Cast & Crew zu Gregs Tagebuch - Ich war's nicht!
| Greg Heffley | Zachary Gordon | |
| Frank Heffley | Steve Zahn | |
| Rowley Jefferson | Robert Capron | |
| Rodrick Heffley | Devon Bostick | |
| Susan Heffley | Rachael Harris | |
| Holly Hills | Peyton List | |
| Fregley | Grayson Russell | |
| Chirag | Karan Brar | |
| Patty Farrell | Laine MacNeil | |
| Manny Heffley | Connor Fielding | |
| Manny Heffley | Owen Fielding | |
| Heather Hills | Melissa Roxburgh | |
| Stan Warren | Phil Hayes | |
| Grandpa Heffley | Terence Kelly | |
| Mrs. Jefferson | Bronwen Smith | |
| Mr. Jefferson | Alf Humphreys | |
| Madison | Elise Gatien | |
| Mr. Draybick | John Shaw | |
| Coach Malone | Andrew McNee | |
| Lenwood Heath | Tom Stevens | |
| Ben Segal | Bryce Hodgson | |
| Chris the Bass Player | Christopher De-Schuster | |
| Taylor Pringle | Dalila Bela | |
| Troop Master Barrett | Frank C. Turner | |
| Mrs. Hills | Emily Holmes | |
| Mr. Hills | Jeff Kinney | |
| Regie |
David Bowers |
|
| Buch |
Jeff Kinney Wallace Wolodarsky |
|
| Drehbuch |
Gabe Sachs |
|
| Kamera |
Anthony B. Richmond |
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| Schnitt |
Troy Takaki |
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| Musik |
Ed Shearmur |
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