Peter Cullen

Optimus Prime / Streetwise / Nightstick / Slugslinger / Wingspan · Optimus Prime (voice)

Shia LaBeouf

Sam Witwicky

Megan Fox

Mikaela Banes

Frank Welker

Megatron (voice) / Soundwave (voice)

Mark Ryan

Bumblebee (voice)

Hugo Weaving

Megatron (voice)

Jack Angel

Ultra Magnus / Cyclonus (voice)

Josh Duhamel

Captain Lennox

Tyrese Gibson

USAF Tech Sergeant Epps

Charlie Adler

Starscream (voice)

Corey Burton

Spike Witwicky (voice)

Rachael Taylor

Maggie Madsen

Susan Blu

Arcee (voice)

Anthony Anderson

Glen Whitmann

Jon Voight

Defense Secretary John Keller

John Turturro

Agent Simmons

Michael O'Neill

Tom Banacheck

Hal Rayle

Snarl / Shrapnel / Pipes

Kevin Dunn

Ron Witwicky

Julie White

Judy Witwicky

Amaury Nolasco

ACWO Jorge 'Fig' Figueroa

Casey Kasem

Cliffjumper / Bluestreak / Teletraan 1

Dan Gilvezan

Bumblebee (voice)

Zack Ward

First Sergeant Donnelly

David Mendenhall

Daniel Witwicky (voice)

Ed Gilbert

Thrust / Blitzwing / Superion

Luis Echagarruga

Ranger Team

Christopher Collins

Starscream / Wheeljack / Sparkplug / Reflector · Skullcruncher (voice)

John Stephenson

Thundercracker / Windcharger / Huffer

Patrick Mulderrig

Ranger Team

Richard Gautier

Hot Rod (voice)

Scatman Crothers

Jazz (voice)

Brian Shehan

Ranger Team

Victor Caroli

Narrator (voice)

Michael Trisler

Ranger Team

Neil Ross

Crosshairs (voice) · Bonecrusher / Hook / Slag

Ashkan Kashanchi

Mahfouz

Ken Sansom

Hound

Jim Cummings

Afterburner / Rippersnapper

Rizwan Manji

Akram

Aron Kincaid

Sky Lynx (voice)

William Morgan Sheppard

Captain Witwicky

C.J. Thomason

Sailor

Bernie Mac

Bobby Bolivia

Peter Renaday

Grapple

Carlos Moreno Jr.

Manny

Johnny Sanchez

Clown

John Robinson

Miles

Michael Bell

Prowl / Bombshell / Sideswipe/ Swoop

Travis Van Winkle

Trent

Michael Horton

Chip Chase

Peter Jacobson

Mr. Hosney

Glenn Morshower

SOCCENT Sergeant

Regis Cordic

Menasor

Frederic Doss

SOCCENT Op-Centre Tech

Paul Eiding

Perceptor (voice)

Charlie Bodin

SOCCENT Op-Centre Tech

Stan Jones

Misfire (voice)

Joshua Feinman

USAF Staff Sergeant

Chris Ellis

Admiral Brigham

Steve Bulen

Sureshot (voice)

Steven Ford

Four Star General

John Moschitta Jr.

Blurr (voice)

Michael Shamus Wiles

Two Star General

Craig Barnett

Air Force Major General

Johnny Haymer

Highbrow (voice)

Brian Prescott

Keller Aide

Jered Barclay

Cerebros (voice)

Scott Peat

Pentagon Watch Commander

Brian Stepanek

Sector Seven Agent

Jamie McBride

FBI Agent

Wiley M. Pickett

FBI Agent

Andy Milder

R&D Team Leader

Samantha Smith

Sarah Lennox

Ravi Patel

Telephone Operator

Rick Gomez

Sheriff

Tom Lenk

Analyst

Jamison Yang

Analyst

Esther Scott

Glen's Grandmother

Madison Mason

CNN Reporter

Andrew Lewis Caldwell

Café Kid

J.P. Manoux

Witness

Pete Gardner

Dad

Michael Adams

AWACS Controller

Jason White

AWACS Controller

Odette Annable

Socialite

Bob Stephenson

Xbox Guy

Robert Foxworth

Ratchet (voice)

Jess Harnell

Ironhide / Barricade (voice)

Reno Wilson

Frenzy (voice)

Michael Bay

Guy Flicked by Megatron (uncredited)

Colton Haynes

Cafe Kid (uncredited)

Omar Benson Miller

Glen's Cousin (uncredited)

James Hunter

Cop (uncredited)

Don Messick

Carl Andrews (voice)

Gregg Berger

Grimlock (voice)

Stephen Keener

Mindwipe (voice)

Alan Oppenheimer

Acteur

Jeff MacKay

Fireflight (voice)

Michael McConnohie

Acteur

Tony Pope

Wreck-Gar (voice) · Alpha Trion (voice)

Linda Gary

Acteur

Arthur Burghardt

Devastator (voice)

Beau Weaver

Octane (voice)

Jerry Houser

Sandstorm (voice)

Laurie Faso

Acteur

Mona Marshall

Aron (voice) / Marty (voice)

Michael Chain

Raoul (voice)

T.K. Carter

Rocksteady (voice)

Marlene Aragon

Elita-1 (voice)

Brad Garrett

Trypticon (voice)

Morgan Lofting

Doctor Harding (voice)

Wally Burr

Kremzeek (voice)

Roger C. Carmel

Abdul Ben-F'aisal (voice)

Clive Revill

Kickback (voice)