Takao Koyama (Japanese: 小山 高生, Hepburn: Koyama Takao; born April 21, 1948, in Akishima, Tokyo) is a Japanese screenwriter and novelist focusing on anime productions. His name was written as 小山 高男 until 1987.
Source: “Takao Koyama”, English Wikipedia (CC BY-SA 4.0), excerpt