Mitsuo Yoshida (December 3, 1951), better known by his stage name Riki Chōshū(長州力 Chōshū Riki), is a Korean-Japanese former professional wrestler who is most known for his longtime work in New Japan Pro Wrestling as a wrestler and a booker. He is considered one of the most influential wrestlers in Japan in the 80's and 90's and known as the first wrestler to popularize Sasori-gatame, better known in English as Scorpion Deathlock or Sharpshooter.