Hattori Inshuku (服部 因淑, 1761-1842, 7 dan. Hattori Intetsu 服部因徹 in his youth) was the founder of the Hattori school which was a satellite to the four official Go houses. He made major contributions as a player and an author. He also played an important role in managing the affairs of the Inoue house in the early 19th century following the sudden death of the ninth Inseki, Shunsaku.
He played in various castle games, starting in 1819 at the age of 59.
His other name of Hattori Intetsu is not to be confused with Inoue Gen'an Inseki, who also had the same alternate name.