Last name Ishiguchi (Ishiguchi 
) , globally, is a common family name. The cognomen Ishiguchi is habitual in Japan, where it is quite a common surname, Australia, where it is a rare surname, and China, where it is an extremely rare surname.
Ko, Yukio, Masaki, Makoto, Sakura, Shingo, Shigeo, Koichi, Jarrad, Toshio, Trevor, Edmond, Yoshio, Yutaka, Masaaki, Satoshi, Shoichi, Chikara, Clinton, Kazuhiko, Kenichi, Patrick, Yasuo, Isamu, Fumio, Hisao, To, Ken, Ryo, Koji, Deon, Ippu, Yuji, Masao, Sadao, Shuji, Delaney, Shuzo, Shozo, Seiji, Katie, Kayla, Kazuo, Kyoko, Takeo, Teruo, Naoya, Hideo, Shoji, and Jessica