character - David Allen

character - Jacob

character - Waterbury

character - John Bedlow

character - Lt. Gen. Ira Eaker USAAF

character - Father Kerry

character - Dr. George Hyatt

character - Right Door Knocker (voice)

character - Newscaster

character - Mayor (as David Healey)

character - Jack Mervyn

character - Jack Mervyn

character - Mr. Danvers

character - Dr. John Watson

character - Lunar Controller / Frazer (voice)

character - Shane Weston / Russian Commander / Base 513 Controller / Kramer / Bates / Commander Kovac (voice)

character - Peter

character - Juror

character - 1st General

character - (voice) (credit only)

character - Jack Harrison

character - Auctioneer

character - Hansen

character - Senator Harbin

character - Pfc Foster

character - Theodore Roosevelt

character - Sam Bundler

character - Maj. Winters

character - Cavendish

character - Donat

character - Radio Announcer (voice) (uncredited)

character - Houston

character - Tourist

character - David Laver

character - Jason

character - Frank Mancha

character - Phelan

character - Braden

character - Vandenburg Launch Director (uncredited)

character - Colonel Adler

character - Raymond Pelley

character - Joe Franklin

character - Clergyman

character - Dreisenberg Ambassador (voice)

character - Shaw / Nielson / 2nd Technician (North Africa) / 1st Technician (Burgossa) / 4th Technician (Port Trennick) (voice)

character - Dr Groot (voice)

character - Mark Slater (voice)

character - Sakov / Nurse (voice)

character - Ramos

character - Shane Weston

character - Chicago Theatre Manager

character - Jones

character - David

character - Geiger Operator / Guard Voice 2 (voice)

character - Commodore Goddard (voice)

character - Kruger (voice)

character - Lunar Controller (voice)

character - General Cope / Major Brooks (voice)

character - Frazer (voice)

character - Jason Smith (voice)

character - Dr. Mitchell (voice)

character - Dr. Conrad (voice)

character - General Rebus (voice)

character - President Roberts (voice)

character - Major Moran (voice)

character - Major Stone (voice)

character - Colgan / Frazer / Commodore Goddard (voice)

character - Houston Radar Operator (uncredited)

character - Halstead

character - Radio Announcer

character - Hilton Bass

character - Newsreel Commentator

character - Hal Ward