Harrison Ford
Colonel Hyrum Graff
Ben Kingsley
Mazer Rackham
Gavin Hood
Giant
Abigail Breslin
Valentine Wiggin
Viola Davis
Major Gwen Anderson
Nonso Anozie
Sergeant Dap
Moisés Arias
Bonzo Madrid
Asa Butterfield
Ender Wiggin
Conor Carroll
Bernard
Kyle Clements
Young Mazer Rackham
Andrea Powell
Theresa Wiggin
Edrick Browne
Eros Tech Officer Hendee
Hailee Steinfeld
Petra Arkanian
Stevie Ray Dallimore
John Wiggin
Aramis Knight
Bean
Jimmy 'Jax' Pinchak
Peter Wiggin
Khylin Rhambo
Dink Meeker
Brandon Soo Hoo
Fly Molo
Han Soto
Lieutenant Soto
Tony Mirrcandani
Admiral Chjamrajnagar
Suraj Partha
Alai
Kelvin Harrison Jr.
Salamander (uncredited)
Wendy Miklovic
Female Doctor
Christopher Coakley
Stilson Buddy #1
Caleb J. Thaggard
Stilson
Jasmine Kaur
Professor
Cameron Gaskins
Slattery
Chase Walker
Stilson Buddy #2