Jun'ichirō, Junichirō, Junichiro or Junichirou (written: 純一郎 or 潤一郎) is a masculine Japanese given name. Notable people with the name include:
*, Japanese primatologist
*, Japanese medical researcher and psychiatrist
*, Japanese politician and Prime Minister of Japan
*
Junichiro Kono, Japanese-American electrical and computer engineer
*, Japanese writer
*, Japanese politician
{{DEFAULTSORT:Junichiro
Japanese masculine given names
Masculine given names