Hiraiwa Yumie (平岩 弓枝) is an award-winning Japanese author. She was born of the chief priest of the Yoyogi Hachiman shrine in Tokyo in 1932. She graduated from the Department of Japanese Literature at Japan Women's University. She was then mentored by the author Yukio Togawa and joined the Shinyo-kai, an organization of writers of literature in the memory of the novelist Hasegawa Shin. In 1959 Hiraiwa won the Naoki award for her novel Taganeshi.
Her work covers a plethora of novels including historical detective stories, contemporary, historical, and adolescence novels. She also wrote for plays and TV dramas. in '87 she became a member of the selection committee for the Noaki Award which she is a former winner of.