Eddie Redmayne (Tom Hayden), Sacha Baron Cohen (Abbie Hoffman), Joseph Gordon-Levitt (Richard Schultz), Michael Keaton (Ramsey Clark), Frank Langella (Judge Julius Hoffman), John Carroll Lynch (David Dellinger), Mark Rylance (William Kunstler) more..., Alex Sharp (Rennie Davis), Yahya Abdul-Mateen II (Bobby Seale), Jeremy Strong (Jerry Rubin), Noah Robbins (Lee Weiner), Danny Flaherty (John Froines), Ben Shenkman (Leonard Weinglass), Kelvin Harrison Jr. (Fred Hampton), Caitlin FitzGerald (Agent Daphne O'Connor), Alice Kremelberg (Bernadine), J. C. MacKenzie (Thomas Foran), John Doman (John Mitchell), Wayne Duvall (Detective Deluca), Damian Young (Howard Ackerman), C.J. Wilson (Sergeant Scott Scibelli), Brady Jenness (David Dellinger's Son), Meghan Rafferty (Mrs. Dellinger), Juliette Angelo (Juror 6), Brendan Burke (Bailiff), Tah von Allmen (Mrs. Winter), Alan Metoskie (Allen Ginsberg), John Gawlik (Policeman That Arrests Jerry), Kevin O'Donnell (Bar Patron 1), Gavin Haag (Bar Patron 2), Tiffany Denise Hobbs (Sondra), Steve Routman (David Stahl), Madison Nichols (Demonstrator), John F. Carpenter (Detective Bell), Larry Mitchell (Detective Frapoly), Mike Geraghty (Detective Sam McGiven), Mike Brunlieb (Eddie), James Pravasilis (Egg Throwing Crowd Member), Vic Kuligoski (Frat Boy 1), Brandon Fierro (Frat Boy 2) and others.

Alan Baumgarten (Editor), Shane Valentino (Production Design), Susan Lyall (Costume Designer), Daniel Pemberton (Original Music Composer), Andrew Baseman (Set Decoration), Nathan J. Busch II (Hair Department Head), Louise McCarthy (Makeup Department Head) more..., Brian Luce (Police Consultant), Kathryn E. Smith (Costume Supervisor), Phedon Papamichael (Director of Photography), Julian Slater (Sound Re-Recording Mixer), Stephen M. Kelley (Makeup Artist), Glenn Allen (Visual Effects Producer), Richard Friedlander (Visual Effects Producer), Ernesto Solo (Art Direction), Michael Babcock (Sound Re-Recording Mixer), Renée Tondelli (Supervising Sound Editor), Jamie Rush (Set Costumer), Eran Dinur (Visual Effects Supervisor), Julia Heymans (Art Direction), Dan Kenyon (Sound Designer), Ray Santoleri (Makeup Artist), Nick Francone (Supervising Art Director), Shoko Kambara (Assistant Art Director), Carla Stile (Set Dresser), Herb Stathes (In Memory Of), Celeste (Theme Song Performance), Joseph P. Reidy (First Assistant Director), Aaron Sorkin (Writer), Stuart M. Besser (Unit Production Manager), Jonathan Shoemaker (Unit Production Manager), Michael Fuchs (Steadicam Operator), Michael Fuchs ("A" Camera Operator), Shane B. Scott (Script Supervisor), Charles Libin ("C" Camera Operator), Alan Pierce ("B" Camera Operator), A. Anthony Cappello (First Assistant "C" Camera), Ethan Borsuk (First Assistant "B" Camera), Rachel Jaros (Second Assistant Director), Craig Pressgrove (First Assistant "A" Camera) and others.