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
Jon Vitti Screenplay, Story
Ross Bagdasarian, Jr. Alvin (singing voice) (uncredited)
Adriane Lenox Vet
Janice Karman Producer, Theodore (singing voice) (uncredited)
Debbie Evans Stunts
Arnon Milchan Executive Producer
Tim Hill Director
Melanie Lewis Dancer
Paul Massey Sound Mixer
Ross Bagdasarian Producer, Characters
Jayden Lund Security Guard
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
Alicia Stevenson Foley Artist
Erin Chambers Press Coordinator
Christopher Lennertz Original Music Composer
George Fisher Stunts
Chris Viscardi Screenplay
Celestina Aladekoba Dancer
Mindy Marin Casting
Frank Maharajh Barry
Oliver Muirhead Butler
Michele Panelli-Venetis Associate Producer
Dawn Fintor Foley Artist
Toni-Ann Walker Hair Department Head
Rosero McCoy Choreographer
Christopher Scott Dancer
Craig T. Shordon Set Painter
Gary Burritt Negative Cutter
Michele Imperato Stabile Executive Producer, Unit Production Manager
Nick Drago Dancer
Jillian Warry Barberie Jillian Reynolds
Allison Karman Female Intern 1
Mildred Iatrou Supervising Sound Editor
Gloria D'Alessandro Dialogue Editor
Shane D. Kelly Gaffer
Susan Dawes Supervising Sound Editor
Christopher Flick Foley Editor
Tim Gomillion Sound Recordist
John Moio Stunt Coordinator
Karen Rosenfelt Executive Producer
Angelo Libutti Animation
Armen Ksajikian Musician
Julianne Jordan Music Supervisor
John Murray Foley Supervisor
Peter E. Berger Editor
David Giammarco Sound Mixer
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
David MacMillan Production Sound Mixer
Veronica Alicino Amy
Leigh Shanta Unit Production Manager
Will McRobb Screenplay