Charlton Heston
Stewart Graff
Ava Gardner
Remy Royce-Graff
George Kennedy
Sgt. Lew Slade
Lorne Greene
Sam Royce
Geneviève Bujold
Denise Marshall
Richard Roundtree
Miles Quade
Marjoe Gortner
Jody
Barry Sullivan
Dr. Willis Stockle
Lloyd Nolan
Dr. James Vance
Victoria Principal
Rosa Amici
Walter Matthau
Drunk
Monica Lewis
Barbara
Gabriel Dell
Sal
Pedro Armendáriz Jr.
Chavez
Lloyd Gough
Bill Cameron
John Randolph
Los Angeles Mayor
Kip Niven
Walter Russell
Scott Hylands
Asst. Caretaker
![Tiger Williams]()
Tiger Williams
Corry
Donald Moffat
Dr. Harvey Johnson
Jesse Vint
Buck
Alan Vint
Ralph
![Lionel Johnston]()
Lionel Johnston
Hank
John Elerick
Carl Leeds
John S. Ragin
Chief Inspector
George Murdock
Colonel
![Don Mantooth]()
Don Mantooth
Sid
![Michael Richardson]()
Michael Richardson
Sandy
Alex Brown
Pool Player
Bob Cunningham
Dr. Frank Ames
John Dennis
Brawny Foreman
Gene Dynarski
Dam Caretaker
![Bob Gravage]()
Bob Gravage
Farmer Mr. Griggs
H.B. Haggerty
Pool Player
Tim Herbert
Las Vegas Man
![Dave Morick]()
Dave Morick
Technician
![Ines Pedroza]()
Ines Pedroza
Laura
Josh Albee
Boy with Radio (uncredited)
![Benjie Bancroft]()
Benjie Bancroft
Citizen (uncredited)
![Buzz Barbee]()
Buzz Barbee
Restaurant Patron (uncredited)
![Joan Blair]()
Joan Blair
Pawnbroker's Wife (TV version) (uncredited)
![Hal Bokar]()
Hal Bokar
Dam Workman (uncredited)
Reb Brown
Young Man on Motorcycle (uncredited)
![Vivian Brown]()
Vivian Brown
Woman (uncredited)
![Ian Bruce]()
Ian Bruce
Officer Scott (Wilson Plaza) (uncredited)
Polly Burson
Earthquake Survivor (uncredited)
![William H. Burton Jr.]()
William H. Burton Jr.
Stranger (uncredited)
Ric Carrott
National Guardsman (uncredited)
David S. Cass Sr.
Sherriff Merle (uncredited)
Lonny Chapman
LAPD Captain (uncredited)
Sam Chew Jr.
Tony (Kathie's Husband) (uncredited)
![Shannon Christie]()
Shannon Christie
Dr. Vance's Nurse (uncredited)
Erik Cord
Office Worker (uncredited)
![Caitanya Dasi]()
Caitanya Dasi
Hare Krishna (uncredited)
![Cinmayi Devi]()
Cinmayi Devi
Hare Krishna (uncredited)
![Ken DuMain]()
Ken DuMain
Earthquake Survivor in Wilson Plaza (uncredited)
![Patty Elder]()
Patty Elder
Blonde Secretary in Royce Building (uncredited)
Kenny Endoso
Bar Cook (uncredited)
Jeannie Epper
Blonde Woman (uncredited)
![Dotty Ertel]()
Dotty Ertel
Earthquake Survivor (uncredited)
![Bobby Ferro]()
Bobby Ferro
Sports Car Thief (uncredited)
Bruce M. Fischer
Man (uncredited)
![Sig Frohlich]()
Sig Frohlich
Doctor (uncredited)
![James W. Gavin]()
James W. Gavin
Helicopter Pilot (uncredited)
Ernest Harada
Seismologist (uncredited)
Jerry Hardin
Man (uncredited)
Bob Harks
Man Fleeing Movie Theatre (uncredited)
![Orwin C. Harvey]()
Orwin C. Harvey
Man on the Balcony of a Falling House (uncredited)
![Lars Hensen]()
Lars Hensen
Citizen (uncredited)
Diana Herbert
Woman (uncredited)
Bert Kramer
Policeman (uncredited)
Paul LeClair
National Guardsman (uncredited)
Karl Lukas
Man (uncredited)
![Ernesto Molinari]()
Ernesto Molinari
Citizen (uncredited)
![Stevie Myers]()
Stevie Myers
Earthquake Victim (uncredited)
Jimmy Nickerson
Seismology Graduate Student (uncredited)
Stuart Nisbet
Man on Loudspeaker (voice) (uncredited)
Frances Osborne
Housewife (uncredited)
Grant Owens
Police Officer (uncredited)
Charlie Picerni
Pool Player (uncredited)
![Tony Regan]()
Tony Regan
Man Fleeing Movie Theatre (uncredited)
Leoda Richards
Emergency Soup Kitchen Worker in Wilson Plaza (uncredited)
![Clark Ross]()
Clark Ross
Man in Outer Office (uncredited)
George Sawaya
Deputy Sherriff (uncredited)
![Mark Sawtelle]()
Mark Sawtelle
Boy (uncredited)
![Fred Scheiwiller]()
Fred Scheiwiller
Jay the Bartender (uncredited)
Debralee Scott
Kathie (TV version) (uncredited)
Dean Smith
Pool Player (uncredited)
Eddie Smith
Citizen (uncredited)
![Norman Stevans]()
Norman Stevans
Radio Station Technician (uncredited)
Arthur Tovey
Citizen (uncredited)
![John Tuell]()
John Tuell
Prop Tractor Driver (uncredited)
Dick Tufeld
Opening Narrator (uncredited)
![Kitty Vallacher]()
Kitty Vallacher
Grocery Store Clerk (uncredited)
Keith Walker
Man on the Radio (voice) (uncredited)
Sandy Ward
Studio Guard (uncredited)
![Rick Warick]()
Rick Warick
Office Worker (uncredited)
Dick Warlock
Diver at Hollywood Reservoir (uncredited)
![William Whitaker]()
William Whitaker
Ambulance Driver (uncredited)
Don Wilbanks
Dam Workman with Blowtorch (uncredited)
![Forrest Wood]()
Forrest Wood
Man (uncredited)
![Clint Young]()
Clint Young
Dam Workman (uncredited)
