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