Bryan Cranston character Dalton Trumbo
Diane Lane character Cleo Trumbo
Helen Mirren character Hedda Hopper
Elle Fanning character Nikola Trumbo
Louis C. K. character Arlen Hird
John Goodman character Frank King
Michael Stuhlbarg character Edward G. Robinson
David James Elliott character John Wayne
Roger Bart character Buddy Ross
Mark Harelik character Ed Muhl
John Getz character Sam Wood
Alan Tudyk character Ian McLellan Hunter
James DuMont character J. Parnell Thomas
Richard Portnow character Louis B. Mayer
Adewale Akinnuoye-Agbaje character Virgil Brooks
Stephen Root character Hymie King
Mattie Liptak character Chris Trumbo (Age 13-17)
Dean O'Gorman character Kirk Douglas
Garrett Hines character Andrew Hird
Christian Berkel character Otto Preminger
Dan Bakkedahl character Roy Brewer
Toby Nichols character Chris Trumbo (age 6-10) (as Tobias McDowell Nichols)
Dalton Trumbo character Himself (archive footage)
