Futaro Yamada(山田 風太郎Yamada Fūtarō, January 4, 1922 - July 28, 2001) was the pen name of Seiya Yamada(山田 誠也Yamada Seiya), a Japanese author. He was born in Yabu, Hyogo. In 1947, he wrote a mystery novel Daruma-tōge no Jiken(達磨峠の事件, lit. "The Incident on Dharma Pass") and was awarded a prize by a novel magazine Houseki(宝石). He was discovered by Edogawa Rampo and became a novelist. He wrote many ninja (忍法帖 Ninpōchō series) and mystery stories. Many of his works have been adapted for film, TV, manga, and anime.