 | Hannah Murray als Leslie Van Houten |
 | Sosie Bacon als Patricia Krenwinkel |
 | Marianne Rendón als Susan Atkins |
 | Merritt Wever als Karlene Faith |
 | Matt Smith als Charles Manson |
 | Suki Waterhouse als Mary Brunner |
 | Chace Crawford als Tex Watson |
 | Annabeth Gish als Virginia Carlson |
 | Kayli Carter als Lynette 'Squeaky' Fromme |
 | Cameron Gellman als Bobby Beausoleil |
 | Matt Riedy als Police Chief Davis |
 | Grace Van Dien als Sharon Tate |
 | Lindsay Farris als Jay Sebring |
 | Julia Schlaepfer als Sandra Good |
 | James Trevena als Dennis Wilson |
 | Bridger Zadina als Paul Watkins |
 | India Ennenga als Linda Kasabian |
 | Dan Olivo als Leno LaBianca |
 | Jackie Joyner als Rosemary LaBianca |
| Morgan Melton als Ruth Ann Moorehouse |
 | Bryan Adrian als Terry Melcher |
 | Dayle McLeod als Catherine 'Gypsy' Share |
 | Jeremy Lawson als Danny DeCarlo |
| Trevor Brunsink als Donald 'Shorty' Shea |
 | Dillon Lane als Gregg Jakobson |
 | Aria Taylor als Dianne Lake |
 | John Frank Rosenblum als Officer Cole |
 | Danya LaBelle als Barbara |
 | Sol Rodríguez als Gloria |
 | Kimmy Shields als Vicki |
 | Aaron Leddick als Documentarian / Announcer |
 | Blaine Gray als Golden Globes Guest |
 | Kim Yarbrough als Tina |
 | Tracy Perez als Carla |
 | Anthony Traina als Phil |
 | Darien Sills-Evans als Bill Morris |
 | Christopher Gerse als Pete |
 | Tony Armatrading als Guard Carl |
 | Nathan Sutton als Steve Somewhere |
| Kimberly Gikas als Kay |
| Adria Baratta als Officer Hamilton |
| Marlon Braccia als Mrs. Van Houten |
| Mary Harron | Director |
| Karlene Faith | Book |
| Guinevere Turner | Screenplay |
| Ed Sanders | Book |
| Crille Forsberg | Director of Photography |
| Andrew Hafitz | Editor |
| Cindi Rice | Producer |
| John Frank Rosenblum | Producer |
| Keegan DeWitt | Original Music Composer |
| Dins W. W. Danielsen | Production Design |
| Dana Guerin | Executive Producer |
| David Hillary | Executive Producer |
| Paul Schnee | Casting |
| Elizabeth Warn | Costume Design |
| Jeremy M. Rosen | Producer |
| Michael Guerin | Executive Producer |
| Ed Sanders | Executive Producer |
| Kerry Barden | Casting |
| Todd Hilyard | First Assistant Director |
| Patricia Klawonn | Art Direction |
| Ed French | Special Effects Makeup Artist |
| Kazuyuki Okada | Key Makeup Artist |
| Robert Gould | Set Decoration |
| Dnelle Almanza | Hairstylist |
| Sabrina Cruz Castro | Makeup Artist |
| Alex Dinardo | Special Effects Makeup Artist |
| Hayley Farrington | Hair Department Head |
| Lane Friedman | Key Hair Stylist |
| Miho Suzuki | Makeup Department Head |
| Adria Baratta | Post Production Supervisor |
| Aaron Collins | Production Supervisor |
| Ann Gray | Post Production Supervisor |
| David Hillary | Unit Production Manager |
| Lisa Chu | Second Second Assistant Director |
| Paul Lindsay | Second Assistant Director |
| Tamara Wofford | Second Second Assistant Director |
| Treven Bedwell | Property Master |
| Robert Muller | Leadman |
| Andrew O. Page | Assistant Property Master |
| Phillip Bladh | Sound Mixer |
| John Bowen | ADR Supervisor |
| Gavin Hecker | Foley Editor |
| Matthew Kay | Foley Mixer |
| Glenfield Payne | Supervising Sound Editor |
| Jay Peck | Foley Artist |
| Daniel Timmons | Sound Effects Editor |
| Tony Volante | Sound Re-Recording Mixer |
| Brandon Walz | Boom Operator |
| Jeffrey G. Barnett | Stunt Coordinator |
| Reid Harper | Stunts |
| Riley Harper | Stunts |
| Dalton Rondell | Stunts |
| Michaela Angelique | Second Assistant Camera |
| Iah Bearden-Vrai | Electrician |
| Stefano Ben | Steadicam Operator |
| Jihan Casquejo | Lighting Technician |
| Andy Chen | First Assistant Camera |
| Nolwen Cifuentes | Still Photographer |
| Mitch Cleaver | Epk Camera Operator |
| Collin Davis | Camera Operator |
| Colleen Haley | Second Assistant Camera |
| Julien Janigo | Key Grip |
| Nghia Khuu | Gaffer |
| Skott Khuu | Best Boy Electric |
| Kristina Lechuga | Second Assistant Camera |
| Louis Massouras | Second Assistant Camera |
| Mike Prim | Best Boy Grip |
| Leoncio Provoste | First Assistant "A" Camera |
| Juan Smith-Valle | Lighting Technician |
| Tim Unger | Second Assistant Camera |
| Milton Herdoiza | Extras Casting |
| Joey Montenarello | Casting Associate |
| Jeff Olan | Extras Casting |
| Roya Semnanian | Casting Associate |
| Minnie Garcia | Key Costumer |
| Roman Hankewycz | Colorist |
| Taylor Landesman | Assistant Editor |
| Josephine Wheelwright | Assistant Editor |
| Robert Earl Craft | Location Manager |
| Sean Fernald | Music Supervisor |
| Daniel Timmons | Music Editor |
| Colin DeMartini | Production Secretary |
| Angie Kern | Set Medic |
| Dan Kukkonen | Production Accountant |
| Lisa Patton | Set Medic |
| Liv Banks | Production Coordinator |
| Brett Tyne | Dialect Coach |
