Riichi
# Riichi

Riichi (written: 利一 or 理一) is a masculine Japanese given name. Notable people with the name include:

* Riichi Sekiyama (関山 利一, 1909–1970), Japanese Go player
* Riichi Takeshita (武下 利一, born 1989), Japanese badminton player
* Riichi Ueshiba (植芝 理一, born 1969), Japanese manga artist
* Riichi Yokomitsu (横光 利一, 1898–1947), Japanese writer
