Megan Fox Mikaela Banes
Steven Spielberg Executive Producer
Shia LaBeouf Sam Witwicky
Josh Duhamel Major Lennox
Frank Welker Soundwave / Devastator / Reedman (voice)
Kevin Michael Richardson Prime #2 / Skipjack (voice)
Hugo Weaving Megatron (voice)
Michael Bay Executive Producer, Director
Tom Kenny Wheelie / Skids (voice)
Grey DeLisle Arcee (voice)
Hans Zimmer Thanks
Tyrese Gibson USAF Chief Master Sergeant Epps
Peter Cullen Optimus Prime (voice)
John Turturro Simmons
Ramón Rodríguez Leo Spitz
Rainn Wilson Professor Colan
Alex Kurtzman Writer
Tony Todd Fallen (voice)
Kevin Dunn Ron Witwicky
Glenn Morshower General Morshower
Michael York Prime #1 (voice)
Andrew Howard Special Air Service Forces
Marc Evan Jackson Commander, US Central Command
Isabel Lucas Alice
Roberto Orci Writer
Spencer Garrett Air Force Chief of Staff
Reno Wilson Mudflap (voice)
John Benjamin Hickey Galloway
Matthew Marsden Special Air Service Forces
Robert Foxworth Ratchet (voice)
America Olivo Frisbee Girl
Ethan Van der Ryn Supervising Sound Editor
Robin Atkin Downes Prime #3 (voice)
Katie Lowes April the Resident Assistant
Alicia Vela-Bailey Stunts
Jess Harnell Ironhide (voice)
Charlie Adler Starscream (voice)
Lauren Mary Kim Stunts
Lorenzo di Bonaventura Producer
Joel Negron Editor
Deep Roy Egyptian Guard
Michael Papajohn Cal
Cas Anvar Egyptian Interpol Officer
Ehren Kruger Writer
Julie White Judy Witwicky
Aaron Hill Frat Guy
Steve Kelso Stunt Driver
Philip Tan Stunts
Alex Fernandez Joint Ops Staff
André Sogliuzzo Sideswipe (voice)
Josh Kelly Strike Force Team
Rick Cramer Diego Garcia Soldier
Christopher Curry Pundit
Donna Evans Stunts
Kazu Hiro Special Effects Makeup Artist
Jimmy N. Roberts Stunt Driver
Steve Jablonsky Original Music Composer
Jessie Graff Stunt Double
Annie Korzen Simmons Mom
Michael Benyaer Egyptian Interpol Officer
Jeff Lew Animation
Deborah L. Scott Costume Design
Greg P. Russell Sound Re-Recording Mixer
Hank Amos Stunts
David Bowe Smithsonian Guard
John Eric Bentley Aide
Eric Pierpoint NSA Officer
Matt Iseman C-17 Pilot (uncredited)
Bruno Van Zeebroeck Special Effects Coordinator
P.K. Hooker Sound Effects Editor
Denise Chamian Casting
Greg ten Bosch Sound Effects Editor