- Gene Barry
- Dr. Clayton Forrester
- Ann Robinson
- Sylvia Van Buren
- Les Tremayne
- Maj. Gen. Mann
- Robert Cornthwaite
- Dr. Pryor
- Sandro Giglio
- Dr. Bilderbeck
- Lewis Martin
- Pastor Dr. Matthew Collins
- Houseley Stevenson Jr.
- Gen. Mann's Aide
- Paul Frees
- Second Radio Reporter / Opening Announcer
- William Phipps
- Wash Perry
- Vernon Rich
- Col. Ralph Heffner
- Henry Brandon
- Cop at Crash Site
- Jack Kruschen
- Salvatore
- Cedric Hardwicke
- Commentary
- Peter Adams
- Pine Summit Fire Watcher
- Eric Alden
- Man
- Hugh Allen
- Brigadier General
- Ruth Barnell
- Mother
- Edgar Barrier
- Prof. McPherson
- Russ Bender
- Dr. Carmichael
- Paul Birch
- Alonzo Hogue
- Oscar Blank
- Man in Church
- Nick Borgani
- Man in Church
- Hazel Boyne
- Screaming Woman
- Chet Brandenburg
- Man in Church
- George Bruggeman
- Soldier
- Nora Bush
- Woman in Church
- Tony Butala
- Boy in Final Church
- Mushy Callahan
- Burning Soldier at Pit
- Dick Cherney
- Looter
- Ann Codee
- Dr. Duprey
- Edward Colmans
- Spanish Priest
- James Conaty
- Man at Pacific Institute of Science and Technology
- Russ Conway
- Rev. Bethany
- Martin Coulter
- Marine Sergeant
- Vittorio Cramer
- First Radio Reporter
- Pierre Cressoy
- Frenchman
- Oliver Cross
- Scientist
- Jane Crowley
- Woman in Church
- Jim Davies
- Marine Commanding Officer
- Helen Dickson
- Woman in Church
- Ralph Dumke
- Buck Monahan
- Jimmie Dundee
- Civil Defense Official
- Al Ferguson
- Police Chief
- Dick Fortune
- Marine Captain
- Alex Frazer
- Dr. James
- Frank Freeman Jr.
- Bum #2 Listening to Radio
- Slim Gaut
- Radio Listener
- Charles Gemora
- Martian
- Ned Glass
- Well-Dressed Looter
- Jack Gordon
- Man in Church
- Fred Graham
- Looter
- Joe Gray
- Looter
- Herman Hack
- Worker Listening to Radio
- Nancy Hale
- Young Wife
- Virginia Hall
- Girl
- Ted Hecht
- KGEB Reporter
- Douglas Henderson
- Staff Sergeant
- Gertrude Hoffman
- Elderly News Vendor
- Tex Holden
- Man in Church
- Jimmie Horan
- Party Guest
- Patricia Iannone
- Girl
- Jerry James
- Reporter
- Michael Jeffers
- Worker Listening to Radio
- Dick Johnstone
- Man in Church
- Carolyn Jones
- Blonde Party Guest
- Don Kohler
- Colonel
- Frank Kreig
- Fiddler Hawkins
- Ivan Lebedeff
- Dr. Gratzman
- Freeman Lusk
- Secretary of Defense
- Herbert Lytton
- Chief of Staff
- Wilbur Mack
- Official
- George Magrill
- Traffic Cop
- Mike Mahoney
- Townsman
- John Mansfield
- Man
- Joel Marston
- Military Policeman in Jeep
- Sydney Mason
- Fire Chief, Crew #3
- John Maxwell
- Doctor
- Mathew McCue
- Man in Church
- David McMahon
- Minister, First Church
- William Meader
- P.E. Official
- Lee Miller
- Reporter
- Ralph Montgomery
- Los Angeles Red Cross Official
- Alvy Moore
- Zippy
- Rex Moore
- Bum
- Bob Morgan
- Injured Civil Defense Worker
- Charles Morton
- Worker Listening to Radio
- George Nardelli
- Military Officer
- Stanley Orr
- Marine Major
- George Pal
- Bum #1 Listening to Radio
- Walter Richards
- Reporter
- Robert Rockwell
- Forest Ranger at Crash Site
- Walter Sande
- Sheriff Bogany
- James Seay
- Air Force Bomber Pilot
- Allen D. Sewall
- Man in Church
- Lucile Sewall
- Woman in Church
- Cora Shannon
- Old Woman
- David Sharpe
- Looter
- Teru Shimada
- Japanese Diplomat
- Reginald Lal Singh
- Military Officer
- Bobby Somers
- Deputy at Crash Site
- Bert Stevens
- Man in Church
- Charles Stewart
- Marine Captain
- Jack Stoney
- Looter
- Gus Taillon
- Elderly Man
- Morton C. Thompson
- Reporter
- Arthur Tovey
- Party Guest
- Dale Van Sickel
- Looter
- Dorothy Vernon
- Elderly Woman at Square Dance
- Edward Wahrman
- Cameraman
- Anthony Warde
- Military Police Driver
- Bob Whitney
- Military Officer
- Chalky Williams
- Worker Listening to Radio
- Waldon Williams
- Boy
- Bud Wolfe
- Rescuing Civil Defense Worker
- Fred Zendar
- Marine Lieutenant
