10th Anniversary Grand Final Osaka Dream Cinderella 2021 ~Osaka Mecha Stardom~ was a professional wrestling event promoted by World Wonder Ring Stardom, held on October 9, 2021 at Osaka-jō Hall in Osaka, Japan. In the main event, Utami Hayashishita defended the World of Stardom Championship against Marvelous' Takumi Iroha, with no time limit imposed following their thrilling draw during the 2021 5★STAR GP.