Ben Stiller as Tugg Speedman

Robert Downey Jr. as Kirk Lazarus

Jack Black as Jeff Portnoy

Jay Baruchel as Kevin Sandusky

Brandon T. Jackson as Alpa Chino

Brandon Soo Hoo as Tran

Matthew McConaughey as Rick Peck

Nick Nolte as Four Leaf Tayback

Danny McBride as Cody

Steve Coogan as Damien Cockburn

Bill Hader as Rob Slolom

Reggie Lee as Byong

Trieu Tran as Tru

Tobey Maguire as Tobey Maguire

Tyra Banks as Tyra Banks

Jon Voight as Jon Voight

Jennifer Love Hewitt as Jennifer Love Hewitt

Alicia Silverstone as Alicia Silverstone

Jason Bateman as Jason Bateman

Christine Taylor as Rebecca - Simple Jack Clip

Jeff Kahn as Snooty Waiter - Fatties Trailer

Anthony Ruivivar as Platoon Sergeant Shot in Head - Hot LZ

Eric Winzenried as Chopper Pilot - Hot LZ

Valerie Azlynn as Damien's Assistant - Vietnam Crew

Matt Levin as Cameraperson - Vietnam Crew

David Pressman as First Assistant Director - Vietnam Crew

Amy Stiller as Script Supervisor - Vietnam Crew

Dempsey Silva as Special Effects Assistant - Vietnam Crew

Jeff Weidemann as Speedman Assistant - Vietnam Crew

Nadine Ellis as Speedman Assistant - Vietnam Crew

Rachel Avery as Speedman Assistant - Vietnam Crew

Darryl Farmer as Alpa's Posse - Vietnam Crew

Rod Tate as Alpa's Posse - Vietnam Crew

Maria Menounos as Maria Menounos

Jel Galiza as Speedman's Chef - Speedman's Mansion

Andrea De Oliveira as Speedman's Trainer - Speedman's Mansion

Yvette Nicole Brown as Peck's Assistant - Peck's Office

J. Thomas Chon as Half Squat - Flaming Dragon Compound

Jacob Chon as Half Squat - Flaming Dragon Compound

Tom Cruise as Les Grossman

Mini Anden as Grossman's Secretary - Grossman's Office

Mike Hoagland as Grossman's Assistant - Grossman's Office

Lance Bass as Himself - Awards Ceremony

Linda Bella as Jon Voight's Date (uncredited)

Denise Bradley as Academy Awards Guest (uncredited)

Ella Christopher as Stewardess (uncredited)

Natalie Cohen as Stewardess (uncredited)

Larry Cruz as Gorilla Soldier (uncredited)

Angela Daun as Starlet (uncredited)

Clark DeVol as Sack Race Boy (uncredited)

Kaylee Dodson as Sack Race Girl (uncredited)

Jasmine Dustin as Trophy Presenter (uncredited)

David D. Espinoza as Audience Member (uncredited)

Eric Feliciano as Academy Awards Audience Member (uncredited)

Miko Hughes as Radio DJ (uncredited)

Dave Johnson as Journalist (uncredited)

Jillian Johnston as Four Leaf's Date (uncredited)

James Lew as Flaming Dragon Compound Person (uncredited)

Lesley Nicole Lewis as Booty Sweat Dancer (uncredited)

Fadhia Carmelle Marcelin as Academy Awards Attendee (uncredited)

Anya Monzikova as Trophy Presenter (uncredited)

Chad Mountain as Agency Assistant (uncredited)

Brittany Perry-Russell as Booty Sweat Girl (uncredited)

Simon Rhee as Flaming Dragon Compound Person (uncredited)

Samantha Sadoff as Farm Girl (uncredited)

Gaku Space as Guerilla Guard (uncredited)

Becca Sweitzer as Go Go Dancer (uncredited)

Kaye Marie Talise as Academy Awards Attendee (uncredited)

Sandra Valladares as Red Carpet Reporter (uncredited)

Julie Van as Academy Awards Attendee (uncredited)

Jobeth Wagner as Academy Awards Attendee (uncredited)

John Garry as Trailer Announcer - The Fatties (voice) (uncredited)

Justin Theroux as UH-1 Huey Gunner (uncredited)