (Holder of the Honinbo Title for the strongest player of the board game of go) Shusai (June 24, 1874 - January 18, 1940) was a go (the board game of go, hereinafter referred to as go) player who lived from the Meiji period through to the Showa period.
本因坊秀哉（ほんいんぼうしゅうさい、1874年6月24日-1940年1月18日）は、明治から昭和にかけての囲碁の棋士(囲碁)。