Who is starring in supergirl 2026?

The 2026 film Supergirl features Milly Alcock in the title role of Kara Zor‑El, the Kryptonian heroine who later becomes Supergirl. Alcock is joined by a diverse supporting cast that includes Matthias Schoenaerts, Eve Ridley, David Krumholtz, Emily Beecham, David Corenswet, and Jason Momoa. The ensemble brings a range of characters to the story, from allies to adversaries, as Kara travels across the galaxy to confront a foe who harmed her pet dog, Krypto. Director Craig Gillespie helms the project, with a script written by Ana Nogueira, and the film is produced by Peter Safran and James Gunn under DC Studios. The movie is positioned as the second entry in the DC Universe (DCU) and follows the character’s introduction in the 2023 film The Flash, where Sasha Calle portrayed a different iteration of Supergirl.