Hanns Heinz Ewers was a German actor, poet, philosopher, and writer of short stories and novels. While he wrote on a wide range of subjects, he is now known mainly for his works of horror, particularly his trilogy of novels about the adventures of Frank Braun, a character modeled on himself. The best known of these is Alraune (1911).

Alraune is a novel by German novelist Hanns Heinz Ewers published in 1911. It is also the name of the female lead character. The book originally featured illustrations by Ilna Ewers-Wunderwald.