 | Logan Lerman als Charlie |
 | Emma Watson als Sam |
 | Ezra Miller als Patrick |
 | Mae Whitman als Mary Elizabeth |
 | Kate Walsh als Mother |
 | Dylan McDermott als Father |
 | Melanie Lynskey als Aunt Helen |
 | Nina Dobrev als Candace |
 | Johnny Simmons als Brad |
 | Joan Cusack als Dr. Burton |
 | Paul Rudd als Mr. Anderson |
 | Nicholas Braun als Ponytail Derek |
 | Reece Thompson als Craig |
 | Patrick de Ledebur als Senior Bully |
| Brian Balzerini als Linebacker |
| Tom Kruszewski als Nose Tackle |
 | Julia Garner als Susan |
 | Tom Savini als Mr. Callahan |
| Emily Marie Callaway als Mean Freshman Girl |
 | Chelsea Zhang als Shakespeare Girl |
| Jesse Scheirer als Freshman Boy |
| Justine Nicole Schaefer als Twin Girl #1 |
| Julie Marie Schaefer als Twin Girl #2 |
| Leo Miles Farmerie als 7-Year-Old Charlie |
| Isabel Muschweck als 9-Year-Old Candace |
 | Adam Hagenbuch als Bob |
 | Erin Wilhelmi als Alice |
| Jordan Paley als Rocky MC |
 | Zane Holtz als Chris |
| Timothy Breslin als Policeman |
 | Mark McClain Wilson als Emergency Room Policeman |
| Atticus Cain als Emergency Room Doctor |
 | Stacy Chbosky als Young Mom |
| Dihlon McManne als Priest |
| Laurie Klatscher als School Principal |
 | Landon Pigg als Peter |
 | Jennifer Enskat als Sam's Mom |
 | William L. Thomas als Patrick's Dad |
 | Morgan Wolk als Candace's Friend |
 | Joe Fishel als Father of Twin Girls (uncredited) |
| Mary Jo Markey | Editor |
| Stephen Chbosky | Screenplay |
| Stephen Chbosky | Novel |
| Stephen Chbosky | Director |
| John Malkovich | Producer |
| Inbal Weinberg | Production Design |
| Andrew Dunn | Director of Photography |
| James Powers | Executive Producer |
| Michael Brook | Original Music Composer |
| Lianne Halfon | Producer |
| Russell Smith | Producer |
| Stephen Chbosky | Executive Producer |
| Diane H. Newman | Script Supervisor |
| Venus Kanani | Casting |
| Mary Vernieu | Casting |
| Patrick Murray | Gaffer |
| Merissa Lombardo | Set Decoration |
| Richard Dawn | Sound Editor |
| David C. Robinson | Costume Designer |
| Adam Avitabile | Visual Effects Supervisor |
| Alexandra Patsavas | Music Supervisor |
| Anthony Cargioli | Boom Operator |
| Chip Signore | First Assistant Director |
| Jeffree Bloomer | Sound Mixer |
| Eric Bergman | Post Production Supervisor |
| James Powers | Unit Production Manager |
| Gregory A. Weimerskirch | Art Direction |
| Evelyne Noraz | Makeup Department Head |
| Keith Seymour | Key Grip |
| Suzy Mazzarese-Allison | Hair Department Head |
| Natalie Angel | Production Coordinator |
| Perry Robertson | Supervising Sound Editor |
| Gregg Barbanell | Foley Artist |
| Blaise Corrigan | Stunt Coordinator |
| John Bramley | Still Photographer |
| Christina Myal | Graphic Designer |
| Chris Gary | Associate Producer |
| Patty Bell | Key Makeup Artist |
| Nancy Keslar | Key Hair Stylist |
| Marshall Garlington | Sound Re-Recording Mixer |
| Gillian Brown | Co-Producer |
| Janice F. Sperling | Production Supervisor |
| Ava Dellaira | Associate Producer |
| Shawn Boyachek | Location Manager |
| Joe Barnett | Sound Re-Recording Mixer |
| Trevor Metz | Sound Editor |
| Bruce Tanis | Sound Editor |
| Noel Vought | Foley Artist |
| Pete Dancy | Property Master |
| Russell Tyrrell | Special Effects Coordinator |
| Scott Sanders | Supervising Sound Editor |
| Susan Ransom-Coyle | Second Assistant Director |
| Amanda Jenkins | Set Costumer |
| Diane Collins | Costume Supervisor |
| Melanie Cargioli | Set Costumer |
| Phillip Hoffman | Visual Effects Producer |
| Eugene Doyle | Set Dresser |
| Thomas F. Kelly | Set Dresser |
| Aaron Streiner | Set Dresser |
| Samantha MacIvor | Stunts |
