| Person | Type | Job | Role(s) |
|---|---|---|---|
 Brad Simpson | Crew | Production | Producer |
 Brent Thomas | Crew | Art | Production Design |
 David Bowers | Crew | Directing | Director |
Donald Sylvester | Crew | Sound | Supervising Sound Editor |
Donna Bis | Crew | Costume & Make-Up | Key Hair Stylist |
Doug Jackson | Crew | Sound | Sound Effects Editor |
 Doug Chapman | Crew | Crew | Stunt Coordinator |
 Edward Shearmur | Crew | Sound | Original Music Composer |
Ethan Smith | Crew | Production | Co-Producer |
 Gabe Sachs | Crew | Writing | Screenplay |
Jack N. Green | Crew | Camera | Director of Photography |
 Jeff Judah | Crew | Writing | Screenplay |
Lisa Love | Crew | Costume & Make-Up | Key Makeup Artist |
Mark Dornfeld | Crew | Visual Effects | Visual Effects Supervisor |
Shannon Grover | Crew | Art | Art Direction |
Tish Monaghan | Crew | Costume & Make-Up | Costume Design |
 Troy Takaki | Crew | Editing | Editor |
 Nina Jacobson | Crew | Production | Producer |
Paulina Kuszta | Crew | Visual Effects | Visual Effects Producer |
 Jeff Kinney | Crew | Writing | Book, Executive Producer |
 Alec Willows | Cast | Actor | Minister |
 Alf Humphreys | Cast | Actor | Mr. Jefferson |
 Angela Moore | Cast | Actress | Convenience Store Customer #3 |
 Belita Moreno | Cast | Actress | Mrs. Norton |
 Betty Phillips | Cast | Actress | Mrs. Evesham |
 Bryce Hodgson | Cast | Actor | Ben Segal |
 Fran Kranz | Cast | Actor | Bill |
Jake D. Smith | Cast | Actor | Archie Kelly |
 John Shaw | Cast | Actor | Mr. Draybick |
 Mark Brandon | Cast | Actor | Male News Anchor |
 Michelle Harrison | Cast | Actress | Wealthy Woman |
Monica Marko | Cast | Actress | Mrs. Anholtz |
 Rachael Harris | Cast | Actress | Susan Heffley |
 Serge Houde | Cast | Actor | Mr. Salz |
 Sheila Paterson | Cast | Actress | Mrs. Bingham |
 Steve Zahn | Cast | Actor | Frank Heffley |
 Terence Kelly | Cast | Actor | Grandpa Heffley |
Teryl Rothery | Cast | Actress | Mrs. Kohan |
 Andrew McNee | Cast | Actor | Coach Malone |
 Ava Hughes | Cast | Actress | Marley |
 Devon Bostick | Cast | Actor | Rodrick Heffley |
 Graeme Duffy | Cast | Actor | Emcee |
 Grayson Russell | Cast | Actor | Fregley |
 Kevin Kazakoff | Cast | Actor | Wealthy Man |
Tae Helgeth | Cast | Mrs. Tan | |
 Benjamin Hollingsworth | Cast | Actor | Terence - Man in The Foot |
 Elysia Rotaru | Cast | Actress | Ingrid - Girl in The Foot |
 Jakob Davies | Cast | Actor | Scotty Douglas |
 Michael Strusievici | Cast | Actor | Crying Boy |
 Owen Best | Cast | Bryce Anderson | |
 Peyton List | Cast | Actress | Holly Hills |
 Robert Capron | Cast | Actor | Rowley Jefferson |
 Savannah Lathem | Cast | Additional Voice (voice) | |
 Sean Mathieson | Cast | Mean Skater Dude | |
Tom MacNeill | Cast | Actor | Teacher (uncredited) |
 Zachary Gordon | Cast | Actor | Greg Heffley |
 Christopher De-Schuster | Cast | Actor | Chris the Bass Player |
 Connor Fielding | Cast | Actor | Manny Heffley |
 Dalila Bela | Cast | Actress | Taylor Pringle |
 Karan Brar | Cast | Actor | Chirag Gupta |
 Laine MacNeil | Cast | Actress | Patty Farrell |
Nancy Ebert | Cast | Actress | Convenience Store Customer #4 |
 Samantha Page | Cast | Actress | Shelley |
 Spencer Drever | Cast | Actor | Harry Gilbertson |
 Melissa Roxburgh | Cast | Actress | Rachel |
 Manoj Sood | Cast | Actor | Convenience Store Customer #2 |
 Dawn Chubai | Cast | Actress | Female News Anchor |
 Darcy Michael | Cast | Convenience Store Customer #1 | |
Jeff Kinney | Cast | Actor | Mr. Jonathon Hills |
 Owen Fielding | Cast | Actor | Manny Heffley |
Doreen Ramus | Cast | Actress | Mrs. Cabbage |
Brenda Anderson | Cast | Actress | Mrs. Fiorkowski |
Kai Kennedy | Cast | Cowering Kid (uncredited) | |
Conner Ingram | Cast | Actor | Young Rodrick |
 Maple Batalia | Cast | Actress | Melissa |
Kyle Cornell | Cast | Party Goer (uncredited) | |
| Person | Type | Job | Role(s) |
