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