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