Stardom Cinderella Summer Tour 2021 in Sapporo ~ Day 1

Cinderella Summer Tour 2021 in Sapporo ~ Day 1 was a professional wrestling event promoted by World Wonder Ring Stardom, held on July 21, 2021 at Sapporo ii-one Stadium in Sapporo, Hokkaidō, Japan. In the main event, Tam Nakano defended the Wonder of Stardom Championship against Starlight Kid.