Staf Van Eyken (born April 21, 1951 in Bonheiden) is a Belgian serial killer who strangled three women between October 1971 and March 1972 in Mechelen and Bonheiden.
Because he liked to bite his victims, he got the nickname The Vampire of Muizen.
In 1974, he was sentenced to death by an Antwerp cour d'assises, which was automatically converted to life imprisonment.