Yokohama Dream Cinderella 2021 in Summer was a professional wrestling event promoted by World Wonder Ring Stardom, held July 4, 2021 at the Yokohama Budokan in Yokohama, Kanagawa, Japan. In the main event, Utami Hayashishita defended the World of Stardom Championship against Oedo Tai's fearsome leader, Natsuko Tora.