Józef Pluta (March 16, 1932 – October 29, 1979), known as The Vampire of Marianowo (Polish: Wampir z Marianowa), was a Polish serial killer and mass murderer who killed at least six people across Greater Poland during a two-month killing spree in 1979, committed shortly after escaping a mental institution where he was serving as 12-year sentence for murder. A large manhunt was initiated for his capture, resulting in his death under disputed circumstances.