Masami Yuki (ゆうきまさみ, Yūki Masami), real name Shūji Satō (佐藤修司 Satō Shūji, born December 19, 1957, in Kutchan, Abuta District, Hokkaidō), is a Japanese manga artist.

Yuki graduated from Kutchan High School. He is a member of the artist group known as Headgear. In 1991, his manga Mobile Police Patlabor received the 36th Shogakukan Manga Award for shōnen.