- Asa Butterfield Ender Wiggin
- Harrison Ford Coronel Hyrum Graff
- Hailee Steinfeld Petra Arkanian
- Viola Davis Comandante Gwen Anderson
- Abigail Breslin Valentine Wiggin
- Ben Kingsley Mazer Rackham
- Moises Arias Bonzo
- Nonso Anozie Sergeant Dap
- Brandon Soo Hoo Fly Molo
- Kelvin Harrison Jr. Salamander