John Leguizamo Sid (voice)
Denis Leary Diego (voice)
Stephen Root Aardvark Dad (voice)
Alan Tudyk Cholly (voice)
Seann William Scott Crash (voice)
Queen Latifah Ellie (voice)
Bill Farmer Additional Voices (voice)
Ray Romano Manny (voice)
Ariel Winter Additional Voices (voice)
Will Arnett Lone Gunslinger Vulture (voice)
Mindy Sterling Female Ox (voice)
Josh Peck Eddie (voice)
Jay Leno Fast Tony (voice)
Carlos Saldanha Director, Dodo (voice)
Laraine Newman Additional Voices (voice)
Chris Renaud Story Artist
Debi Derryberry Diatryma Mom (voice)
Paul Butcher Additional Voices (voice)
Laura Marano Additional Voices (voice)
John Powell Original Music Composer
Joseph Bologna Mr. Start (voice)
Clea Lewis Female Mini Sloth (voice)
Madeleine Martin Additional Voices (voice)
Bob Bergen Additional Voices (voice)
Jess Harnell Additional Voices (voice)
Jennifer Darling Additional Voices (voice)
Renée Taylor Mrs. Start (voice)
Mickie McGowan Additional Voices (voice)
Randy Thom Sound Designer, Supervising Sound Editor, Sound Mixer
Rodger Bumpass Additional Voices (voice)
Jim Passon Color Timer
Chris Meledandri Executive Producer
James Sie Freaky Male (voice)
Jan Rabson Additional Voices (voice)
Brandon Proctor Sound Mix Technician
Chris Wedge Scrat (voice), Executive Producer
Michael Thurmeier Visual Effects, Supervising Animator
Crispin Freeman Additional Voices (voice)
Gwendolyn Yates Whittle Supervising ADR Editor, Supervising Sound Editor
Al Nelson Sound Effects Editor
Jansen Panettiere Shovelmouth Boy (voice)
Nick Bruno Animation
Matt Romano Start Boy 2 (voice)
Ellen Heuer Foley Artist
Gary Burritt Negative Cutter
Jon Vitti Story Consultant
Peter de Sève Condor Chick (voice), Character Designer
Peter Gaulke Story, Screenplay
Danny Mann Additional Voices (voice)
Jack Angel Additional Voices (voice)
Pete Anthony Conductor
Shawn Murphy Scoring Mixer
Peter Ackerman Dung Beetle Dad (voice)
Brett Hoffman Script Coordinator, Story Coordinator
Dennie Thorpe Foley
George Doering Musician
Bruce Fowler Orchestrator
Gerry Swallow Screenplay, Story
Zack Shada Additional Voices (voice)
Shane Baumel Additional Voices (voice)
Lora Hirschberg Sound Mixer
Bob Camp Story Artist
Jim Hecht Screenplay
Harrison Fahn Additional Voices (voice)
Chris Scarabosio Sound Mixer
Gregory Romano Start Boy 1 (voice)
Sofia Scarpa Saldanha Molehog Kid 2 (voice)
John Cygan Additional Voices (voice)
Karen Disher Story Artist
Claudia Besso Additional Voices (voice)
Douglas Murray Supervising Sound Editor
Will Files Assistant Sound Designer