Haraguchi
Haraguchi (written: 原口) is a Japanese surname. Notable people with the surname include:
Akira Haraguchi (原口 證, born 1946), Japanese engineer known for memorizing and reciting Pi digits
Genki Haraguchi (原口 元気, born 1991), Japanese footballer
Kazuhiro Haraguchi (原口 一博, born 1959), Japanese politician
Koichi Haraguchi (原口 幸市, 1940–2009), Japanese diplomat
Kozo Haraguchi (原口 幸三, 1910–2011), Japanese sprinter
See also
17933 Haraguchi, main-belt asteroid