Succubus (German: Necronomicon – Geträumte Sünden, lit. 'Necronomicon – Sinful Dreams') is a 1968 West German erotic horror film directed by Jesús Franco and starring Janine Reynaud, Jack Taylor, Adrian Hoven, and Michel Lemoine. It follows Lorna Green, a performer at a Lisbon nightclub who performs fictionalized acts that involve erotically charged sadomasochistic murders. As she begins to suffer violent, surreal nightmares, it is suggested that Lorna may be under mind control by a man who may be Satan incarnate.

Succubus was Franco's first film made entirely outside of Spain. During production, the German backers for the film fell out, leading to the producer contacting Pier A. Caminnecci to finance the film. The film was released in West Germany in April 1968, and was subsequently acquired by American International Pictures, who distributed it in the United States beginning in April 1969.