Justin Long Alvin (voice)
Cameron Richardson Claire
Jason Lee Dave
Jane Lynch Gail
David Cross Ian
Beth Riesgraf Mother in Store
Matthew Gray Gubler Simon (voice)
Jesse McCartney Theodore (voice)
Emily Ferry Property Master
Ross Bagdasarian, Jr. Alvin (singing voice) (uncredited)
Adriane Lenox Vet
Janice Karman Producer, Theodore (singing voice) (uncredited)
Jon Vitti Screenplay, Story
Tim Hill Director
Melanie Lewis Dancer
Ross Bagdasarian Producer, Characters
Debbie Evans Stunts
Paul Massey Sound Mixer
Arnon Milchan Executive Producer
Jayden Lund Security Guard
Gary Burritt Negative Cutter
Peter Lyons Collister Director of Photography
Emily A. Wilson Art Department Coordinator
R.J. Kizer ADR Editor
John Robotham Stunts
Kevin Symons Ted
Anne D. McCulley Set Decoration
Erin Chambers Press Coordinator
Alicia Stevenson Foley Artist
George Fisher Stunts
Michele Panelli-Venetis Associate Producer
Chris Viscardi Screenplay
Celestina Aladekoba Dancer
Toni-Ann Walker Hair Department Head
Frank Maharajh Barry
Christopher Lennertz Original Music Composer
Oliver Muirhead Butler
Rosero McCoy Choreographer
Christopher Scott Dancer
Mildred Iatrou Supervising Sound Editor
Craig T. Shordon Set Painter
Jillian Warry Barberie Jillian Reynolds
Mindy Marin Casting
Nick Drago Dancer
Kevin E. Patterson Utility Sound
Allison Karman Female Intern 1
Gloria D'Alessandro Dialogue Editor
David MacMillan Production Sound Mixer
Shane D. Kelly Gaffer
Christopher Flick Foley Editor
John Moio Stunt Coordinator
Susan Dawes Supervising Sound Editor
Karen Rosenfelt Executive Producer
Tim Gomillion Sound Recordist
Angelo Libutti Animation
Dawn Fintor Foley Artist
Armen Ksajikian Musician
Julianne Jordan Music Supervisor
Tiara Parker Female Intern 2
John Murray Foley Supervisor
Peter E. Berger Editor
Michele Imperato Stabile Executive Producer, Unit Production Manager
David Betancourt Foley Mixer
Cheri Minns Makeup Department Head
Richard Holland Production Design
Jaimie Trueblood Still Photographer
Natalie Cohen Poolside Girl (uncredited)
Alexandra Welker Costume Design
Dennis Rogers Sound Recordist
Perry Dodgson Boom Operator
Veronica Alicino Amy
Justin Hammond Lighting Technician