Reparto
Zachary Levi
Toby
David Cross
Ian
Jason Lee
Dave
Justin Long
Alvin (voice)
Matthew Gray Gubler
Simon (voice)
Jesse McCartney
Theodore (voice)
Amy Poehler
Eleanor (voice)
Anna Faris
Jeanette (voice)
Christina Applegate
Brittany (voice)
Wendie Malick
Dr. Rubin
Anjelah Johnson-Reyes
Julie
Kathryn Joosten
Aunt Jackie
Kevin G. Schmidt
Ryan
Chris Warren
Xander
Bridgit Mendler
Becca
Aimee Carrero
Emily
Alexandra Shipp
Valentina
Gregg Binkley
Emcee
Jake Zyrus
Charice Pempengco
Bernard White
Doctor
Joy Osmanski
Airline Rep
Archie Hahn
Agent
Lanny Joon
Paramedic
Brando Eaton
Jeremy
Michael Bruno
Honor Society
Eric Bauza
Digger the NASCAR Gopher (voice)
Sean Astin
Meerkat Manor Narrator (voice)
Marty Dew
Chipmunk Dancer
Richy Jackson
Chipmunk Dancer
Mihran Kirakosian
Chipmunk Dancer
Thomasina Gross
Chipette Dancer
Rachele Brooke Smith
Chipette Dancer
Ryan Conferido
Li'l Rosero Dancer
Hokuto 'Hok' Konishi
Li'l Rosero Dancer
Ryan Feng
Li'l Rosero Dancer
Steve Terada
Li'l Rosero Dancer
Brittany Anne Pirtle
Cheerleader (uncredited)
Ross Bagdasarian, Jr.
Alvin (singing voice) (uncredited)
Janice Karman
Theodore / The Chipettes (singing voice) (uncredited)
Courtney Platt
Eleanor - Performer (voice) (uncredited)
Gee Alexander
Simon Dance Double (uncredited)
Tallie Brinson
Principal Dancer (uncredited)
David Lautman
High School Student (uncredited)
Casper Smart
Dancer (uncredited)
