Ben Stiller
Larry Daley
Acting
Carla Gugino
Rebecca
Acting
Dick Van Dyke
Cecil
Acting
Mickey Rooney
Gus
Acting
Bill Cobbs
Reginald
Acting
Jake Cherry
Nick Daley
Acting
Ricky Gervais
Dr. McPhee
Acting
Robin Williams
Theodore Roosevelt
Acting
Kim Raver
Erica Daley
Acting
Patrick Gallagher
Attila the Hun
Acting
Rami Malek
Ahkmenrah
Acting
Pierfrancesco Favino
Christopher Columbus
Acting
Charlie Murphy
Taxi Driver
Acting
Steve Coogan
Octavius
Acting
Mizuo Peck
Sacajawea
Acting
Kerry van der Griend
Neanderthal #1
Acting
Dan Rizzuto
Neanderthal #2
Crew
Matthew Harrison
Neanderthal #3
Acting
Jody Racicot
Neanderthal #4
Acting
Paul Rudd
Don
Acting
Anne Meara
Debbie
Acting
Martin Christopher
Lewis
Acting
Martin Sims
Clark
Acting
Randy Lee
Hun #1
Acting
Darryl Quon
Hun #2
Acting
Gerald Wong
Hun #3
Acting
Paul Cheng
Hun #4
Acting
Teagle F. Bougere
Teacher (Mike)
Acting
Pat Kiernan
TV News Anchor
Acting
Nico McEown
Friend #1
Acting
Meshach Peters
Friend #2
Acting
Matthew Walker
Politician
Acting
Jason McKinnon
Irish Worker
Acting
Jono Lee
Chinese Rail Worker
Acting
Jason Vaisvila
Viking
Acting
Cade Wagar
Viking
Acting
Cory Martin
Chinese Terra Cota Soldier
Acting
Brad Garrett
Easter Island Head (voice)
Acting
Crystal the Monkey
Dexter
Acting
Che Landon
Pretty Tourist Girl (uncredited)
Acting
Phil Proctor
Moose (uncredited)
Acting
Gary Sievers
Viking Warrior (uncredited)
Acting
Owen Wilson
Jedediah Smith (uncredited)
Acting