Wilhelmina Beatrice Rahner (January 22, 1876 – February 11, 1943), known as Bess, was the stage assistant and wife of Harry Houdini; they had no children.

In "Prick Up Your Ears", she appears in a cutaway with her husband as they prepare to go to their friends the Petersons for games of bridge. When Harry tries to get out of the commitment, she finds him hiding in a trunk in the closet.