 | Jordana Beatty als Judy Moody |
 | Parris Mosteller als James "Stink" Moody |
 | Heather Graham als Aunt Opal |
 | Janet Varney als Jill Moody (Mom) |
 | Preston Bailey als Franklin "Frank" Pearl |
 | Jaleel White als Mr. Todd |
 | Ashley Boettcher als Jessica Finch |
 | Taylar Hender als Amy Namey |
 | Brian Palermo als Zombie |
| Kristoffer Ryan Winters als Josh Moody (Dad) |
 | Garrett Ryan als Rockford "Rocky" Zang |
 | Cameron Boyce als Hunter / Werewolf |
| Jackson Odell als Zeke |
| Jenn Korbee als Newscaster |
 | Jacob Bertrand als Boy |
 | Dean Cameron als Animated Reporter / Town Hall Official |
| Doug MacMillan als Trey-Paul Nevreby |
 | Bobbi Sue Luther als Young Woman |
| Sarah Bibbo als Girl at Circus |
| Ryan Dodson als Movie Theater Employee |
| Sophia Strauss als Student |
 | Hunter King als Priscilla Granger (uncredited) |
| Randy Masters als Uncle Matt (uncredited) |
 | Eric Stoltz als Guy in Zombie Movie |
 | Robert Costanzo als Herb |
 | Richard Riehle als Ringmaster |
| Ryan Dodson als Movie Theater Employee (uncredited) |
| John Schultz | Director |
| Kathy Waugh | Screenplay |
| Megan McDonald | Screenplay |
| Megan McDonald | Novel |
| Cynthia Kay Charette | Production Design |
| Shawn Maurer | Director of Photography |
| Mary Jane Fort | Costume Design |
| Richard Gibbs | Original Music Composer |
| John Pace | Editor |
| Julie Ashton | Casting |
| Don Diers | Set Decoration |
| Valerie Green | Art Direction |
| Andrew Sugerman | Unit Production Manager |
| Sarah Siegel-Magness | Producer |
| Gary Magness | Producer |
| Andrew Sugerman | Executive Producer |
| Bobbi Sue Luther | Executive Producer |
| Ryan Kavanaugh | Executive Producer |
| Tucker Tooley | Executive Producer |
| Megan McDonald | Co-Producer |
| RaMona Fleetwood | Hair Department Head |
| David Forrest | Makeup Department Head |
| Gina Fortunato | Production Supervisor |
| Steve Gehrke | Script Supervisor |
| Lisa Vijitchanton | Production Coordinator |
| Sherry Whitfield | Music Editor |
| Pat Welch | Costume Supervisor |
| Frederick Wardell | First Assistant Editor |
| Suzanne Tenner | Still Photographer |
| Caroline Wiseman | Key Hair Stylist |
| Marc Fishman | Sound Re-Recording Mixer |
| Adam Jenkins | Sound Re-Recording Mixer |
| Trevor Metz | Sound Effects Editor |
| Perry Robertson | Supervising Sound Editor |
| Edward Tise | Sound mixer |
| Scott Sanders | Supervising Sound Editor |
| Tim Abbatoye | Transportation Coordinator |
| Casey Boden | Transportation Captain |
| Joel Kramer | Stunt Coordinator |
| Sally Potters | Assistant Production Coordinator |
