Asa Butterfield
Ender Wiggin

Hailee Steinfeld
Petra Arkanian

Harrison Ford
Colonel Hyrum Graff

Viola Davis
Major Gwen Anderson

Ben Kingsley
Mazer Rackham

Abigail Breslin
Valentine Wiggin

Aramis Knight
Bean

Moisés Arias
Bonzo Madrid

Nonso Anozie
Sergeant Dap

Suraj Partha
Alai

Khylin Rhambo
Dink Meeker

Jimmy 'Jax' Pinchak
Peter Wiggin

Conor Carroll
Bernard

Tony Mirrcandani
Admiral Chjamrajnagar

Stevie Ray Dallimore
John Wiggin

Andrea Powell
Theresa Wiggin

Brandon Soo Hoo
Fly Molo

Han Soto
Lieutenant Soto

Kyle Clements
Young Mazer Rackham

Kelvin Harrison, Jr.
Salamander (uncredited)

Caleb J. Thaggard
Stilson

Cameron Gaskins
Slattery

Wendy Miklovic
Female Doctor

Jasmine Kaur
Professor

Edrick Browne
Eros Tech Officer Hendee

Christopher Coakley
Stilson Buddy #1

Chase Walker
Stilson Buddy #2

Gavin Hood
Giant