Takao Koyama (小山 高生; born April 21, 1948, in Akishima, Tokyo) is a Japanese screenwriter and novelist focusing on anime productions. He wrote the stories of all the Dragon Ball Z movies (including Dragon Ball Z: Plan to Eradicate the Saiyans and Dragon Ball: Yo! Son Goku and His Friends Return!!).
Takao Koyama graduated from Waseda University in 1972 and joined to Tatsunoko Production as a story creator and a screenwriter. He left from Tatsunoko in 1975, but he was related to the Time Bokan series, one of the most successful anime series of Tatsunoko, from Time Bokan in 1975 to the last series, Itadakiman in 1983.
After leaving from Tatsunoko, he wrote a lot of screenplays such as Dr. Slump, Dragon Ball Z, Dragon Quest, Saint Seiya and Sailor Moon of Toei Animation, Yawara! of Kitty Films, and Galaxy Angel of Madhouse.
In parallel with works as screenwriter, he is endeavoring to bring up young talents. In 1986, he found "Anime Scenario House" to train the young anime scenario writers. By 1987, young screenwriters such as Satoru Akahori, Hiroyuki Kawasaki, Katsuyuki Sumisawa, Keiko Nobumoto and Aya Matsui graduated from Koyama's school. The school became Brother Noppo, company to support screenwriters, in 1988.
In 1999, he on the "Special/Lifetime Achievement" Award at the 4th Animation Kobe.