Sal Mineo
Dr. Milo
Albert Salmi
E-1
Jason Evers
E-2
John Randolph
Committee Chairman
Harry Lauter
General Winthrop
M. Emmet Walsh
Aide
Roy Glenn
Lawyer (as Roy E. Glenn Sr.)
Peter Forster
Cardinal
Norman Burton
Army Officer
William Woodson
Naval Officer
Tom Lowell
Orderly
Gene Whittington
Marine Captain
Donald Elson
Curator
Bill Bonds
TV Newscaster
Army Archerd
Referee
James Bacon
General Faulkner
Ricardo Montalban
Armando
John Alderman
Marine Corporal (uncredited)
Alan Baxter
General (uncredited)
Jack Berle
Secretary of State (uncredited)
Paul Bradley
Official at Briefing (uncredited)
Karl Bruck
German Newscaster (uncredited)
Jeff Burton
Dodge (archive footage) (uncredited)
Sam Chew Jr.
Undetermined (uncredited)
Robert Cole
Reporter (uncredited)
Walker Edmiston
Talking Baby Chimp (uncredited) (voice)
James Franciscus
Brent (archive footage) (uncredited)
Sig Frohlich
Spectator (uncredited)
James W. Gavin
Helicopter Pilot (uncredited)
George Golden
Official at Briefing (uncredited)
James Gonzalez
Official at Briefing (uncredited)
Joe Gray
Bodyguard (uncredited)
Robert Gunner
Landon (archive footage) (uncredited)
Bob Harks
Aide (uncredited)
Linda Harrison
Nova (archive footage) (uncredited)
Elizabeth Harrower
Reporter at Hotel (uncredited)
Robert Hitchcock
Reporter (uncredited)
Shep Houghton
Bystander (uncredited)
Joseph La Cava
Waiter (uncredited)
Robert Nichols
Reporter (uncredited)
Ron Pinkard
Undetermined (uncredited)
Janos Prohaska
Heloise (uncredited)
Tony Regan
Reporter at Hotel (uncredited)
Stephen Roberts
Gen. Brody (uncredited)
Hank Robinson
Reporter (uncredited)
James B. Sikking
Control Room Officer (uncredited)
Jack Slate
Reporter (uncredited)
Arthur Tovey
Official at Briefing (uncredited)
William Tregoe
Hotel Receptionist (uncredited)