Jason Lee
Dave
David Cross
Ian
Jenny Slate
Zoe
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)
Alan Tudyk
Simone (voice)
Michael P. Northey
Hawaiian Shirt Guy
Sophia Aguiar
Club Woman #1
Lauren Gottlieb
Club Woman #2
Tera Perez
Club Woman #3
Andy Buckley
Captain Correlli
Chad Krowchuk
Waiter
Luisa d'Oliveira
Tessa
Tucker Albrizzi
Tucker / Kite Kid
Nelson Wong
Casino Guy
Michael Bagdasarian
Excursion Clerk
Amber-Rochelle DeMarco
Damsel #1
Marcela Caceres
Damsel #2
Natalie Sutcliffe
Damsel #3
Ian Harmon
Monster
Phyllis Smith
Flight Attendant
Ross Bagdasarian, Jr.
Alvin (singing voice) (uncredited)
Janice Karman
Theodore / The Chipettes (singing voice) (uncredited)
Eoin Bates
Music Executive (uncredited)
Seth Robert Dusky
Additional Voices (voice) (uncredited)
Wendell Kinney
Cruise Guest (uncredited)
Jeremy Palko
Cruise Guy (uncredited)
Rachael Wegener
Model (uncredited)
Mira Caveno
Set Designer
Julia Michels
Music Supervisor
Matthew Harrison
Foley Editor
David Betancourt
ADR Mixer
Peter Bodnarus
Set Designer
David Lucarelli
ADR Recordist
David Hadaway
Set Designer
Johnny Gidcomb
ADR Voice Casting
James Ashwill
Foley Mixer
John Morris
Supervising Sound Editor
Dan DiPrima
Supervising Music Editor
Jesse Johnstone
ADR Recordist
Casey Grant
Unit Production Manager
Anna Behlmer
Sound Re-Recording Mixer
Dan O'Connell
Foley Artist
Christine Sirois
ADR Recordist
Neil Machlis
Unit Production Manager
Doug Jackson
Sound Effects Editor
Matt Fausak
Music Editor
David Husby
Sound Mixer
James Bolt
Sound Re-Recording Mixer
John T. Cucci
Foley Artist
Galen Goodpaster
Supervising ADR Editor
Stacey Herbert
Makeup Artist
Jim Brookshire
Supervising Dialogue Editor
Monique 'Nico' Salvato
First Assistant Sound Editor
John Murray
Foley Supervisor
Lisa Love
Key Makeup Artist
Charleen Richards-Steeves
ADR Mixer
Jonathan Aibel
Writer
Glenn Berger
Writer
Tony Mecca
Animation
Aravind Jayaraman
Visual Effects
Rohit Kolhe
Animation
Sachin Bangera
Animation
Samidha Nagwekar
Animation
Dixie Pizani
Animation
Andrew Malesky
Animation
Armen Ksajikian
Musician
Phil Langone
Storyboard Artist
Ian Blum
Animation Supervisor
Thomas E. Ackerman
Director of Photography
Mark Mothersbaugh
Original Music Composer
Marilyn Giacomazzi
Stunt Double
Richard Holland
Production Design
Steve Waterman
Executive Producer
Karen Rosenfelt
Executive Producer
Rose Marie McSherry
Set Decoration
Ross Bagdasarian, Jr.
Producer
Janice Karman
Producer
Neil Machlis
Executive Producer
Peter Amundson
Editor
Allison Jones
Casting
Alexandra Welker
Costume Design
Arnon Milchan
Executive Producer
Don MacAulay
Art Direction
Mike Mitchell
Director
Melanie Cassidy
Sculptor