Paul Massie

Dr. Jekyll / Mr. Hyde

Dawn Addams

Kitty Jekyll

Christopher Lee

Paul Allen

David Kossoff

Dr. Littauer

Norma Marla

Maria

Francis de Wolff

Inspector

Joy Webster

Jenny

Magda Miller

Sphinx Girl (uncredited)

Oliver Reed

Nightclub Bouncer (uncredited)

Helen Goss

Nanny (uncredited)

Arthur Lovegrove

Cabby (uncredited)

Walter Gotell

Heverton - Second Gambler (uncredited)

Percy Cartwright

Coroner (uncredited)

John Bonney

Renfrew (uncredited)

Denis Cleary

Waiter (uncredited)