Dalton Trumbo

Bryan Cranston

Acting

Cleo Trumbo

Diane Lane

Acting

Hedda Hopper

Helen Mirren

Acting

Nikola Trumbo

Elle Fanning

Acting

Arlen Hird

Louis C.K.

Acting

Frank King

John Goodman

Acting

Edward G. Robinson

Michael Stuhlbarg

Acting

John Wayne

David James Elliott

Acting

Buddy Ross

Roger Bart

Acting

Ed Muhl

Mark Harelik

Acting

Sam Wood

John Getz

Acting

Ian McLellan Hunter

Alan Tudyk

Acting

J. Parnell Thomas

James DuMont

Acting

Louis B. Mayer

Richard Portnow

Acting

Virgil Brooks

Adewale Akinnuoye-Agbaje

Acting

Hymie King

Stephen Root

Acting

Chris Trumbo (Age 13-17)

Mattie Liptak

Acting

Kirk Douglas

Dean O'Gorman

Acting

Andrew Hird

Garrett Hines

Acting

Otto Preminger

Christian Berkel

Acting

Roy Brewer

Dan Bakkedahl

Acting

Chris Trumbo (age 6-10) (as Tobias McDowell Nichols)

Toby Nichols

Acting

Himself (archive footage)

Dalton Trumbo

Writing

Party Goer

Laura Flannery

Acting

Niki Trumbo (age 8-11)

Madison Wolfe

Acting

Robert Stripling

Johnny Sneed

Acting

Reporter

Rio Hackford

Acting

Reporter

Dane Rhodes

Acting

Robert Kenny

Peter MacKenzie

Acting

Jury Foreman

John Neisler

Acting

Jeff Krandall

Sean Bridgers

Acting

Mitzi Trumbo (age 6-8)

Meghan Wolfe

Acting

Mitzi Trumbo (age 9-12)

Becca Nicole Preston

Acting

Edward 'Ed' Muhl

Mark Harelik

Acting

Starlet (uncredited)

Jaclyn Bethany

Acting

Ethel (uncredited)

Kate Kuen

Acting

Showgirl (uncredited)

Suzanne LaChasse

Acting

Trumbo Friend (uncredited)

Rhonda Laizer

Acting

Showgirl (uncredited)

Veronica Parks

Acting

Juror (uncredited)

Anne Speed

Acting

Irving Radovich in Roman Holiday (archive footage) (uncredited)

Eddie Albert

Acting

Self (archive footage) (uncredited)

Lauren Bacall

Acting

Self (archive footage) (voice) (uncredited)

Lucille Ball

Acting

Self (archive footage) (uncredited)

James Garner

Acting

Self (archive footage) (uncredited)

Cary Grant

Acting

Crassus (archive footage) (uncredited)

Laurence Olivier

Acting