Ichirō Fujiyama, born Takeo Masunaga, was a Japanese singer and composer, known for his contribution to Japanese popular music called ryūkōka by his Western classical music skills. He was born in Chūō, Tokyo, and graduated from the Tokyo Music School. Although he was regarded as a tenor singer in Japanese popular music, he was originally a classical baritone singer. He also acted in various films, and was a close friend of Minoru Matsuya. His workroom has been reproduced inside the "NHK museum of broadcasting" as an exhibit.