Anna Faris Jeanette (voice)
Justin Long Alvin (voice)
Sean Astin Meerkat Manor Narrator (voice)
Amy Poehler Eleanor (voice)
Jason Lee Dave
Zachary Levi Toby
Wendie Malick Dr. Rubin
Christina Applegate Brittany (voice)
David Cross Ian
Alexandra Shipp Valentina
Matthew Gray Gubler Simon (voice)
Eric Bauza Digger the NASCAR Gopher (voice)
Aimee Carrero Emily
Jesse McCartney Theodore (voice)
Brando Eaton Jeremy
Bernard White Doctor
Kevin G. Schmidt Ryan
Glenn Berger Writer
Anjelah Johnson-Reyes Julie
Laura Graham ADR Editor
Jonathan Aibel Writer
Arnon Milchan Executive Producer
Bridgit Mendler Becca
Lanny Joon Paramedic
David Lucarelli Sound Recordist
Alicia Stevenson Foley Artist
Joy Osmanski Airline Rep
Jon Vitti Writer
Gregg Binkley Emcee
Chuck Michael Sound Effects Editor
Ross Bagdasarian, Jr. Producer, Alvin (singing voice) (uncredited)
Betty Thomas Director
Janice Karman Producer, Theodore / The Chipettes (singing voice) (uncredited)
David Newman Original Music Composer
Kathryn Joosten Aunt Jackie
Chris Warren Xander
Willie D. Burton Sound Mixer
R.J. Kizer ADR Editor
Steven Lambert Stunts
David Betancourt Foley Mixer
Rachele Brooke Smith Chipette Dancer
Paul Sonski Set Designer
Juel Bestrop Casting
Dawn Fintor Foley Artist
Michael Keller Sound Re-Recording Mixer
Jeff Carson Music Editor
Julianne Jordan Music Supervisor
Doug Jackson Sound Effects Editor
Mildred Iatrou Supervising Sound Editor
Julie D'Antoni Visual Effects
Ross Bagdasarian Characters
Scott Curtis Foley Editor
Dan DiPrima Supervising Music Editor
Tim Gomillion Sound Recordist
David 'Goldy' Goldsmith Video Assist Operator
Nancy MacLeod Sound Effects Editor
Cheri Minns Makeup Department Head
David Lautman High School Student (uncredited)
Rebecca Robertson Script Supervisor
Lori McCoy-Bell Hair Department Head
Archie Hahn Agent
John Murray Foley Supervisor
Charles Crivier Key Grip
Seth Yanklewitz Casting
Galen Goodpaster First Assistant Sound Editor
Jake Zyrus Charice Pempengco
Elena Arroy Key Makeup Artist
Gee Alexander Simon Dance Double (uncredited)
Michael J. Benavente Supervising Sound Editor
Steven R. Mathis Gaffer
Anthony B. Richmond Director of Photography
Karen Rosenfelt Executive Producer