Rollebesetning

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