Yoko Minamino (南野 陽子, Minamino Yōko, nickname Nanno) is a Japanese idol, singer, and actress born on June 23, 1967 in Itami, Hyōgo Prefecture, Japan. She graduated from Horikoshi High School in the Chūō district of Nakano, Tokyo. She is well known for her role as Saki Asamiya in the second season of the live action Sukeban Deka TV series, replacing fellow idol star Yuki Saitō. She is currently employed by the K Dash Group talent agency. She has previously worked for the S1 Company, Southern Field, and Sweet Basil talent agencies.
While attending the private Shoin High School in Kobe, Minamino successfully passed an audition in 1982. During the summer of her second year of high school, she moved to Tokyo where she attended Horikoshi High School along with fellow entertainers Miharu Morina and Minako Honda. Minamino and Honda met when they both took the entrance examination.
Minamino made her debut television role in 1984 in Meimon Shiritsu Jōshi Kōkō. She began working for the talent agency S1 Company at this time. Despite being a mostly unknown face in Japanese entertainment, Minamino was given an unusually large number of photos in a seinen manga magazine.