Dylan O'Brien 
 as Thomas

Kaya Scodelario 
 as Teresa Agnes

Aml Ameen 
 as Alby

Thomas Brodie-Sangster 
 as Newt

Ki Hong Lee 
 as Minho

Will Poulter 
 as Gally

Patricia Clarkson 
 as Ava Paige

Blake Cooper 
 as Chuck

Dexter Darden 
 as Frypan

Jacob Latimore 
 as Jeff

Chris Sheffield 
 as Ben

Joe Adler 
 as Zart

Randall D. Cunningham 
 as Clint

Alexander Flores 
 as Winston

Don McManus 
 as Masked Man

Michael Bow 
 as Glader

Jerry Clark 
 as Glader

Michael Deville 
 as Glader

Dylan Gaspard 
 as Glader

Cory Gooding 
 as Glader

Cazi Greene 
 as Glader

Dustin Guitreau 
 as Glader

Tyler Harrison 
 as Glader

Landon Hazel 
 as Glader

Gary Hood 
 as Glader

Nick Killebrew 
 as Glader

John Langston 
 as Glader

Chad Martinez 
 as Glader

Lester Millet 
 as Glader

Sawyer Pierce 
 as Glader

Weston Rachal 
 as Glader

Bryce Romero 
 as Glader

Johnny Stockwell 
 as Glader

SanChavis Torns 
 as Glader

Lane Westerhaus 
 as Glader

Gentry Williams 
 as Glader

Adriana Acosta 
 as Glader (uncredited)

Duane Cothren 
 as Conference Room Parent (uncredited)

James Dashner 
 as Lab Tech (uncredited)

Mark Gibson 
 as Glader (Alec) (uncredited)

Darryl Harvey 
 as Maze Control Room Supervisor / EMT (uncredited)

Janet L'Aube 
 as Lab Scientist (uncredited)

Travis Michael Myers 
 as Glader (uncredited)

Zach Nichols 
 as Glader (uncredited)

Tommy Sheppard 
 as Conference Room Member (uncredited)

Andrew Varenhorst 
 as Patient Zero (uncredited)

Carol Jean Wells 
 as Herself Lab Student (uncredited)

Jeff Wiesen 
 as Glader (uncredited)

Adrian Acosta 
 as Glader (uncredited)

Jacob Deville 
 as Dan (uncredited)

Sheldon Maurer 
 as Glader (uncredited)

Seth Nichols 
 as Lab tech Student (uncredited)

Seth Nichols 
 as Glader (uncredited)

Gustavo I. Ortiz 
 as Rebel Soldier (uncredited)

McKenna Pippen 
 as Lab Tech Student (uncredited)

Giovanni Silva 
 as Lab Tech #7

Nicolas Stan 
 as Child (uncredited)

Tony Vo 
 as Glader (uncredited)