Buntarō Futagawa (二川 文太郎, Futagawa Buntarō, 18 June 1899 – 28 March 1966) was a pioneering Japanese film director and writer. So far, only two of his works have been released on DVD: Orochi (Japanese: 雄呂血, The Serpent, 1925) and the short film Backward Flow (Japanese: 逆流, Gyakuryū, 1924). As a writer, he used another name: Otsuma Shinozuka (Japanese: 紫之塚 乙馬).