Sadao Sasaoka (笹岡 定雄, Sasaoka Sadao, May 5, 1948 – August 31, 1998), better known by the stage name Shigezō Sasaoka (笹岡 繁蔵, Sasaoka Shigezō), was a Japanese voice actor born in Fukushima Prefecture, Japan. He died in 1998 from Typhoid. After his death, his ongoing roles were replaced with other voice actors.