Hisako Mizui (born 29 March 1972) is a Japanese badminton player, born in Nara, Nara. She competed in women's singles and women's doubles at the 1992 Summer Olympics, and in women's singles at the 1996 Summer Olympics in Atlanta. She won a silver medal in women's singles at the 1994 Asian Games. She is a sister of badminton player Yasuko Mizui.