More to be added
- Al-Tourbini / Ramadan Abdel Rehim Mansour (1980-2010) / Egypt / 32 murders
- Aunty Carrie / Caroline Grills (1888-1960) / Australia / 4 murders
- Backpacker Killer / Ivan Milat (1944-) / Australia / 7 murders
- Beast / Luis Garavito (1957-) / Colombia / 138-400
- Beast of British Columbia / Clifford Olson (1940-2011) / Canada / 11 murders
- Beast of the Bastille / Guy Georges (1962-) / France / 7 murders
- Berrima Axe Murderer / John Lynch (1813-1842) / Australia / 10 murders
- Black Widow / Elfriede Blauensteiner (1931-2003) / Austria / 3 murders
- Black Widow of Richmond / Martha Needle (1863-1894) / Australia / 5 murders
- Bluebeard of Gambais / Henri Désiré Landru (1869-1922) / France / 11 murders
- Boozing Barber / Gilbert Paul Jordan (1931-2006) / Canada / 8-10 murders
- Brownout Strangler / Eddie Leonski (1917-1942) / Australia / 3 murders
- Cannibal Killer / Zhang Yongming (1956-2013) / China / 11 murders
- Captain Valery / Marcel Petiot (1897-1946) / France / 27-63 murders
- Caruga of Zagorje / Vinko Pintaric (1941-1991) / Croatia / 5 murders
- Chinese Jack the Ripper / Gao Chengyong (1964-) / China / 11 murders
- Criminal Backpacker / Francis Heaulme (1959-) / France / Several murders
- Death Angel / Robledo Puch (1952-) / Argentina / 11 murders
- Father Bluebeard / András Pándy (1927-2013) / Belgium / 6-14 murders
- French Ripper / Joseph Vacher (1869-1898) / France / 11-27 murders
- Granny Killer / John Wayne Glover (1932-2005) / Australia / 6-13 murders
- Jack the Writer / Jack Unterweger (1950-1994) / Austria / 10-12 murders
- Killer Handyman / William Patrick Fyfe (1955-) / Canada / 5-9 murders
- Killer of the Trains / Sid Ahmed Rezala (1979-2000) / France / 3 murders
- Killer Petey / Pedro Rodrigues Filho (1954-) / Brazil / 71-100 murders
- Lady Killer / John Martin Crawford (1962-) / Canada / 4+ murders
- Lainz Angels of Death / Maria Gruber (1964-), Irene Leidolf (1962-), Stephanija Meyer (1940-) & Waltraud Wagner (1960-) / Austria / 49-200 murders
- London Chambermaid Slayer / Gerald Thomas Archer (1932-1995) / Canada / 3 murders
- Macrotous Runt / Cayetano Santos Godino (1896-1944) / Argentina / 6 murders
- Mad Bumper / Yves Trudeau (1946-2008) / Canada / 43 murders
- Monster Killer / Yang Xinhai (1968-2004) / China / 67 murders
- Monster of Machala / Gilberto Chamba (1961-) / Ecuador / 9 murders
- Monster of Montmartre / Thierry Paulin (1963-1989) / France / 18-21 murders
- Monster of Pont-Rouge / Léopold Dion (1920-1972) / Canada / 4 murders
- Monster of the Andes / Pedro López (1948-) / Colombia / 110-300 murders
- Monster of the Cane Fields / Manuel Octavio Bermúdez (1961-) / Colombia / 21-50 murders
- Monster of the Miramichi / Allan Legere (1948-) / Canada / 5 murders
- Night Caller / Eric Edgar Cooke (1931-1964) / Australia / 8 murders
- Nurse of Death / Edson Izidoro Guimarães (1957-) / Brazil / 4-131 murders
- Ogre of the Ardennes / Michel Fourniret (1942-) / France / 7-10 murders
- Ogress / Jeanne Weber (1874-1918) / France / 6 murders
- Park Maniac / Francisco de Assis Pereira (1967-) / Brazil / 11 murders
- Pig Farmer Killer / Robert Pickton (1949-) / Canada / 6-49 murders
- Psychopath from Alto Hospico / Julio Pérez Silva (1963-) / Chile / 14 murders
- Rockhampton Rapist / Leonard Fraser (1951-2007) / Australia / 4-7 murders
- Sadist of El Charquito / Daniel Camargo Barbosa (1930-1994) / Colombia / 72-150 murders
- Scarborough Rapist / Paul Bernardo (1964-) / Canada / 3-4 murders
- School-girl Strangler / Arnold Sodeman (1899-1936) / Australia / 4 murders
- Sydney Mutilator / William MacDonald (1924-2015) / Australia / 5 murders
- Terror of Moravia / Martin Lecián (1900-1927) / Czech Republic / 4 murders
- Truro Murderers / Christopher Worrell (1954-1977) & James Miller (1940-2008) / Australia / 7 murders
- Vampire of Niterói / Marcelo Costa de Andrade (1967-) / Brazil / 14 murders
- Vampire Rapist / Wayne Boden (1948-2006) / Canada - 4 murders
- Viña del Mar Psychopaths / Jorge José Sagredo Pizarro (1955-1985) & Carlos Alberto Topp Collins (1950-1985) / Chile / 10 murders
- Werewolf of Dole / Gilles Garnier (?-1573) / France / unknown number of murders
- Zardad's Dog / Abdullah Shah (1965-2004) / Afghanistan / 20+ murders
apr 6 2018 ∞
apr 9 2018 +