George Nardelli Military Officer (uncredited)
Edward Colmans Spanish Priest (uncredited)
Wally Westmore Makeup Supervisor
Bobby Somers Deputy at Crash Site (uncredited), Stunts
Vernon Rich Ralph Heffner
W. Wallace Kelley Visual Effects
Ivan Lebedeff Dr. Gratzman (uncredited)
Frank Kreig Fiddler Hawkins (uncredited)
Ted Hecht KGEB Reporter (uncredited)
Chalky Williams Worker Listening to Radio (uncredited), Stunts
Lucile Sewall Woman in Church (uncredited)
Gertrude Hoffmann Elderly News Vendor (uncredited)
Jimmie Horan Party Guest (uncredited)
Gene Lauritzen Construction Coordinator
Walter Oberst Sound Effects
Jerry James Reporter (uncredited)
Virginia Hall Girl (uncredited)
Emile Kuri Set Decoration
Sydney Mason Fire Chief, Crew #3 (uncredited)
George Magrill Traffic Cop (uncredited), Stunts
James Conaty Man at Pacific Institute of Science and Technology (uncredited)
David McMahon Minister, First Church (uncredited)
George Parrish Orchestrator
Barré Lyndon Screenplay
Al Ferguson Police Chief (uncredited)
Nancy Hale Young Wife (uncredited)
Oscar Blank Man in Church (uncredited)
Jane Crowley Woman in Church (uncredited)
Jimmie Dundee Civil Defense Official (uncredited), Stunts
Bob Morgan Injured Civil Defense Worker (uncredited), Stunts
Ralph Montgomery Los Angeles Red Cross Official (uncredited)
Joe Gray Looter (uncredited), Stunts
Gene Garvin Sound Recordist
Irmin Roberts Visual Effects
Alex Frazer Dr. James (uncredited)
Everett Douglas Editor
Don Kohler Colonel (uncredited)
Slim Gaut Radio Listener (uncredited), Stunts
Freeman Lusk Secretary of Defense (uncredited)
Diana Gemora Costumer
Bob Whitney Military Officer (uncredited)
Vittorio Cramer First Radio Reporter (uncredited)
Oliver Cross Scientist (uncredited)
Mushy Callahan Burning Soldier at Pit (uncredited), Stunts
Tony Butala Boy in Final Church (uncredited)
David Sharpe Looter (uncredited), Stunts
Gus Taillon Elderly Man (uncredited)
John Mansfield Man (uncredited)
Hazel Boyne Screaming Woman (uncredited)
Cliff Shirpser Visual Effects Camera
Albert Nozaki Set Decoration, Art Direction
Gordon Jennings Visual Effects
Ken Strickfaden Special Effects
Houseley Stevenson Jr. General Mann's Aide
Frank Caffey Production Manager
Harry Lindgren Sound Recordist
Morton C. Thompson Reporter (uncredited)
Lee Vasque Props
Howard Beals Sound Effects
Murray Young Key Grip
Patricia Iannone Girl (uncredited)
Stanley Orr Marine Major (uncredited)
Dick Fortune Marine Captain (uncredited)
Monroe W. Burbank Color Grading
Walter Richards Reporter (uncredited)
Reginald Lal Singh Military Officer (uncredited)
Chesley Bonestell Technical Advisor, Painter
Gordon Cole Property Master
Barney Wolff Special Effects
Bob Springfield Special Effects
Soldier Graham Gaffer
Ruth Barnell Mother (uncredited)