Toby

Zachary Levi

Acting

Ian

David Cross

Acting

Dave

Jason Lee

Acting

Alvin (voice)

Justin Long

Acting

Simon (voice)

Matthew Gray Gubler

Acting

Theodore (voice)

Jesse McCartney

Acting

Eleanor (voice)

Amy Poehler

Acting

Jeanette (voice)

Anna Faris

Acting

Brittany (voice)

Christina Applegate

Acting

Dr. Rubin

Wendie Malick

Acting

Julie

Anjelah Johnson-Reyes

Acting

Aunt Jackie

Kathryn Joosten

Acting

Ryan

Kevin G. Schmidt

Acting

Xander

Chris Warren

Acting

Becca

Bridgit Mendler

Acting

Emily

Aimee Carrero

Acting

Valentina

Alexandra Shipp

Acting

Emcee

Gregg Binkley

Acting

Charice Pempengco

Jake Zyrus

Acting

Doctor

Bernard White

Acting

Nurse

Adele Jacques

Acting

Airline Rep

Joy Osmanski

Acting

Agent

Archie Hahn

Acting

Paramedic

Lanny Joon

Acting

Jeremy

Brando Eaton

Acting

Honor Society

Michael Bruno

Acting

Honor Society

Andrew Lee Schmidt

Acting

Honor Society

Alexander Noyes

Acting

Honor Society

Jason Rosen

Acting

Screaming Fan

Ali Mikles

Acting

Digger the NASCAR Gopher (voice)

Eric Bauza

Acting

Meerkat Manor Narrator (voice)

Sean Astin

Acting

Chipmunk Dancer

Marty Dew

Acting

Chipmunk Dancer

Richy Jackson

Acting

Chipmunk Dancer

Mihran Kirakosian

Acting

Chipette Dancer

Janelle Ginestra

Acting

Chipette Dancer

Thomasina Gross

Acting

Chipette Dancer

Rachele Brooke Smith

Acting

Li'l Rosero Dancer

Ryan Conferido

Acting

Li'l Rosero Dancer

Hokuto 'Hok' Konishi

Acting

Li'l Rosero Dancer

Ryan Feng

Acting

Li'l Rosero Dancer

D-Trix

Acting

Li'l Rosero Dancer

Brian Hirano

Acting

Li'l Rosero Dancer

Steve Terada

Acting

Li'l Rosero Dancer

Victor Kim

Acting

Cheerleader (uncredited)

Brittany Anne Pirtle

Acting

Alvin (singing voice) (uncredited)

Ross Bagdasarian, Jr.

Acting

Theodore / The Chipettes (singing voice) (uncredited)

Janice Karman

Acting

Eleanor - Performer (voice) (uncredited)

Courtney Platt

Acting

Simon Dance Double (uncredited)

Gee Alexander

Crew

Football Referee (uncredited)

Mark Alkofer

Crew

Principal Dancer (uncredited)

Tallie Brinson

Acting

Cheerleader (uncredited)

Ericka Clevenger

Acting

Dodgeball Player (uncredited)

Sean Decker

Acting

Cheerleader (uncredited)

Sarah Fontenot

Acting

Charice Bassist (uncredited)

Paul Gonzales

Sound

High School Student (uncredited)

David Lautman

Acting

Dancer (uncredited)

Casper Smart

Acting

Stadium Announcer (uncredited)

Andrew 'Drew' Thompson

Editing