Trailer
Cast
Alan Vint
Ralph
Jeannie Epper
Blonde Woman (uncredited)
Debralee Scott
Kathie (TV version) (uncredited)
Barry Sullivan
Dr. Willis Stockle
Kip Niven
Walter Russell
Bert Kramer
Policeman (uncredited)
Lorne Greene
Sam Royce
Lloyd Nolan
Dr. James Vance
Walter Matthau
Drunk
Kenny Endoso
Bar Cook (uncredited)
Charlton Heston
Stewart Graff
John S. Ragin
Chief Inspector
Grant Owens
Police Officer (uncredited)
Arthur Tovey
Citizen (uncredited)
Jesse Vint
Buck
Bob Cunningham
Dr. Frank Ames
Richard Roundtree
Miles Quade
Marjoe Gortner
Jody
Victoria Principal
Rosa Amici
Monica Lewis
Barbara
Gabriel Dell
Sal
Lloyd Gough
Bill Cameron
Erik Cord
Office Worker (uncredited)
Ernest Harada
Seismologist (uncredited)
Paul LeClair
National Guardsman (uncredited)
Karl Lukas
Man (uncredited)
Stuart Nisbet
Man on Loudspeaker (voice) (uncredited)
Scott Hylands
Asst. Caretaker
Alex Brown
Pool Player
Tim Herbert
Las Vegas Man
Dean Smith
Pool Player (uncredited)
Dick Tufeld
Opening Narrator (uncredited)
Geneviève Bujold
Denise Marshall
Donald Moffat
Dr. Harvey Johnson
Diana Herbert
Woman (uncredited)
Leoda Richards
Emergency Soup Kitchen Worker in Wilson Plaza (uncredited)
George Kennedy
Sgt. Lew Slade
Pedro Armendáriz Jr.
Chavez
John Dennis
Brawny Foreman
David S. Cass Sr.
Sherriff Merle (uncredited)
Frances Osborne
Housewife (uncredited)
George Sawaya
Deputy Sherriff (uncredited)
Don Wilbanks
Dam Workman with Blowtorch (uncredited)
Polly Burson
Earthquake Survivor (uncredited)
George Murdock
Colonel
Gene Dynarski
Dam Caretaker
Reb Brown
Young Man on Motorcycle (uncredited)
Jimmy Nickerson
Seismology Graduate Student (uncredited)
John Elerick
Carl Leeds
H.B. Haggerty
Pool Player
Josh Albee
Boy with Radio (uncredited)
Jerry Hardin
Man (uncredited)
Ava Gardner
Remy Royce-Graff
Charlie Picerni
Pool Player (uncredited)
Eddie Smith
Citizen (uncredited)
Keith Walker
Man on the Radio (voice) (uncredited)
John Randolph
Los Angeles Mayor
Ric Carrott
National Guardsman (uncredited)
Lonny Chapman
LAPD Captain (uncredited)
Sam Chew Jr.
Tony (Kathie's Husband) (uncredited)
Bruce M. Fischer
Man (uncredited)
Bob Harks
Man Fleeing Movie Theatre (uncredited)
Sandy Ward
Studio Guard (uncredited)
Dick Warlock
Diver at Hollywood Reservoir (uncredited)