Shia LaBeouf Sam Witwicky
Peter Cullen Optimus Prime (voice)
Steven Spielberg Executive Producer
John Malkovich Bruce Brazos
Michael Bay Director, Executive Producer
Patrick Dempsey Dylan
James Remar Sideswipe (voice)
Scott Farrar Visual Effects Supervisor
Tyrese Gibson Epps
Ilya Baskin Cosmonaut Dimitri
Michael Owen Stunts
Josh Duhamel Lennox
Alan Tudyk Dutch
Meredith Monroe Engineer's Wife
Tom Kenny Wheelie (voice)
Keiko Agena Mearing's Aide
Conrad E. Palmisano Stunt Driver
Frank Welker Shockwave / Soundwave (voice)
Buzz Aldrin Buzz Aldrin
John Turturro Simmons
Francesco Quinn Dino (voice)
John DiMaggio Leadfoot / Target (voice)
Annie O'Donnell Human Resources Lady
Ken Jeong Jerry Wang
Jim Schwalm Special Effects Coordinator
Peter Murnik Tracking Station Supervisor (1969)
Deborah L. Scott Costume Design
Frances McDormand Mearing
Tom Erickson Stunts
Clay Cullen Stunts
Kevin Dunn Ron Witwicky
Brian Avery Stunts
Maile Flanagan Accuretta Worker
Zack Duhame Stunts
Andy Daly Mailroom Worker
Michael Daniel Cassady NASA Launch Technician (1969)
Reno Wilson Brains (voice)
Ehren Kruger Writer
Mindy Sterling Female Insurance Agent
Karen Golden Script Supervisor
Hugo Weaving Megatron (voice)
Jack Axelrod Simmons Tileman
Robert Foxworth Ratchet (voice)
Anthony Azizi Lt. Sulimani
Joey Freitas Stunts
Tom Virtue Black Ops NASA Technician (1969)
Mike Majesky Stunts
Rex Reddick Stunts
Yiotis Panayiotou Hairstylist
Julie White Judy Witwicky
Kurt Bryant Stunt Coordinator
Charlie Adler Starscream (voice)
Glenn Morshower General Morshower
Ravil Isyanov Voshkod
C.C. Taylor Stunts
Leonard Nimoy Sentinel Prime (voice)
Iqbal Theba UN Secretary General
Rosie Huntington-Whiteley Carly
Mark Golden SEAL
Chris Gann Stunts
Josh Kelly Epps Team 'Stone'
Kenny Sheard Epps Team 'Marc L'
Keith Szarabajka Laserbeak (voice)
Colin Follenweider Stunts
Garrett Warren Fight Choreographer
John H. Tobin President Nixon
Jennifer Rudnicke Casting
Randin Brown Additional Second Assistant Director
America Young Stunts
Danny McCarthy NEST Guard
David Hutchison Stunts
Jess Harnell Ironhide (voice)