Ralph Bates as Victor Frankenstein

Kate O'Mara as Alys

Veronica Carlson as Elizabeth Heiss

Jon Finch as Lt. Henry Becker

Dennis Price as The Graverobber

Graham James as Kassner

Bernard Archard as Prof. Heiss

James Hayter as Bailiff

Joan Rice as Graverobber's wife

Stephen Turner as Stephan

Neil Wilson as Schoolmaster (uncredited)

James Cossins as Dean

Glenys O'Brien as Maggie

Geoffrey Lumsden as Instructor (uncredited)

Chris Lethbridge-Baker as Priest (uncredited)

Terry Duggan as First Bandit (uncredited)

George Belbin as Baron Frankenstein (uncredited)

Hal Jeayes as Woodsman (uncredited)

Carol Jeayes as Woodsman's Daughter (uncredited)

Michael Goldie as Workman (uncredited)

David Prowse as The Monster