Bryan Cranston
Dalton Trumbo
Elle Fanning
Nikola Trumbo
Michael Stuhlbarg
Edward G. Robinson
David James Elliott
John Wayne
Alan Tudyk
Ian McLellan Hunter
James DuMont
J. Parnell Thomas
Richard Portnow
Louis B. Mayer
Adewale Akinnuoye-Agbaje
Virgil Brooks
Mattie Liptak
Chris Trumbo (Age 13-17)
Dean O'Gorman
Kirk Douglas
Christian Berkel
Otto Preminger
Toby Nichols
Chris Trumbo (age 6-10) (as Tobias McDowell Nichols)
Dalton Trumbo
Himself (archive footage)
Madison Wolfe
Niki Trumbo (age 8-11)
Johnny Sneed
Robert Stripling
Peter MacKenzie
Robert Kenny
Sean Bridgers
Jeff Krandall
Meghan Wolfe
Mitzi Trumbo (age 6-8)
Becca Nicole Preston
Mitzi Trumbo (age 9-12)
Mark Harelik
Edward 'Ed' Muhl
Jaclyn Bethany
Starlet (uncredited)
Kate Kuen
Ethel (uncredited)
Suzanne LaChasse
Showgirl (uncredited)
Rhonda Laizer
Trumbo Friend (uncredited)
Veronica Parks
Showgirl (uncredited)
Anne Speed
Juror (uncredited)
