Jeff Bridges
Role: Jack F. Prescott
Charles Grodin
Role: Fred S. Wilson
John Randolph
Role: Captain Ross
René Auberjonois
Role: Roy Bagley
Jack O'Halloran
Role: Joe Perko
John Agar
Role: City Official
John Lone
Role: Chinese Cook
Garry Walberg
Role: Army General
Keny Long
Role: Ape Masked Man
Sid Conrad
Role: Petrox Chairman
George S. Whiteman
Role: Army Helicopter Pilot
Wayne Heffley
Role: Air Force General
Todd Baker
Role: Shea Stadium Spectator
Corbin Bernsen
Role: Reporter
Ray Buktenica
Role: Naval Officer
Larry M. Byrd
Role: Excited Fan
Peter Cullen
Role: King Kong (voice)
S.C. Dacy
Role: Newspaper Photographer
James Dunaway
Role: Man in Audience
Ned Gill
Role: Crushed Spectator
Donald F. Glut
Role: Guy in Ampitheater
Walt Gorney
Role: Subway Driver
Shawn McAllister
Role: Police Sergeant
Eve McVeagh
Role: Reporter
Larry Naschel
Role: Victim
Ira S. Rosenstein
Role: Logan
David Roya
Role: Ship's Radio Operator
David Ulmer
Role: Man Running in Terror
Kristephan Warren-Stevens
Role: Kid with Afro on Bleachers
Rick Baker
Role: King Kong
Dennis Fimple
Role: Sunfish
Harrison Ressler
Role: Photographer (uncredited)