Mark Watney
Melissa Lewis
Annie Montrose
Teddy Sanders
Rick Martinez
Mitch Henderson
Beth Johanssen
Chris Beck
Alex Vogel
Vincent Kapoor
Bruce Ng
Mindy Park
Rich Purnell
Tim Grimes
Zhu Tao
Guo Ming
Mike Watkins
Brendan Hatch
Jack
U.S. President
Chinese Flight Director
Wen Jiang
Timer Controller
Satcon
Launcher Interface
Launch Control (as Szonja Oroszlan)
Capcom (as Greg De Cuir Jr.)
Guidance
Telemetry
Comms
NASA Break Room Worker
Vincent's Secretary
CNN Reporter
Reporter 1 (as Nikolett Barabás)
Reporter 2
Reporter 3 (as Lili Bordan)
Robert Lewis
Vogel's Wife (as Nora Hörich)
Marissa Martinez
Chinese Translator
Ming's Secretary
JPL Store Man
JPL White Room Worker (as Nicholas Wittman)
JPL White Room Worker
JPL Pathfinder Team
JPL Pathfinder Team (credit only)
Mark Watney's Mother (uncredited)
Police Woman (uncredited)
Receptionist (uncredited)
NASA Staff Member (uncredited)
Pathfinder Developer (uncredited)
JPL Worker (uncredited)
NASA Staff (uncredited)
Cadet (uncredited)
Male Press (uncredited)
NASA Psychologist (uncredited)
Photographer (uncredited)
Arthur 'Fonzie' Fonzarelli (archive footage) (uncredited)