Tsutsui Katsumi

Tsutsui Katsumi (筒井勝美, born 1930) is a professional Go player who is a part of the Nihon Ki-in. Tsutsui reached 4-dan in 1979.

Komatsu Hideko is his pupil.

Tsutsui has the same family name as Kimihiro Tsutsui (筒井 公宏 Tsutsui Kimihiro), a fictional character in Hikaru no Go.