The Bouncing Ball Killer, also known as the Bouncing Ball Slayer, the Bouncing Ball Strangler, and the Rubber Ball Strangler, was an unidentified American serial killer believed to have murdered at least six women in the Los Angeles area between May 1959 and June 1960. During the investigation, a multitude of suspects were considered, and although some were arrested and one reportedly confessed to the crimes, the case remains officially unsolved.