Machiko Satonaka (里中 満智子, Satonaka Machiko, born 24 January 1948) is a Japanese manga artist. She made her professional debut in 1964 during her second year of high school with the one-shot Pia no Shōzō ("Portrait of Pia"). She has since created nearly 500 manga in a variety of genres. Two of her most notable works are Ashita Kagayaku ("Tomorrow Will Shine"), which won the 1974 Kodansha Publishing Culture Award, and Karyūdo no Seiza ("Constellation of the Hunter"), which won the 1982 Kodansha Manga Award. In addition to creating manga, Satonaka teaches at the Osaka University of Arts as the head of the Character Creative Arts Department and serves on the board of various manga-related organizations in Japan.
