Sakaguchi (坂口) is a Japanese surname. Notable people with the surname include:
Alicja Sakaguchi (born 1954), a Polish linguistAngo Sakaguchi (1906–1955), a Japanese novelist and essayistChikara Sakaguchi (born 1934), a Japanese politicianDaisuke Sakaguchi (born 1973), a Japanese voice actorHironobu Sakaguchi (born 1962), a Japanese game designer, game director and game producerHiroyuki Sakaguchi (born 1965), a Japanese baseball playerKenji Sakaguchi (actor) (born 1975), a Japanese actorKenji Sakaguchi (footballer) (born 1975), a former Japanese football playerKinichiro Sakaguchi ( 1897- 1994), a Japanese agricultural chemist and microbiologistKōichi Sakaguchi, a Japanese voice actorSeiji Sakaguchi (born 1942), a retired Japanese professional wrestlerShūhei Sakaguchi (born 1977), a Japanese voice actorTak Sakaguchi (born 1975), a Japanese actor, director, fight choreographer and stuntmanYoshisada Sakaguchi (born 1939), a Japanese actor and voice actorYukio Sakaguchi (born 1973), a Japanese mixed martial artist and professional wrestlerFictional characters:
Alice Sakaguchi, the main character from Please Save My Earth