Grey DeLisle Organ Lady (voice)
Chris Diamantopoulos Frank Heffley (voice)
Erica Cerra Susan Heffley (voice)
Hope Levy Additional Voices (voice)
Jabari Banks Lenwood (voice)
Punam Patel Mrs. Winsky (voice)
Lex Lang Additional Voices (voice)
Jill Basey Mrs. Canfield (voice)
Ashley London Additional Voices (voice)
Hunter Dillon Rodrick Heffley (voice)
Sanjay Rao Mr. Gupta (voice)
Susan Leslie Additional Voices (voice)
Talon Warburton Narrator (voice)
Bashir Salahuddin Mr. Warren (voice)
John Paesano Original Music Composer
Randy Pearlstein Mr. Jefferson (voice)
Aaron D. Harris Greg Heffley (voice)
William Stanford Davis Troopmaster Barrett (voice)
Jeff Kinney Book, Producer, Screenplay
P.L. Brown Priest (voice)
Kyrie McAlpin Additional Voices (voice)
Eddie Martinez Gruff Neighbor (voice)
Matt Danner Additional Voices (voice), Director
Matt Nolan Additional Voices (voice)
Gracen Newton Manny Heffley (voice)
Dashiell McGaha-Schletter Ricky Fisher (voice)
Richard Grieve Executive Producer
Camden Coley Additional Voices (voice)
Anders Garrett Additional Voices (voice)
Johnny Gidcomb Additional Voices (voice)
Tina Chow Executive Producer
Ayush Rajmachikar Additional Voices (voice)
Sawyer Holt Additional Voices (voice)
Aaron Hardy Additional Voices (voice)
Adam Hochstatter Original Music Composer
Sawyer Cole Additional Voices (voice)
Jen Cain Additional Voices (voice)
Arya Dormiani Additional Voices (voice)
Jude Zarzaur Rowley Jefferson (voice)
Kendrick Owen White Additional Voices (voice)
Damon Fung Additional Voices (voice)
Ellis Myers Fregley (voice)
Shiloh Phillips Additional Voices (voice)
Abhiram Gulati Chirag (voice)
Lila Bahng Patty (voice)
Enzo Valdez Mikey (voice)
Luther Vue Oversized 4 Year Old (voice)
Annika Erickson Kindergarten Mom (voice)
Tunde Oyeneyin Fitness Instructor (voice)
Melrose Additional Voices (voice)
Miabella Rose Additional Voices (voice)
Kyrie Neriah Kennedy Weston (voice)
Livingston McConaughey Student (voice)