Jiichirō
# Jiichirō

Jiichirō, Jiichiro, Jiichiroh or Jiichirou (written: 治一郎) is a masculine Japanese given name. Notable people with the name include:

* Jiichiro Date (伊達 治一郎, born 1952), Japanese sport wrestler
* Jiichirō Matsumoto (松本 治一郎, 1887–1966), Japanese politician and businessman
* Jiichirō Yasukōchi (安河内 治一郎, 1883–1968), Japanese photographer
