Jozef Gašpar Tiso (Slovak pronunciation: [ˈjɔzef ˈtisɔ], Hungarian pronunciation: [ˈjoʒɛf ˈtiso]; 13 October 1887 – 18 April 1947) was a Slovak politician, dictator and Catholic priest who served as president of the First Slovak Republic, a client state of Nazi Germany during World War II, from 1939 to 1945. After the war, in 1947, he was convicted of treason and executed in Bratislava.

Jean-Charles-Alphonse Avinain dit Davinain (14 October 1798 – 28 November 1867), known as "The Terror of Gonesse" and "The Butcher of Clichy-la-Garenne", was a French criminal and murderer, found guilty of murdering two people. He became known for his quote: "Gentlemen, never confess!

Cristián Labbé Galilea (born 6 March 1948) is a Chilean retired army officer, academic, and politician. He served as the mayor of Providencia, a commune of Santiago, from 1996 to 2012.

Bobby Joe Long (October 14, 1953 – May 23, 2019) was an American serial killer and rapist. During an eight-month period in 1984, Long abducted, sexually assaulted, and murdered at least ten women in the Tampa Bay area in Florida.

Hubert Pilčík (14 October 1891 – 9 September 1951) was a Czech serial killer. After the Second World War, Pilčík started smuggling people across the border from Czechoslovakia into West Germany.

François Bozizé Yangouvonda (born 14 October 1946) is a Central African politician who was President of the Central African Republic from 2003 to 2013. He was the only Central African president born in modern-day Gabon.

Tomás de Torquemada (14 October 1420 – 16 September 1498), anglicized as Thomas of Torquemada, was a Spanish Dominican friar and the first Grand Inquisitor of the Spanish Inquisition. In that role, he led a group of ecclesiastical prelates created in 1478 to uphold Catholic religious orthodoxy within the newly formed union of the crowns of Castile and Aragon, presently known as the Kingdom of Spain.

The Luby's shooting, also known as the Luby's massacre, was a mass shooting that took place on October 16, 1991 at a Luby's Cafeteria in Killeen, Texas, United States. The perpetrator, 35-year-old George Pierre Hennard, drove his pickup truck through the front window of the cafeteria before opening fire, killing 23 people and wounding 27 others.

Leroy Nicholas Barnes (October 15, 1933 – June 18, 2012) was an American crime boss, active in New York City during the 1970s.

Michael Madison (born October 15, 1977) is an American serial killer and rapist from East Cleveland, Ohio who is known to have committed the murders of at least three women over a nine-month period in 2012 and 2013. He was arrested and charged with the crimes in 2013 and was sentenced to death in 2016.

Guy Georges (born Guy Rampillon, 15 October 1962) is a French serial killer and serial rapist, dubbed le tueur de l'Est Parisien ("the East Paris killer") or the Beast of the Bastille (la bête de la Bastille). He was convicted on 5 April 2001, of murdering seven women between 1991 and 1997.

Peter Arthur Gotti (October 15, 1939 – February 25, 2021) was an American mobster who served as boss of the Gambino crime family of New York following the imprisonment of his younger brother John Gotti.

Juan Díaz de Garayo y Ruiz de Argandoña, also known as "The Sacamantecas" ("The fat extractor" in Spanish) (17 October 1821 – 11 May 1881), was a Spanish serial killer active near Vitoria, Álava, who strangled five women and a 13-year-old girl, and attacked four other women during two different periods, 1870 to 1874 and 1878 to 1879. A lust-motivated serial killer, Garayo first killed prostitutes after hiring and sleeping with them consensually but grew more disorganized and violent as time went on, attacking, raping and murdering women that he saw walking alone in the country.

Lyda Southard (October 16, 1892 – February 5, 1958), also known as Lyda Anna Mae Trueblood, was an American female suspected serial killer. It was suspected that she had killed four of her husbands, a brother-in-law, and her daughter by using arsenic poisoning derived from flypaper in order to obtain life insurance money.

Andrei Romanovich Chikatilo (Russian: Андрей Романович Чикатило; Ukrainian: Андрій Романович Чикатило, romanized: Andrii Romanovych Chykatylo; 16 October 1936 – 14 February 1994) was a Ukrainian-born Soviet serial killer nicknamed "the Butcher of Rostov", "the Rostov Ripper", and "the Red Ripper" who sexually assaulted, murdered, and mutilated at least fifty-two women and children between 1978 and 1990 in the Russian SFSR, the Ukrainian SSR, and the Uzbek SSR.

Alois Weiss (or: Weiß) (16 October 1906 in Ruma, Austria-Hungary – 26 February 1969 in Straubing, Germany) was the executioner at the Gestapo Pankrác prison in Prague during the Second World War.

Andrei Romanovich Chikatilo (Russian: Андрей Романович Чикатило; Ukrainian: Андрій Романович Чикатило, romanized: Andrii Romanovych Chykatylo; 16 October 1936 – 14 February 1994) was a Ukrainian-born Soviet serial killer nicknamed "the Butcher of Rostov", "the Rostov Ripper", and "the Red Ripper" who sexually assaulted, murdered, and mutilated at least fifty-two women and children between 1978 and 1990 in the Russian SFSR, the Ukrainian SSR, and the Uzbek SSR.

Mack Ray Edwards (October 17, 1918 – October 30, 1971) was an American child molester and serial killer who molested and murdered at least six children in Los Angeles County, California, between 1953 and 1970. Sentenced to death, he hanged himself in his prison cell.

Evelita Juanita Spinelli (October 17, 1889 – November 21, 1941) nicknamed The Duchess, was the first woman to be executed by the state of California. She was a gangster and ex-wrestler.

Zdzisław Marchwicki (18 October 1927 – 26 April 1977), known as The Zagłębie Vampire (Polish: Wampir z Zagłębia), was an alleged Polish serial killer who, together with several accomplices, was convicted of killing 14 women and attacking 7 others around the country from 1964 to 1970. For this, Marchwicki was executed in 1977, but since then his guilt has been questioned.

Luc Georges Marc Jean Jouret (18 October 1947 – 5 October 1994) was a Belgian doctor and homeopath. Jouret founded the Order of the Solar Temple (OTS) with Joseph Di Mambro in 1984.

Takashi Sakai (酒井 隆, Sakai Takashi; 18 October 1887 – 30 September 1946) was a lieutenant general in the Imperial Japanese Army during World War II, known for his role as Governor of Hong Kong under Japanese occupation.

Wayne Nathan Nance (October 18, 1955 – September 4, 1986), known as The Missoula Mauler, was an American serial killer in the state of Montana. Nance was shot and killed while committing a home invasion of a co-worker's residence; thus, Nance was never formally charged, tried, or convicted of any murder.

Barry Peter Prudom (born Barry Edwards; 18 October 1944 – 4 July 1982), dubbed the Phantom of the Forest, was an English electrician and multiple murderer who became the subject of what was, at the time, the largest manhunt in British history. Prudom became a fugitive after killing PC David Haigh on 17 June 1982.

Nicholas Brent Corwin (1980–1988) was an eight-year-old boy who was shot and killed by thirty-year-old mentally ill woman Laurie Dann, inside an elementary school in Winnetka, Illinois, United States, on May 20, 1988. Dann also shot several other students, all of whom survived, then took a family hostage, injuring an occupant with a gunshot before committing suicide.

Pla y Monge, Ramón Pedro Francisco or the Marquis of Amboage (19 October 1823 - 6 September 1892) was a philanthropic multimillionaire and politician of the 19th century born in Ferrol, Galicia.

Gaddafi Farag Abdel Atti (Arabic: قذافي فراج عبد العاطي; born October 20, 1971), known as Safah El Giza (The Giza Butcher), is an Egyptian serial killer and fraudster who murdered four people from 2015 to 2017 in Giza and Alexandria out of an attempt to cover up his fraudulent activities. Convicted for the killings and related charges, he was given four death sentences for each, which he is currently appealing.

Michael Joseph Swango (born James Michael Swango, October 21, 1954) is an American serial killer and licensed physician who is estimated to have been involved in as many as 60 fatal poisonings of patients and colleagues in the United States and Zimbabwe; he admitted to causing four deaths. He was sentenced in 2000 to three consecutive life terms without the possibility of parole and is serving his sentence at ADX Florence at his own request.

William Leonard Pickard (born October 21, 1945) is one of two people convicted in the largest lysergic acid diethylamide (LSD) manufacturing case in history. In 2000, while moving their LSD laboratory across Kansas, Pickard and Clyde Apperson were pulled over while driving a Ryder rental truck and a follow car.

Christian Rath (October 22, 1831 – February 14, 1920) was a German-American soldier and businessman. Among his duties as an officer in the U.S.

Ottilie "Tillie" Klimek (born Otylia Gburek; 1876 – November 20, 1936) was a Polish American serial killer, active in Chicago. According to accounts, she pretended to have precognitive dreams, accurately predicting the dates of death of her victims, when in reality she was merely scheduling their deaths.

Pasquale "Patsy" Fuca (October 22, 1932 - April 15, 1999) was an American mobster in the Lucchese crime family of New York City. He was born and raised in Brooklyn.

John Ingvar Lövgren (22 October 1930 – 9 February 2002), later renamed John Ingvar Andersson, was a Swedish serial killer and rapist who confessed to four murders committed between 1958 and 1963 in the Stockholm region. Lövgren was convicted and sentenced to closed psychiatric treatment at Salberga prison.

Václav Mrázek (22 October 1925 – 29 December 1957) was a Czech serial killer who was convicted of killing at least seven people in Chomutov from 1951 to 1957. While primarily sexually motivated, he also robbed his victims, and at trial, he was convicted of 127 total crimes.

Richard Thomalla (German: [toˈmala]; 23 October 1903 – 12 May 1945) was a German war criminal and SS commander of Nazi Germany. A civil engineer by profession, he was head of the SS Central Building Administration at Lublin reservation in occupied Poland.

Archibald Dalzel (c. 1740 – c.

Dmitry Sharifyanovich Karimov (Russian: Дми́трий Шарифья́нович Кари́мов; born 23 October 1978), known as The Concrete Products Maniac (Russian: Маньяк с ЖБИ), is a Russian serial rapist and serial killer, who raped 10 women from 2005 to 2006, killing 7 of them.

Adrian Stroe (born 24 October 1959), known as The Taxi Driver of Death, is a Romanian serial killer responsible for the murders of three women in the vicinity of Bucharest, committed between January and September 1992. Sentenced to life imprisonment for these murders in 1996, he was paroled in 2018.

Francisco Rafael Arellano Félix (24 October 1949 – 18 October 2013) was a Mexican drug lord and former leader of the Tijuana Cartel, a drug trafficking organization. He was the oldest of seven brothers and headed the criminal organization early in the 1990s alongside them.

James II and VII (14 October 1633 O.S. – 16 September 1701) was King of England and Ireland as James II and King of Scotland as James VII from February 1685 until he was deposed in the 1688 Glorious Revolution.

Stephen Delancey (born Étienne de Lancy; October 24, 1663 – November 18, 1741) was a French-born American merchant and politician in colonial New York who served as a member of the New York General Assembly and the Executive Council. His children, including James De Lancey and Oliver DeLancey, continued to wield great influence until the American Revolution.

Rafael "Rafa" Caro Quintero (born October 24, 1952) is a Mexican former drug lord who co-founded the now-disintegrated Guadalajara Cartel with Miguel Ángel Félix Gallardo and other drug traffickers in the late 1970s. He is the brother of fellow drug trafficker Miguel Caro Quintero, founder and former leader of the defunct Sonora Cartel.

Edmund Kolanowski (24 October 1947 – 28 July 1986) was a Polish serial killer and necrophile who killed three women, as well as mutilating several corpses from graveyards.

Ronald Kray (24 October 1933 – 17 March 1995) and Reginald Kray (24 October 1933 – 1 October 2000) were English identical twin brothers from Haggerston who were heavily involved in organised crime from the late 1950s until their arrest in 1968.

Ronald Kray (24 October 1933 – 17 March 1995) and Reginald Kray (24 October 1933 – 1 October 2000) were English identical twin brothers from Haggerston who were heavily involved in organised crime from the late 1950s until their arrest in 1968.

Li Keyong (Chinese: 李克用; pinyin: Lǐ Kèyòng) (October 24, 856 – February 24, 908) was a Chinese military general and politician of Shatuo ethnicity, and from January 896 the Prince of Jin (Chinese: 晉王; pinyin: Jìn Wáng), which would become an independent state after the fall of the Tang dynasty in 907. Li served as a Jiedushi provincial military governor during the late Tang period and was an instrumental figure in the development of a Shatuo base of power in what is today's Shanxi Province of China.

Rafael Leónidas Trujillo Molina ( troo-HEE-yoh; Spanish: [rafaˈel tɾuˈxiʝo]; 24 October 1891 – 30 May 1961), nicknamed "El Jefe" (Spanish: [el ˈxefe]; lit. 'The Boss'), was a Dominican military officer and dictator who ruled the Dominican Republic from August 1930 until his assassination in May 1961.

Niklaus Barbie (25 October 1913 – 25 September 1991) was a German officer of the Schutzstaffel and Sicherheitsdienst who worked in Vichy France during World War II. He became known as the "Butcher of Lyon" for having personally tortured prisoners—primarily Jews and members of the French Resistance—as the head of the Gestapo in Lyon.

Maury Troy Travis (October 25, 1965 – June 10, 2002) was an American serial killer. Travis was named in a federal criminal complaint for the murders of two women.

Nikolai Nikolaevich Kozlenya (Russian: Никола́й Никола́евич Козле́ня; born 25 October 1971) is a Russian criminal and serial killer, who in the period between 1998 and 2001 committed 7 murders and several other attempted murders against drivers, with the aim of seizing their vehicles.