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)