Ralph Bates

Victor Frankenstein

Kate O'Mara

Alys

Veronica Carlson

Elizabeth Heiss

Dennis Price

The Graverobber

David Prowse

The Monster

Jon Finch

Lt. Henry Becker

Bernard Archard

Prof. Heiss

Graham James

Kassner

James Hayter

Bailiff

Joan Rice

Graverobber's wife

Stephen Turner

Stephan

Neil Wilson

Schoolmaster

James Cossins

Dean

Glenys O'Brien

Maggie

Geoffrey Lumsden

Instructor (uncredited)