Tamio Kageyama (景山 民夫, Kageyama Tamio, March 20, 1947 - January 27, 1998) was a Japanese novelist and broadcast writer. Another pen name as a broadcast writer is Tetsutarō Ōoka (大岡 鉄太郎). He won the 99th Naoki Prize in 1988 for his novel Coo: Tooi Umi Kara Kita Coo, later adapted into an animated film. Kageyama also contributed to the films Sakana kara daiokishin!! (1992), Saraba itoshiki hito yo (1987), and