Usui (surname)

Usui (written: 臼井 or 碓井) is a Japanese surname. Notable people with the surname include:

• Kaoru Usui (born 1916), photographer
• Usui Mikao (1865–1926), religious teacher, founder of Reiki
• Usui Sadamitsu, warrior
• Saryu Usui (born 1985), actress and model
• Yoshimi Usui (1905–1987), author and critic
• Yoshito Usui (1958–2009), manga artist