John Leguizamo Sid (voice)
Denis Leary Diego (voice)
Joey King Beaver Girl (voice)
Kristen Wiig Pudgy Beaver Mom (voice)
Simon Pegg Buck (voice)
Queen Latifah Ellie (voice), Songs
Frank Welker Momma Dino / Rudy (voice) (uncredited)
Seann William Scott Crash (voice)
Jane Lynch Diatryma Mom (voice)
Josh Peck Eddie (voice)
Bill Hader Gazelle (voice)
Carlos Saldanha Dinosaur Babies / Flightless Bird (voice), Director
Ray Romano Manny (voice)
John Powell Original Music Composer
Chris Renaud Additional Storyboarding
Maile Flanagan Aardvark Mom (voice)
Selenis Leyva Additional Voice (voice)
Chris Wedge Scrat (voice), Executive Producer
Clea Lewis Start Mom (voice)
Randy Thom Sound Designer, Sound Re-Recording Mixer
Mike Reiss Screenplay
John Donkin Producer
Peter Ackerman Screenplay
Jason Carter Eaton Story
Yoni Brenner Screenplay
Michael Thurmeier Co-Director
Michael Berg Screenplay
Matt Adler Additional Voice (voice)
Lora Hirschberg Sound Re-Recording Mixer
David McCharen Additional Voice (voice)
Bea Miller Additional Voice / ADR Group (voice)
Regan Mizrahi Additional voices / ADR Group
Gwendolyn Yates Whittle Supervising Sound Editor
Shawn Murphy Scoring Mixer
Johnathan Tchaikovsky Additional Voice (voice)
Richard Hymns ADR Editor
Steve Alterman Additional Voice (voice)
Eric Favela Storyboard Artist
Claudia Besso Additional Voice (voice)
June Christopher Additional Voice (voice)
Harrison Fahn Glypto Boy (voice)
Min Kang Animation
Pamala Tyson Additional Voice (voice)
Devika Parikh Additional Voice (voice)
Peter de Sève Character Designer
JP Sans Animation
Holly Dorff ADR Voice Casting, Additional Voice (voice)
Allegra Leguizamo Aardvark Girl (voice)
Joseph Romano Ronald (Shovelmouth Boy) (voice)
Anthony Amorim Additional Voice (voice)
Randy Kerber Orchestrator
Jana Vance Foley
Karen Disher Scratte (voice), Storyboard Artist
Kyrsten Mate Sound Effects Editor
Dennie Thorpe Foley
Christian Kaplan Casting
John Ashton Thomas Orchestrator
Nathan Engelhardt Animation
Chris Regan Color Timer
Fletcher Sheridan Playback Singer
Andrew Coats Animation
Conrad Pope Orchestrator
Jeff Biancalana Storyboard Artist
Greg Anderson Digital Compositors
Lori Forte Producer
Christian Pikes Little Johnny (Aardvark Kid) (voice)
George Doering Musician
Moroni Taylor Storyboard Artist
Lucas Leguizamo Aardvark Boy / Beaver Kid #2 (voice)
Galen T. Chu Animation Supervisor
Cheryl Nardi Dialogue Editor
Nicole Ehinger Additional Voice (voice)