Iguchi (written 井口 literally "well mouth") is a Japanese surname. Notable people with the surname include:
Bryan Iguchi, a professional snowboarder Miyuki Iguchi, Japanese athlete Motonari Iguchi (井口 基成), pianist , Japanese film director, screenwriter and editor Naruhito Iguchi (井口 成人), actor and voice actor Noboru Iguchi (井口 昇), film director and actor Tadahito Iguchi (井口 資仁), professional baseball player Toshihide Iguchi (井口 俊英), government bond trader Toshio Iguchi, engineer Yuka Iguchi (井口 裕香), voice actress
See also 5561 Iguchi, a main-belt asteroid