Yaguchi is a Japanese surname. Notable people with the surname include:Mari Yaguchi, a Japanese pop singer Masaki Yaguchi, guitarist for the Japanese rock band called Mucc Shinobu Yaguchi, a Japanese film director and screenwriter Yoko Yaguchi, a Japanese actress, and the wife of Japanese filmmaker Akira Kurosawa for 39 years Yukihiko Yaguchi, a Japanese car designer Yutaka Yaguchi, a martial artist
