Agata Morio (あがた森魚) is a Japanese folk rock singer-songwriter and actor. He also directed three films. He was born on 12 September 1948 in Rumoi, Hokkaido.

His 1972 debut single Sekishoku Erejī (literary translated as Red Elegy) sold more than a half million copies and still remains his biggest hit. The title of the song was named after a manga by Seiichi Hayashi.