This is a list of notable serial killers, by the country where most of the killings occurred.

Convicted serial killers by country

Afghanistan Abul Djabar: killed 65 men and boys by strangling them with turbans while raping them; suspected of over 300 murders; sentenced to death and hanged in 1970. Abdullah Shah: killed at least 20 travelers on the road from Kabul to Jalalabad while serving under warlord Zardad Khan; also killed his wife; executed with a single shot in the head in 2004.

Algeria Madeleine Mouton: known as "The Berthelot Poisoner"; French immigrant who poisoned between four and seven people in Sidi Bel Abbès from 1943 to 1944 to pay off her debts; executed in 1948.

Argentina Brenda Agüero: neonatal nurse who poisoned multiple babies in Córdoba, killing five; sentenced to life imprisonment. Marcelo Antelo: known as "The San La Muerte Killer"; drug addict who killed at least four people in Buenos Aires between February and August 2010, allegedly in the name of a pagan saint; sentenced to life imprisonment. Roberto José Carmona: known as "The Human Hyena"; abducted, raped and shot dead a teenage girl near Carlos Paz in 1986; sentenced to life, killed two inmates in prison; murdered a cab driver after a brief escape from prison in 2022. Carmona got two additional life sentences for his latest crimes. Diego Casanova: known as El Matapresos ("The Convicts' Killer"); murdered five inmates in the Boulogne Sur Mer prison in Mendoza Province while serving a jail term for a murder he committed in 2004. Juan Catalino Domínguez: ranch hand who killed eight people around southeast Buenos Aires Province from 1944 to 1948 while on the run; shot dead by police agents in Madariaga in 1948. Florencio Fernández: known as "The Argentine Vampire"; killed 15 women in his hometown of Monteros, Tucumán Province, during the 1950s; died in jail in 1968. Dismissed as an urban legend by several Argentine sources. Cayetano Santos Godino: known as "Petiso Orejudo" ("Big Eared Midget"); killed four children between 1906 and 1912. He was 16 when arrested in 1912 and died in prison in 1944. Cayetano Domingo Grossi: the first known serial killer in Argentine history; Italian immigrant who murdered five of his newborn children in the neighborhood of Retiro in Buenos Aires, between 1896 and 1898; executed by firing squad in 1900. Francisco Antonio Laureana: known as "The Satyr of San Isidro"; murdered 15 women from 1974 to 1975 in the northern area of Greater Buenos Aires, raping 13 of them; killed in a shootout with the police in February 1975. Yiya Murano: known as "The Poisoner of Monserrat", poisoned three female acquaintances over borrowed money in Buenos Aires in 1979. Javier Hernán Pino: killed and robbed five people between February and October 2015 in three cities in different provinces across the country; sentenced to life imprisonment. Robledo Puch: known as "The Angel of Death"; killed 11 people before his arrest in 1972; sentenced to life imprisonment in 1980. Currently the longest-incarcerated inmate in South America.

Australia David and Catherine Birnie: responsible for "The Moorhouse Murders"; raped and murdered four women in Willagee in 1986; David died by suicide in 2005, while Catherine remains incarcerated and serving a life sentence. Gregory Brazel: shot a woman to death in a 1982 armed robbery; murdered two prostitutes in 1990; sentenced to life imprisonment. John Bunting, Robert Wagner and James Vlassakis: convicted of the Snowtown murders of 12 people between 1992 and 1999. Also known as the "Bodies in the Barrels Murders". Eric Edgar Cooke: known as "The Night Caller"; killed at least eight people and attempted to kill many more in and around Perth between 1959 and 1963; executed in 1964, becoming the last person to be hanged in Western Australia. John Leslie Coombes: killed two men in 1984 and one woman in 2009 around the Victoria area; sentenced to life imprisonment. Bandali Debs: convicted of murdering two police officers and two prostitutes in the 1990s; sentenced to life imprisonment. Paul Denyer: known as "The Frankston Killer"; murdered three women in 1993 in the surrounding suburbs of Frankston; sentenced to life imprisonment. Peter Dupas: murdered between three and six women around Victoria from 1985 to 1999, severing their breasts; sentenced to life imprisonment. Leonard Fraser: known as "The Rockhampton Rapist"; convicted of killing four women in Rockhampton, Queensland; died in prison in 2007. John Wayne Glover: known as "The Granny Killer"; English immigrant who killed at least six elderly women on Sydney's North Shore; died by suicide in 2005. Caroline Grills: known as "Auntie Thally"; a serial poisoner of five family members in New South Wales between 1947 and 1953; died in prison in 1960. Paul Steven Haigh: sentenced to life imprisonment without parole for the murders of seven people in Victoria in the late 1970s. Matthew James Harris: strangled a friend's brother, a female friend, and a male neighbor over five weeks in 1998 in Wagga Wagga; sentenced to life imprisonment. Thomas Jeffrey: Tasmanian penal colony escapee responsible for the murders of five people; executed in 1826.Thomas Jeffries convict No. 3634, conduct record, State Archives of Tasmania. Frances Knorr: known as "The Baby Farming Murderess"; English-born baby farmer who killed three infants; executed in 1894. Eddie Leonski: known as "The Brownout Strangler"; United States Army soldier who killed three women in Melbourne; executed by the U.S. military in 1942. John Lynch: known as "The Berrima Axe Murderer"; killed ten people from 1835 to 1841. Executed in 1842. William MacDonald: known as "The Mutilator"; English immigrant who killed at least five men between June 1961 and April 1963 throughout Sydney. Died in prison in 2015, becoming the longest serving inmate in New South Wales. John Balaban: a Romanian emigrant who murdered at least five people in France and Australia from 1948 to 1953, including his wife and her family; executed in 1953. John and Sarah Makin: late 19th century baby farmers who killed and buried 12 children at a succession of their homes. John was executed in 1893, while Sarah was reprieved, and paroled in 1911. Ivan Milat: killed at least seven tourists in Belanglo State Forest, New South Wales between 1989 and 1993, which became known as the "Backpacker Murders"; suspected in similar disappearances in Newcastle. Died in prison in 2019. Martha Needle: known as "The Black Widow of Richmond," poisoner of four family members and her boyfriend's brother; executed in 1894. Alexander Pearce: Irish convict who escaped with seven other convicts from imprisonment in Van Diemen's Land; five of them were killed and cannibalised, leaving Pearce the only one left; hanged in 1824. Martha Rendell: killed three stepchildren with hydrochloric acid in 1907–08; last woman to be hanged in Western Australia. Lindsey Robert Rose: New South Wales serial and contract killer who murdered five people between 1984 and 1994; sentenced to life imprisonment. 'Snowy' Rowles: committed the "Murchison Murders"; stockman who murdered three people using a method from a then-unpublished book of author Arthur Upfield, and was caught after forgetting to complete one of the steps after the third murder. Executed in 1932. Arnold Sodeman: known as "The School-girl Strangler"; killed four children in Melbourne in the 1930s. Executed in 1936. John Whelan: Tasmanian penal colony escapee responsible for the murders of five people; executed in 1855. Christopher Worrell and James Miller: known as "The Truro Murderers"; murdered seven people in 1976–1977; Worrell died in a car crash prior to identification while Miller was sentenced to life and died in 2008.

Austria Elfriede Blauensteiner: known as "The Black Widow"; poisoner of three individuals; died in prison in 2003. Max Gufler: bludgeoned, poisoned and drowned women in the 1950s; convicted of four murders and two attempted murders, but believed to have committed 18; died 1966. Leopoldine Kasparek: known as "The Strangler of Vienna"; strangled 14 wealthy, elderly women, killing 4; died in prison in 1921. Dariusz Kotwica: known as "The Euro Ripper"; Polish vagrant who murdered at least three pensioners in Austria and Sweden in 2015; suspected of more murders in the Netherlands, Czech Republic and the United Kingdom; sentenced to involuntary commitment. Lainz Angels of Death: four nurses at the Lainz General Hospital in Vienna who admitted to murdering 49 patients between 1983 and 1989. Martha Marek: poisoned three family members and a lodger in her house with thallium between 1932 and 1937; executed 1938. Harald Sassak: gasworks employee who between 1971 and 1972 killed six people for the purpose of robbery; died from an undisclosed illness in 2013. Hugo Schenk: known as "The Viennese Housemaids Killer"; swindler who killed four maids in 1883 with his accomplice Karl Schlossarek; suspected of more murders; executed 1884. Franz Schmidt: killed a young girl in Innsbruck in 1957, later released and committed a double murder in Redlham in 1984; suspected of a child murder in 1982; sentenced to life, released in 2013. Franz and Rosalie Schneider: couple who robbed and murdered at least three, possibly six, maidservants in Lower Austria from June to July 1891; Franz was executed in 1892, while Rosalie's sentence was reduced to life imprisonment. Jack Unterweger: author and sexual sadist; convicted of ten murders; believed to have killed 12 women; died by suicide in prison in 1994.

The Bahamas Cordell Farrington: killed four children and his boyfriend from 2002 to 2003; sentenced to death and later commuted to life imprisonment. Michaiah Shobek: known as "The Angels of Lucifer Killer"; American immigrant who murdered three fellow US tourists from 1973 to 1974; executed in 1976.

Bangladesh Roshu Kha: enraged over rejection by his lover, Roshu killed at least 11 garment workers in Chandpur District. He pretended to love them, later killing them brutally. Sentenced to death. Sabuj Sheikh: known as "Psycho Samrat"; vagrant who murdered six people in Savar from 2025 to 2026; died before trial. Ershad Sikder: career criminal and corrupt politician responsible for the torture-murders of numerous people in the 1990s; convicted on seven counts of murder and executed in 2004.

Belarus Ivan Kulesh: drunkard who killed three saleswomen between 2013 and 2014 in the Grodno Region; executed in 2016. Yuri Kurilsky: known as "The Monster with the Black Volga"; raped and killed two women and one teenager around the Vitebsk Region from 2004 to 2005; executed in 2007. Eduard Lykov: Russian immigrant who killed five people in drunken quarrels from 2002 to 2011; executed in 2014. Alexey Mikhalenya: murdered three elderly people as a teenager in 2002; served prison term, released and committed a double murder in 2016; executed in 2018. Gennady Mikhasevich: police volunteer who investigated his own mission-oriented murders of 36 women between 1971 and 1985; executed in 1987. Igor Mirenkov: known as "The Svietlahorsk Nightmare"; child killer who murdered six boys from 1990 to 1993; executed in 1996. Sergey Pugachev and Alexander Burdenko: leaders of "The Polotsk Four"; criminals responsible for killing two girls and two car enthusiasts from 2001 to 2002, as well as numerous robberies with two other accomplices; Pugachev was executed in 2005 and Burdenko was sentenced to life imprisonment. Alexander Sergeychik: killed six people from 2000 to 2006 in the Shchuchyn and Grodno Districts; confessed to 12 murders; executed in 2007. Nikolai Tymoshenko: known as "The Fatinsky Maniac"; strangled and dismembered at least three women during drunken disputes in the Mogilev Region from 1999 to 2010; sentenced to life imprisonment.

Belgian Congo