Stardom 5★STAR Grand Prix 2026 in Joetsu

5★STAR Grand Prix 2026 in Joetsu was a professional wrestling event promoted by World Wonder Ring Stardom, held on July 26, 2026 at Dúo CEREZO in Joetsu, Niigata, Japan. It served as the fifth show for the company's annual round-robin singles tournament, and featured only Red Stars block matches.