| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anthony Nelson Keys | Crew | Production | Producer |
Arthur Grant | Crew | Camera | Director of Photography |
 Bernard Robinson | Crew | Art | Supervising Art Director |
Bert Batt | Crew | Directing | Assistant Director |
Ian Lewis | Crew | Production | Production Manager |
Irene Lamb | Crew | Production | Casting |
James Needs | Crew | Editing | Supervising Film Editor |
Kenneth Ryan | Crew | Art | Art Direction |
Les Bowie | Crew | Crew | Special Effects |
Moray Grant | Crew | Camera | Camera Operator |
 Nigel Kneale | Crew | Writing | Screenplay, Original Story |
Pearl Tipaldi | Crew | Costume & Make-Up | Hairstylist |
Rosemary Burrows | Crew | Costume & Make-Up | Wardrobe Supervisor |
Roy Hyde | Crew | Sound | Sound Editor |
 Roy Ward Baker | Crew | Directing | Director |
Spencer Reeve | Crew | Editing | Editor |
 Tristram Cary | Crew | Sound | Original Music Composer |
Doreen Dearnaley | Crew | Directing | Continuity |
Sash Fisher | Crew | Sound | Sound Recordist |
Philip Martell | Crew | Sound | Music Supervisor |
Michael Morris | Crew | Costume & Make-Up | Makeup Artist |
 Andrew Keir | Cast | Actor | Prof. Bernard Quatermass |
 Barbara Shelley | Cast | Actress | Barbara Judd |
 Bee Duffell | Cast | Actress | Miss Dobson |
 Brian Peck | Cast | Actor | Technical Officer |
 Bryan Marshall | Cast | Actor | Captain Potter |
Charles Lamb | Cast | Actor | Newsvendor |
 David Savile | Cast | Actor | Army Officer |
 Duncan Lamont | Cast | Actor | Sladden |
 Edwin Richfield | Cast | Actor | Minister |
 Gareth Thomas | Cast | Actor | Workman (uncredited) |
 Grant Taylor | Cast | Actor | Police Sergeant Ellis |
Hugh Futcher | Cast | Actor | Sapper West |
 Hugh Manning | Cast | Actor | Pub Customer |
 Hugh Morton | Cast | Actor | Elderly Journalist |
 James Culliford | Cast | Actor | Corporal Gibson |
 James Donald | Cast | Actor | Dr. Mathew Roney |
 Julian Glover | Cast | Actor | Colonel Breen |
 June Ellis | Cast | Actress | Blonde |
 Keith Marsh | Cast | Actor | Johnson |
Maurice Good | Cast | Actor | Sergeant Cleghorn |
 Michael Poole | Cast | Actor | Older Workman (uncredited) |
 Noel Howlett | Cast | Actor | Abbey Librarian |
 Peter Copley | Cast | Actor | Howell |
 Roger Avon | Cast | Actor | Electrician |
 Sheila Steafel | Cast | Actress | Journalist |
 Thomas Heathcote | Cast | Actor | Vicar |
William Ellis | Cast | Actor | Journalist |
John Graham | Cast | Actor | Inspector |
 Robert Morris | Cast | Actor | Jerry Watson |
Albert Shepherd | Cast | Actor | Loader (uncredited) |
| Person | Type | Job | Role(s) |
