Earth vs. the Flying Saucers

Test space rockets exploding at liftoff and increased reporting of UFO sightings culminate in a direct attempt by alien survivors of a dead, extra-galactic civilization to invade Earth from impervious flying saucers, using ray-weapons of mass destruction.

• 
  Fred F. Sears
• 
  Gene Anderson Jr.

• 
  Hugh Marlowe
  Dr. Russell A. Marvin
• 
  Joan Taylor
  Carol Marvin
• 
  Donald Curtis
  Maj. Huglin
• 
  Morris Ankrum
  Brig. Gen. John Hanley
• 
  Thomas Browne Henry
  Vice Adm. Enright
• 
  Grandon Rhodes
  Gen. Edmunds
• 
  John Zaremba
  Prof. Kanter
• 
  Paul Frees
  Alien (voice)
• 
  Frank Wilcox
  Alfred Cassidy
• 
  Sydney Mason
  Frank the garage man
• 
  Larry J. Blake
  Motorcycle cop
• 
  Bert Stevens
  Air Intelligence Command Officer
• 
  Forbes Murray
  Military Officer at Experiment
• 
  Arthur Tovey
  Officer/Civilian at Military Conference
• 
  Alan Wells
  Major Kimberly
• 
  Nicky Blair
  Military Officer at Experiment (uncredited)
• 
  Jimmy Cross
  Military Messenger (uncredited)
• 
  Jack Deery
  Military Officer (uncredited)
• 
  Charles Evans
  Dr. Alberts (uncredited)
• 
  Raoul Freeman
  Military Official (uncredited)