 | Eddie Redmayne als Tom Hayden |
 | Sacha Baron Cohen als Abbie Hoffman |
 | Joseph Gordon-Levitt als Richard Schultz |
 | Michael Keaton als Ramsey Clark |
 | Frank Langella als Judge Julius Hoffman |
 | John Carroll Lynch als David Dellinger |
 | Mark Rylance als William Kunstler |
 | Alex Sharp als Rennie Davis |
 | Yahya Abdul-Mateen II als Bobby Seale |
 | Jeremy Strong als Jerry Rubin |
 | Noah Robbins als Lee Weiner |
 | Danny Flaherty als John Froines |
 | Ben Shenkman als Leonard Weinglass |
 | Kelvin Harrison Jr. als Fred Hampton |
 | Caitlin FitzGerald als Agent Daphne O'Connor |
 | Alice Kremelberg als Bernadine |
 | J.C. MacKenzie als Thomas Foran |
 | John Doman als John Mitchell |
 | Wayne Duvall als Detective Deluca |
 | Damian Young als Howard Ackerman |
 | C.J. Wilson als Sergeant Scott Scibelli |
 | Brady Jenness als David Dellinger's Son |
 | Meghan Rafferty als Mrs. Dellinger |
 | Juliette Angelo als Juror 6 |
 | Brendan Burke als Bailiff |
 | Tah von Allmen als Mrs. Winter |
 | Alan Metoskie als Allen Ginsberg |
| John Gawlik als Policeman That Arrests Jerry |
 | Kevin O'Donnell als Bar Patron 1 |
 | Gavin Haag als Bar Patron 2 |
 | Tiffany Denise Hobbs als Sondra |
 | Steve Routman als David Stahl |
| Madison Nichols als Demonstrator |
 | John F. Carpenter als Detective Bell |
 | Larry Mitchell als Detective Frapoly |
| Mike Geraghty als Detective Sam McGiven |
 | Mike Brunlieb als Eddie |
| James Pravasilis als Egg Throwing Crowd Member |
| Vic Kuligoski als Frat Boy 1 |
 | Brandon Fierro als Frat Boy 2 |
| Calvin Ticknor-Swanson als Frat Boy 3 |
| Gabrielle Perrea als Girl in Beret |
 | Michelle Hurst als Housekeeper Jane |
| Tony Lawry als Man |
 | Kathleen Garrett als Mitchell's Secretary |
| Matt LeFevour als Officer 1 |
| Christian Litke als Officer 2 |
 | Max Adler als Officer Wojohowski |
| Michael Bassett als Officer Quinn |
 | Shawn Parsons als Policeman in Haymarket |
| Julian Hester als Policeman on Bullhorn |
| John Quilty als Reporter Jack |
 | Kate Miller als Reporter Majorie |
 | Edward Fletcher als Reporter Sy |
 | Blair Lewin als Woman in Tavern |
| Jessica Wood als Bartender |
| Steven Komito als Marshal |
| Marco Lama als Someone in the Crowd |
 | Ben Kass als Reporter 7 |
| Gabriel Franken als Reporter 8 |
| Ed Flynn als Reporter 9 |
 | Alex Henderson als Young Man |
 | David Fierro als Bailiff 2 |
| Sam Nelson Harris als Band Lead Singer |
| Marlee Mendelson als Band Member |
| Hana Chew als Band Member |
| Ashley Trumbo als Band Member |
| Allison Trumbo als Band Member |
| Shane Skidmore als Band Member |
| Jeffrey Yonkus als Band Member |
| Maria Jacobson als Band Member |
| Brendan Brown als Band Member |
| Dan MacDonald als Band Member |
| Keeley Morris als Female Protester |
| Thomas John Gallagher als Radio Cop |
 | Michael A. Dean als Carl Oglesby |
| Elizabeth Holder als Juror 11 |
 | Lex Elle als Riot Cop (uncredited) |
| Aaron Sorkin | Director |
| Daniel Pemberton | Original Music Composer |
| Alan Baumgarten | Editor |
| Shane Valentino | Production Design |
| Andrew Baseman | Set Decoration |
| Susan Lyall | Costume Designer |
| Nathan J. Busch II | Hair Department Head |
| Louise McCarthy | Makeup Department Head |
| Brian Luce | Police Consultant |
| Kathryn E. Smith | Costume Supervisor |
| Nick Francone | Supervising Art Director |
| Julia Heymans | Art Direction |
| Ernesto Solo | Art Direction |
| Stephen M. Kelley | Makeup Artist |
| Ray Santoleri | Makeup Artist |
| Shoko Kambara | Assistant Art Director |
| Carla Stile | Set Dresser |
| Michael Babcock | Sound Re-Recording Mixer |
| Dan Kenyon | Sound Designer |
| Julian Slater | Sound Re-Recording Mixer |
| Renée Tondelli | Supervising Sound Editor |
| Glenn Allen | Visual Effects Producer |
| Eran Dinur | Visual Effects Supervisor |
| Richard Friedlander | Visual Effects Producer |
| Jamie Rush | Set Costumer |
| Phedon Papamichael | Director of Photography |
| Herb Stathes | In Memory Of |
| Celeste | Theme Song Performance |
| Aaron Sorkin | Writer |
| Michael Fuchs | "A" Camera Operator |
| Michael Fuchs | Steadicam Operator |
| Craig Pressgrove | First Assistant "A" Camera |
| Marc Loforte | Second Assistant "A" Camera |
| Eve Strickman | Second Assistant "A" Camera |
| Alan Pierce | "B" Camera Operator |
| Ethan Borsuk | First Assistant "B" Camera |
| Brendan K. Russell | Second Assistant "B" Camera |
| Charles Libin | "C" Camera Operator |
| Toshiro Yamaguchi | "C" Camera Operator |
| A. Anthony Cappello | First Assistant "C" Camera |
| Cameron Sizemore | Second Assistant "C" Camera |
| Shane B. Scott | Script Supervisor |
| Jonathan Shoemaker | Unit Production Manager |
| Stuart M. Besser | Unit Production Manager |
| Joseph P. Reidy | First Assistant Director |
| Rachel Jaros | Second Assistant Director |
| Max Adler | Co-Executive Producer |
| Cary Anderson | Co-Executive Producer |
| Sacha Baron Cohen | Associate Producer |
| Gail Benefiel | Co-Executive Producer |
| Jonathan Benefiel | Co-Executive Producer |
| Stuart M. Besser | Producer |
| Marc Butan | Executive Producer |
| Dru Davis | Executive Producer |
| Misook Doolittle | Executive Producer |
| Maurice Fadida | Executive Producer |
| Stephanie Garvin | Co-Executive Producer |
| Mickey Gooch Jr. | Executive Producer |
| J. Todd Harris | Co-Executive Producer |
| Matt Jackson | Producer |
| Anthony Katagas | Executive Producer |
| Nancy Kirhoffer | Post Production Producer |
| Monica Levinson | Executive Producer |
| Lauren Lohman | Executive Producer |
| Laurie MacDonald | Executive Producer |
| Kristie Macosko Krieger | Executive Producer |
| Steve Matzkin | Executive Producer |
| Jan McAdoo | Executive Producer |
| Evan Metropoulos | Executive Producer |
| Charles Miller | Co-Producer |
| Walter F. Parkes | Executive Producer |
| Buddy Patrick | Executive Producer |
| Marc Platt | Producer |
| Shivani Rawat | Executive Producer |
| Joseph P. Reidy | Co-Producer |
| Kristina Rivera | Co-Executive Producer |
| Andrew C. Robinson | Executive Producer |
| James Rodenhouse | Executive Producer |
| Cody Saintgnue | Executive Producer |
| Emily Hunter Salveson | Co-Executive Producer |
| Sarah Schroeder-Matzkin | Executive Producer |
| Thorsten Schumacher | Executive Producer |
| Nicole Alexandra Shipley | Executive Producer |
| Ryan Donnell Smith | Executive Producer |
| Debra Taweel | Co-Executive Producer |
| Tyler Thompson | Producer |
| Jared Underwood | Executive Producer |
| Nia Vazirani | Executive Producer |
| Slava Vladimirov | Executive Producer |
| Vincent Grashaw | Co-Executive Producer |
| John Cenatiempo | Stunts |
| Chris Cenatiempo | Stunts |
| Andrew Dahreddine | Casting Assistant |
