Mayu Iwatani (born February 19, 1993) is a Japanese professional wrestler currently signed to the World Wonder Ring Stardom promotion. Since making her debut in January 2011, she became a two-time World of Stardom Champion, two-time Wonder of Stardom Champion, one-time High Speed Champion, one-time Goddess of Stardom Champion, and a four-time Artist of Stardom Champion, while also having won the 2015 and 2016 Cinderella Tournaments. She also made appearances in Ring of Honor (ROH), where she is a former one-time Women of Honor World Champion. She on occasion appears in New Japan Pro Wrestling.