Shia LaBeouf
as Sam Witwicky

Megan Fox
as Mikaela Banes

Mark Ryan
as Bumblebee (voice)

Peter Cullen
as Optimus Prime (voice)

Hugo Weaving
as Megatron (voice)

Josh Duhamel
as Captain Lennox

Tyrese Gibson
as USAF Tech Sergeant Epps

Charlie Adler
as Starscream (voice)

Rachael Taylor
as Maggie Madsen

Anthony Anderson
as Glen Whitmann

Jon Voight
as Defense Secretary John Keller

John Turturro
as Agent Simmons

Michael O'Neill
as Tom Banacheck

Kevin Dunn
as Ron Witwicky

Julie White
as Judy Witwicky

Amaury Nolasco
as ACWO Jorge 'Fig' Figueroa

Zack Ward
as First Sergeant Donnelly

Luis Echagarruga
as Ranger Team

Patrick Mulderrig
as Ranger Team

Brian Shehan
as Ranger Team

Michael Trisler
as Ranger Team

Ashkan Kashanchi
as Mahfouz

Rizwan Manji
as Akram

William Morgan Sheppard
as Captain Witwicky

C.J. Thomason
as Sailor

Bernie Mac
as Bobby Bolivia

Carlos Moreno Jr.
as Manny

Johnny Sanchez
as Clown

John Robinson
as Miles

Travis Van Winkle
as Trent

Peter Jacobson
as Mr. Hosney

Glenn Morshower
as SOCCENT Sergeant

Frederic Doss
as SOCCENT Op-Centre Tech

Charlie Bodin
as SOCCENT Op-Centre Tech

Joshua Feinman
as USAF Staff Sergeant

Chris Ellis
as Admiral Brigham

Steven Ford
as Four Star General

Michael Shamus Wiles
as Two Star General

Craig Barnett
as Air Force Major General

Brian Prescott
as Keller Aide

Scott Peat
as Pentagon Watch Commander

Colleen Porch
as Enlisted Aide

Brian Stepanek
as Sector Seven Agent

Jamie McBride
as FBI Agent

Wiley M. Pickett
as FBI Agent

Andy Milder
as R&D Team Leader

Brian Reece
as Moustache Man

Samantha Smith
as Sarah Lennox

Ravi Patel
as Telephone Operator

Rick Gomez
as Sheriff

Andy Dominguez
as Deputy

Mike Fisher
as Football Coach

Colin Fickes
as Analyst

Tom Lenk
as Analyst

Jamison Yang
as Analyst

Esther Scott
as Glen's Grandmother

Madison Mason
as CNN Reporter

Jeremy Jojola
as News Reporter

Jessica Kartalija
as News Reporter

Andrew Altonji
as Café Kid

Andrew Lewis Caldwell
as Café Kid

J.P. Manoux
as Witness

Pete Gardner
as Dad

Sophie Bobal
as Little Girl

Laurel Garner
as Mom in Car

Chip Hormess
as Boy in Car

Ray Toth
as Pilot

Michael Adams
as AWACS Controller

Ron Henry
as AWACS Controller

Benjamin Hoffman
as AWACS Controller

Michael McNabb
as AWACS Controller

Jason White
as AWACS Controller

Adam Ratajczak
as Control Tower Tech

Maja Kljun
as Socialite

Michelle Pierce
as Socialite

Odette Annable
as Socialite

Bob Stephenson
as Xbox Guy

Mason Rock Bay
as Mason the Mastiff Dog

Darius McCrary
as Jazz (voice)

Robert Foxworth
as Ratchet (voice)

Jess Harnell
as Ironhide / Barricade (voice)

Jimmie Wood
as Bonecrusher (voice)

Reno Wilson
as Frenzy (voice)

Michael Bay
as Guy Flicked by Megatron (uncredited)

Colton Haynes
as Cafe Kid (uncredited)

Omar Benson Miller
as Glen's Cousin (uncredited)

Robert Gerrits
as Secret Service Agent (uncredited)