Mitsui (surname)

Mitsui (written: 三井 lit. "three wells") is a Japanese surname. Notable people with the surname include:

• Aika Mitsui, member of the J-pop group Morning Musume
• Hideki Mitsui, Japanese screenwriter
• Kōji Mitsui (三井 弘次, 1910–1979), Japanese actor
• Miyoko Mitsui (三井 美代子, born 1919), Japanese hurdler
• Takaharu Mitsui, Japanese philatelist
• Mitsui Takatoshi, founder of the Mitsui conglomerate
• Wakio Mitsui, Japanese politician
• Yōko Mitsui (1936–2014), Japanese poet
• Yuri Mitsui, Japanese model and actress