Rachel McAdams Regina George
Amanda Seyfried Karen Smith
Tina Fey Ms. Norbury, Screenplay
Amy Poehler Mrs. George
Lizzy Caplan Janis Ian
Mary Jane Fort Costume Design
Lacey Chabert Gretchen Wieners
Neil Flynn Cady's Dad
Lindsay Lohan Cady Heron
John Stoneham Jr. Stunt Coordinator
Laura de Carteret Mrs. Wedell
Jonathan Bennett Aaron Samuels
Sarah Monat Foley Artist
Diego Klattenhoff Shane Oman
Randy K. Singer Foley Mixer
Richard 'Rico' Emerson First Company Grip
Tim Meadows Mr. Duvall
Patrick Cyccone Jr. Sound Re-Recording Mixer
Amanda Scheer-Demme Music Supervisor
Lorne Michaels Producer
Louise Rosner-Meyer Unit Production Manager, Co-Producer
Mario Cacioppo Makeup Artist
Ana Gasteyer Cady's Mom
Robert Ulrich Supervising ADR Editor
Dana E. Glauberman Additional Editing
Bryan J. Thomas Stunts
Mark Waters Director
Ely Henry Homeschooled Boy
Jill Morrison Crying Girl
Eve Crawford English Teacher
Joanne T. Harwood Script Supervisor
Daniel DeSanto Jason
Robin Harlan Foley Artist
Mike Szakmeister Supervising Dialogue Editor
Miranda Edwards Michigan Girl
Robin D. Cook Casting
Patricia Cuccia Set Decoration
Daniel Franzese Damian
James Powers Production Manager
Jonathan Malen Kristen's Boyfriend
Marc Fishman Sound Re-Recording Mixer
Stefanie Drummond Bethany Byrd
Julie Feiner ADR Editor
Angelique Lewis Stunts
Bob Baron ADR Mixer
Alison Reid Stunts
Chuck Michael Supervising Sound Editor
David Reale Glenn Coco (uncredited)
Brandt Gordon Art Direction
Rolfe Kent Original Music Composer
Jamie Sparer Roberts Casting Associate
Billy Oliver Stunts
Jim Harrison Music Editor
Susan Kurtz Dialogue Editor
Mike Stanwick Color Timer
Sarah Campbell Second Assistant Director
Buck Damon Music Supervisor
Taryn Ash Stunts
Dan Willmott Mr. George
Saul Saladow Assistant Editor
Frank Smathers Dialogue Editor
Anne Couk Assistant Sound Editor
Cary White Production Design
Gerrod Shully Production Assistant
Mary Nelson Negative Cutter
Michael Carella "B" Camera Operator
Jack Newman History Teacher
Bruce Hunter Mathlete Moderator
Angelo Colavecchia Camera Operator, Steadicam Operator
Wendy Greene Bricmont Editor
Adam Bocknek Production Assistant
Sharron Matthews Joan the Secretary