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)

Walter Gotell

Heverton - Second Gambler (uncredited)

John Bonney

Renfrew (uncredited)

Fred Stone

Cabinet Minister (uncredited)

Mackenzie Ward

Business Man (uncredited)

Rodney Burke

Young Blood (uncredited)