Masato Yamanouchi (山内 雅人, Yamanouchi Masato; April 3, 1929, in Tokyo – April 7, 2003, in Tokyo) was a Japanese voice actor. Over the course of his 58-year career, he was reportedly in more than 20,000 works and dubbed more than 3,000 films. He voiced Grandpa in Future Boy Conan and Dornkirk in The Vision of Escaflowne, and dubbed films for actors including Tyrone Power and Montgomery Clift.