Zachary Levi
Toby
Acting
David Cross
Ian
Acting
Jason Lee
Dave
Acting
Justin Long
Alvin (voice)
Acting
Matthew Gray Gubler
Simon (voice)
Acting
Jesse McCartney
Theodore (voice)
Acting
Amy Poehler
Eleanor (voice)
Acting
Anna Faris
Jeanette (voice)
Acting
Christina Applegate
Brittany (voice)
Acting
Wendie Malick
Dr. Rubin
Acting
Anjelah Johnson-Reyes
Julie
Acting
Kathryn Joosten
Aunt Jackie
Acting
Kevin G. Schmidt
Ryan
Acting
Chris Warren
Xander
Acting
Bridgit Mendler
Becca
Acting
Aimee Carrero
Emily
Acting
Alexandra Shipp
Valentina
Acting
Gregg Binkley
Emcee
Acting
Jake Zyrus
Charice Pempengco
Acting
Bernard White
Doctor
Acting
Adele Jacques
Nurse
Acting
Joy Osmanski
Airline Rep
Acting
Archie Hahn
Agent
Acting
Lanny Joon
Paramedic
Acting
Brando Eaton
Jeremy
Acting
Michael Bruno
Honor Society
Acting
Andrew Lee Schmidt
Honor Society
Acting
Alexander Noyes
Honor Society
Acting
Jason Rosen
Honor Society
Acting
Ali Mikles
Screaming Fan
Acting
Eric Bauza
Digger the NASCAR Gopher (voice)
Acting
Sean Astin
Meerkat Manor Narrator (voice)
Acting
Marty Dew
Chipmunk Dancer
Acting
Richy Jackson
Chipmunk Dancer
Acting
Mihran Kirakosian
Chipmunk Dancer
Acting
Janelle Ginestra
Chipette Dancer
Acting
Thomasina Gross
Chipette Dancer
Acting
Rachele Brooke Smith
Chipette Dancer
Acting
Ryan Conferido
Li'l Rosero Dancer
Acting
Hokuto 'Hok' Konishi
Li'l Rosero Dancer
Acting
Ryan Feng
Li'l Rosero Dancer
Acting
D-Trix
Li'l Rosero Dancer
Acting
Brian Hirano
Li'l Rosero Dancer
Acting
Steve Terada
Li'l Rosero Dancer
Acting
Victor Kim
Li'l Rosero Dancer
Acting
Brittany Anne Pirtle
Cheerleader (uncredited)
Acting
Ross Bagdasarian, Jr.
Alvin (singing voice) (uncredited)
Acting
Janice Karman
Theodore / The Chipettes (singing voice) (uncredited)
Acting
Courtney Platt
Eleanor - Performer (voice) (uncredited)
Acting
Gee Alexander
Simon Dance Double (uncredited)
Crew
Mark Alkofer
Football Referee (uncredited)
Crew
Tallie Brinson
Principal Dancer (uncredited)
Acting
Ericka Clevenger
Cheerleader (uncredited)
Acting
Sean Decker
Dodgeball Player (uncredited)
Acting
Sarah Fontenot
Cheerleader (uncredited)
Acting
Paul Gonzales
Charice Bassist (uncredited)
Sound
David Lautman
High School Student (uncredited)
Acting
Casper Smart
Dancer (uncredited)
Acting
Andrew 'Drew' Thompson
Stadium Announcer (uncredited)
Editing