布莱恩·唐莱维
Brian Donlevy
饰：Prof. Bernard Quatermass
杰克·华纳
Jack Warner
饰：Insp. Lomax
玛吉娅·迪安
Margia Dean
饰：Mrs. Judith Carroon
索拉·赫德
Thora Hird
饰：Rosemary 'Rosie' Elizabeth Rigly
戈登·杰克逊
Gordon Jackson
饰：BBC TV producer
David King-Wood
饰：Dr. Gordon Briscoe (Quatermass' associate)
Harold Lang
饰：Christie (man who helps Victor escape)
莱昂内尔·杰弗里斯
Lionel Charles Jeffries
饰：Blake (Ministry of Defense)
山姆·基德
Sam Kydd
饰：Police sergeant questioning Rosie
理查德·沃兹沃思
Richard Wordsworth
饰：Victor Carroon (spaceship crew member)
Margaret Anderson
Margaret Anderson
饰：Maggie (uncredited)
珍·爱舍
Jane Asher
饰：Little girl (uncredited)
Harry Brunning
Harry Brunning
饰：Night porter (uncredited)
Eric Corrie
饰：Maggie's boyfriend (uncredited)
Gron Davies
饰：Charles Green (spaceship crew member) (uncredited)
瓦西里·迪格纳穆
Basil Dignam
饰：Sir Lionel Dean (uncredited)
James Drake
James Drake
饰：Sound engineer (uncredited)
莫里格莱辛
Mollie Glessing
饰：Mother at zoo (uncredited)
Michael Godfrey
饰：Crash site fireman (uncredited)
Donald Gray
饰：TV announcer (uncredited)
Arthur Gross
饰：TV floor director (uncredited)
Ernest Hare
饰：Crash site fire chief (uncredited)
Fred Johnson
饰：Inspector (uncredited)
莫里斯·考夫曼
Maurice Kaufmann
饰：Marsh (Quatermass' assistant) (uncredited)
Henry B. Longhurst
饰：George (Maggie's father) (uncredited)
阿瑟·洛夫格罗夫
Arthur Lovegrove
饰：Sgt. Bromley (uncredited)
Barry Lowe
饰：Tucker (night nurse) (uncredited)
Mayne Lynton
饰：Zoo superintendent (uncredited)
Bartlett Mullins
饰：Zookeeper (uncredited)
弗兰克·菲利普斯
Frank Phillips
饰：BBC announcer (uncredited)
George Roderick
George Roderick
饰：Local policeman (uncredited)
John Stirling
John Stirling
饰：Major at crash site (uncredited)
玛丽安·斯通
Marianne Stone
饰：Central Clinic nurse (uncredited)
Toke Antony Townley
饰：The chemist (uncredited)
斯坦利·范比尔斯
Stanley Van Beers
饰：Dr. Ludwig Reichenheim (spaceship crew member) (uncredited)
Jane Aird
Jane Aird
饰：Mrs. Lomax (uncredited)
Edward Dane
Edward Dane
饰：Station policeman (uncredited)
Betty Impey
Betty Impey
饰：Central Clinic nurse (uncredited)
John Kerr
John Kerr
饰：Film lab technician (uncredited)
John Wynn
John Wynn
饰：Det. Sgt. Best (uncredited)