Stewart Graff
Remy Royce-Graff
Sgt. Lew Slade
Sam Royce
Denise Marshall
Miles Quade
Jody
Dr. Willis Stockle
Dr. James Vance
Rosa Amici
Drunk
Barbara
Sal
Chavez
Bill Cameron
Los Angeles Mayor
Walter Russell
Asst. Caretaker
Corry
Dr. Harvey Johnson
Buck
Ralph
Hank
Carl Leeds
Chief Inspector
Colonel
Sid
Sandy
Pool Player
Dr. Frank Ames
Brawny Foreman
Dam Caretaker
Farmer Mr. Griggs
Las Vegas Man
Technician
Laura
Boy with Radio (uncredited)
Citizen (uncredited)
Restaurant Patron (uncredited)
Pawnbroker's Wife (TV version) (uncredited)
Dam Workman (uncredited)
Young Man on Motorcycle (uncredited)
Woman (uncredited)
Officer Scott (Wilson Plaza) (uncredited)
Earthquake Survivor (uncredited)
Stranger (uncredited)
National Guardsman (uncredited)
Sherriff Merle (uncredited)
LAPD Captain (uncredited)
Tony (Kathie's Husband) (uncredited)
Dr. Vance's Nurse (uncredited)
Office Worker (uncredited)
Hare Krishna (uncredited)
Earthquake Survivor in Wilson Plaza (uncredited)
Man Drinking from Plastic Cup in Wilson Plaza (uncredited)
Blonde Secretary in Royce Building (uncredited)
Bar Cook (uncredited)
Blonde Woman (uncredited)
Sports Car Thief (uncredited)
Man (uncredited)
Doctor (uncredited)
Helicopter Pilot (uncredited)
Seismologist (uncredited)
Man Fleeing Movie Theatre (uncredited)
Man on the Balcony of a Falling House (uncredited)
Policeman (uncredited)
Earthquake Victim (uncredited)
Seismology Graduate Student (uncredited)
Man on Loudspeaker (voice) (uncredited)
Housewife (uncredited)
Police Officer (uncredited)
Pool Player (uncredited)
Emergency Soup Kitchen Worker in Wilson Plaza (uncredited)
Man in Outer Office (uncredited)
Deputy Sherriff (uncredited)
Boy (uncredited)
Jay the Bartender (uncredited)
Kathie (TV version) (uncredited)
Radio Station Technician (uncredited)
Prop Tractor Driver (uncredited)
Opening Narrator (uncredited)
Grocery Store Clerk (uncredited)
Man on the Radio (voice) (uncredited)
Studio Guard (uncredited)
Diver at Hollywood Reservoir (uncredited)
Ambulance Driver (uncredited)
Dam Workman with Blowtorch (uncredited)