Yōko Arai (born December 13, 1986), better known by her ring name Yoko Bito, is a retired Japanese professional wrestler. She is best known for her tenure with World Wonder Ring Stardom, where she became a one-time Wonder of Stardom Champion and two-time Goddesses of Stardom Champion. She also notably won the 5★STAR Grand Prix and Goddesses of Stardom Tag League tournaments in 2016, the only woman to win both in the same year.