The Conversion 2026 was a professional wrestling event promoted by World Wonder Ring Stardom, held on June 20, 2026 at Yoyogi National Stadium No.2 Gymnasium in Tokyo, Japan. In the main event, Sayaka Kurara defended the World of Stardom Championship against Suzu Suzuki, who won a #1 contendership match at the company's previous arena show, Queens Dynasty. Other marquee matches include Wonder of Stardom Champion Hanan defending the white belt against her wing☆gori tag team partner Saya Iida, and the first IWGP Women's Championship match after Bushiroad announced the transfer of New Japan Pro-Wrestling (NJPW) to TV Asahi and CyberAgent, fought between champion Syuri and notable freelancer Rina Yamashita.