 | Nick Robinson als Simon Spier |
 | Jennifer Garner als Emily Spier |
 | Josh Duhamel als Jack Spier |
 | Katherine Langford als Leah Burke |
 | Alexandra Shipp als Abby Suso |
 | Logan Miller als Martin Addison |
 | Keiynan Lonsdale als Abraham 'Bram' Greenfeld |
 | Jorge Lendeborg Jr. als Nick Eisner |
 | Talitha Bateman als Nora Spier |
 | Tony Hale als Mr. Worth |
 | Natasha Rothwell als Ms. Albright |
 | Miles Heizer als Cal Price |
 | Joey Pollari als Lyle |
 | Clark Moore als Ethan |
 | Drew Starkey als Garrett Laughlin |
 | Mackenzie Lintz als Taylor |
 | Cassady McClincy als Jackie |
 | Alex Sgambati als Claire |
 | Jamila Thompson als Additional Posse Girl |
 | Emily Jordan als Creekwood Girl |
 | Patrick Donohue als Math Teacher |
 | Terayle Hill als Spencer |
 | Tyler Chase als Aaron |
 | Haroon Khan als Suraj |
 | Joshua Mikel als Ride Operator |
 | Nicholas Stargel als Fantasy Teen |
 | Nancy De Mayo als Mrs. Eisner |
 | Christian Ojore Mayfield als Mr. Eisner |
 | Chantell D. Christopher als Mrs. Suso |
 | Mandy Fason als Mrs. Burke |
 | Philip Covin als Mr. Burke |
 | Campbell Godfrey als Little Man |
 | Robbie Rogers als The Coach |
 | Christopher L. Plunkett als Dancer |
| Jessi Peralta als Dancer |
 | Carsen Rowe als Dancer |
| Jonathan Fritschi als Dancer |
| Matthew Laraway als Dancer |
 | Dylan Cheek als Dancer |
 | Jaidi Ventura als Dancer |
 | Danni Heverin als Dancer |
| David Copeland Brown Jr. als Tyler (uncredited) |
 | Bryson Pitts als 10-Year-Old Simon Spier (uncredited) |
 | Nye Reynolds als 5-Year-Old Simon Spier (uncredited) |
| Skye Mowbray als 6-Year-Old Nora Spier (uncredited) |
 | Samantha Bulka als Ethan's Posse (uncredited) |
 | Baz Ma als Ethan's Posse (uncredited) |
| Natalia Tureta als Ethan's Posse (uncredited) |
| Briana Estevez als Cheerleader (uncredited) |
| Jönah-Blainé Bowling als Trendy Jock (uncredited) |
 | Sean O'Donnell als High School Student (uncredited) |
| Collin McHugh als High School Student (uncredited) |
| Abigail Houck als High School Student (uncredited) |
| Jodi Houck als Parent (uncredited) |
 | Josh Royston als Parent (uncredited) |
 | Tyson Love als Football Parent (uncredited) |
| Timothy M. Bourne | Executive Producer |
| Marty Bowen | Producer |
| Wyck Godfrey | Producer |
| Isaac Klausner | Producer |
| Pouya Shahbazian | Producer |
| Harry Jierjian | Editor |
| Denise Chamian | Casting |
| Jared Bowen | Makeup Artist |
| Heath M. Howard | Production Supervisor |
| Justin DeMartino | Set Dresser |
| Anna J. DeMildt | Art Department Assistant |
| Jonathan Carbonaro | Digital Intermediate |
| Scott W. Leftridge | Key Grip |
| Brandon Gorrell | Location Scout |
| Mela Rayne | Location Scout |
| Zackary Ballou | Production Intern |
| Steve Cainas | Production Coordinator |
| M. Ross-Michaels | Production Accountant |
| Deborah Simmrin | Unit Publicist |
| Barry Strait | Set Medic |
| J. P. Valenti | Stand In |
| Nathan Wind | Production Office Assistant |
| Isaac Aptaker | Screenplay |
| Elizabeth Berger | Screenplay |
| Greg Berlanti | Director |
| Chris McEwen | Co-Producer |
| Rob Simonsen | Original Music Composer |
| Becky Albertalli | Novel |
| John Guleserian | Director of Photography |
| Gregory Earls | Post-Production Manager |
| Kevin Breen | Additional Second Assistant Director |
| Richard Graves | First Assistant Director |
| Katye Kalivoda | Second Second Assistant Director |
| Meaghan F. McLaughlin | Second Assistant Director |
| Ryan J. Pezdirc | Additional Second Assistant Director |
| Matthew Colvin | Location Assistant |
| Diane Durant | Script Supervisor |
| Ben Rothstein | Still Photographer |
| Nathanael Horton | Visual Effects Coordinator |
| Aaron Osborne | Production Design |
| Erin Cochran | Art Direction |
| Tasha Clarkson | Set Decoration |
| Eric Daman | Costume Design |
| Brynn Berg | Key Hair Stylist |
| Travis Pates | Makeup Department Head |
| Jennifer Santiago | Hair Department Head |
| Leo Satkovich | Key Makeup Artist |
| Kimberly Blaurock | Art Department Coordinator |
| Aimee Athnos | Set Decorating Coordinator |
| Dawud Anyabwile | Storyboard Artist |
| Derrick Chambers | Greensman |
| Britain Illingworth-Cramer | Set Designer |
| Haley Keim | Graphic Designer |
| Katrina Rice | Property Master |
| John Sommerville | Leadman |
| Deb Adair | Sound Re-Recording Mixer |
| Davi Aquino | Foley Artist |
| David Betancourt | ADR Mixer |
| Russell Farmarco | Dialogue Editor |
| Sandra Fox | Foley Artist |
| David Giammarco | Sound Re-Recording Mixer |
| Jack Heeren | Foley Mixer |
| Goro Koyama | Foley Artist |
| David Lucarelli | Foley Artist |
| Mark Paterson | Sound Re-Recording Mixer |
| Charleen Richards-Steeves | ADR Mixer |
| Luke Schwarzweller | Sound Recordist |
| Donald Sylvester | Supervising Sound Editor |
| Craig Weintraub | Assistant Sound Editor |
| Ken Gorrell | Special Effects Coordinator |
| Jason Charles Hill | Stunt Double |
| J. A. Byerly | Rigging Gaffer |
| Nichole Castro | Second Assistant "B" Camera |
| Jeremy Cournyea | Epk Camera Operator |
| Tim Fabrizio | Steadicam Operator |
| Rodrigue Gomes | Second Assistant "A" Camera |
| Jeremy Fenix Johnson | Lighting Technician |
| Abbie Knights | Electrician |
| Wayne Mann | Drone Pilot |
| Louie Northern | Drone Pilot |
| Bill O'Drobinak | Camera Operator |
| James 'Tripp' Pair III | Dolly Grip |
| Melanie A. Ragone | Best Boy Grip |
| Robert Sciretta | Gaffer |
| Tatem Spearman | Electrician |
| Fred Thomas | First Assistant "A" Camera |
| Joel C. Warren | Lighting Technician |
| Ryan Weisen | First Assistant "B" Camera |
| Rose Locke | Extras Casting |
| Anna Bourne | Key Costumer |
| Madeline Gunter | Assistant Costume Designer |
| Stephanie Logan | Costume Coordinator |
| Joulles Wright | Costume Supervisor |
| Madelaine Jereczek | Assistant Editor |
| Kaylee Karlik | First Assistant Editor |
| Gaston Jaren Lopez | First Assistant Editor |
| Tom Reiser | Colorist |
| Leah Harrison | Music Coordinator |
| Season Kent | Music Supervisor |
| Katrina Schiller | Music Editor |
| Catherine Wilson | Music Editor |
| Armen V. Kevorkian | Visual Effects Supervisor |
| Tom Brown | Music Arranger |
| Will Ropp | ADR & Dubbing |
