Jacobus Dirk (Koos) Hertogs (The Hague, 16 December 1949 – 's-Hertogenbosch, 19 July 2015) was a convicted Dutch serial killer. He was convicted of a total of three murders.

Ciro Annunchiarico (in Italian: Ciro Annicchiarico) (also known as: Papa Ciro) (16 December 1775 in Grottaglie – 8 February 1817 in Francavilla Fontana) was an Italian cult leader.