Mitsuo Yoshida (Japanese: 吉田光雄; hangul: 곽광웅 , hanja: 郭光雄 , Kwak Gwang-ung) (born December 3, 1951), better known by his ring name Riki Choshu (長州力 Chōshū Riki), is a Korean-Japanese professional wrestler who is most known for his longtime work in New Japan Pro Wrestling (NJPW) as a wrestler and a booker.