Shin'ichirō Ikebe (Japanese: 池辺 晋一郎 Ikebe Shin'ichirō; born September 15, 1943, in Mito, Ibaraki) is a Japanese composer of contemporary classical music.

He has written the scores for many films by Akira Kurosawa and other Japanese film directors, including Kagemusha (1980), MacArthur's Children (1984), Kurosawa's Dreams (1990), Rhapsody in August (1991), Madadayo (1993), and Warm Water Under a Red Bridge (2001).

He studied composition with Tomojirō Ikenouchi, Akio Yashiro, and Akira Miyoshi at the Tokyo National University of Fine Arts and Music, obtaining a master's degree in 1971. He serves as a professor at the Tokyo College of Music. He had several awards up to 2004, such as Excellence at the Salzburg TV Opera, The Italian Broadcasting Corporation, that is, RAI, The International Emmy Award, the Otaka Award, the Broadcasting Culture Award, the Yoshio Sagawa incentive Award, the Medal with Purple Ribbon.