| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur Roberts | Crew | Editing | Editor |
 Boris Leven | Crew | Art | Art Direction |
Earl Crain Sr. | Crew | Sound | Sound |
Edward G. Boyle | Crew | Art | Set Dresser |
Edward L. Alperson | Crew | Production | Producer |
Gene Hibbs | Crew | Costume & Make-Up | Makeup Artist |
Howard Lydecker | Crew | Visual Effects | Mechanical & Creature Designer |
Irving Block | Crew | Visual Effects | Matte Painter |
Jack Cosgrove | Crew | Visual Effects | Visual Effects, Special Effects |
Jack Rabin | Crew | Visual Effects | Matte Painter |
 John F. Seitz | Crew | Camera | Director of Photography |
John Tucker Battle | Crew | Writing | Story |
Raoul Kraushaar | Crew | Sound | Original Music Composer |
Richard Blake | Crew | Writing | Screenplay |
Ruby Felker | Crew | Costume & Make-Up | Hairstylist |
 William Cameron Menzies | Crew | Directing | Director, Production Design |
Edward L. Alperson Jr. | Crew | Production | Associate Producer |
Leonard Kunody | Crew | Directing | Second Assistant Director |
Ben Chapman | Crew | Production | Production Manager, Assistant Director |
Anatole Robbins | Crew | Costume & Make-Up | Special Effects Makeup Artist |
Mary Yerke | Crew | Directing | Script Supervisor |
 Arthur Franz | Cast | Actor | Dr. Stuart Kelston |
 Barbara Billingsley | Cast | Actress | Kelston's Secretary |
 Bert Freed | Cast | Actor | Police Chief A.C. Barrows |
 Charles Cane | Cast | Actor | Officer Blaine |
 Douglas Kennedy | Cast | Actor | Officer Jackson |
 Fay Baker | Cast | Actress | Mrs. Wilson |
 Frank Wilcox | Cast | Actor | Pentagon Chief of Staff |
Gil Herman | Cast | Major Clary | |
 Helena Carter | Cast | Actress | Dr. Pat Blake, MD |
 Hillary Brooke | Cast | Actress | Mrs. Mary MacLean |
 Janine Perreau | Cast | Actress | Kathy Wilson |
 Jimmy Hunt | Cast | Actor | David Maclean |
 John Eldredge | Cast | Actor | Mr. Turner |
 Leif Erickson | Cast | Actor | Mr. George MacLean |
 Lock Martin | Cast | Actor | Mutant Carrying David to 'Intelligence' |
 Max Wagner | Cast | Actor | Army Sgt. Rinaldi |
 Milburn Stone | Cast | Actor | Army Capt. Roth |
 Morris Ankrum | Cast | Actor | Col. Fielding |
 Peter Brocco | Cast | Actor | Brainard (bit) |
 Richard Deacon | Cast | Actor | MP |
 Robert Shayne | Cast | Actor | Dr. William Wilson |
 Todd Karns | Cast | Actor | Jim the Gas Station Attendant |
 Walter Sande | Cast | Actor | Police Sgt. Mack Finlay |
 William Forrest | Cast | Actor | Col. Mayberry |
 William Phipps | Cast | Actor | Sgt. Baker |
Max Palmer | Cast | Actor | Second Mutant Guarding the "Intelligence" |
Charles Gibb | Cast | Lt. Blair | |
Luce Potter | Cast | The Martian Intelligence | |
| Person | Type | Job | Role(s) |
