Leszek Pękalski, a.k.a. Vampire of Bytów (born 12 February 1966 in Osieki near Bytów, Poland) is a Polish serial killer. He is believed to have killed at least 17 people between 1984 and 1992. At some stage of criminal procedures he admitted to having killed as many as 80 people, but he later retracted his confessions.
Nevertheless, due to improper evidence collection, he was convicted for only one murder. As of 2007, he is serving a 25-year term in prison and is to be released in 2017.