Gordon Frederick Cummins (18 February 1914 – 25 June 1942) was a British serial killer known as the Blackout Killer, the Blackout Ripper and the Wartime Ripper, who murdered four women and attempted to murder two others over a five-day period in Central London in February 1942. He is also suspected of committing two earlier murders in October 1941.

Mary I (18 February 1516 – 17 November 1558) was Queen of England and Ireland from July 1553 and Queen of Spain as the wife of King Philip II from January 1556 until her death in 1558. She made vigorous attempts to reverse the English Reformation, which had begun during the reign of her father, King Henry VIII.

Jacquy Haddouche (19 February 1964 – 23 October 2010) was a French serial killer. He was convicted of three murders committed between 1992 and 2002 and sentenced to life imprisonment with a minimum term of 22 years.

Stephen Peter Morin (February 19, 1951 – March 13, 1985) was an American serial killer who was suspected of being responsible for at least forty murders of young girls and women and seven men in the period from 1969 to 1981. Since Morin led a transient lifestyle and constantly moved around the country, the exact number of his victims is uncertain, but he is suspected of committing a total of 48 violent crimes across the United States.

Eduard Petrovich Berzin (Russian: Эдуа́рд Петро́вич Бе́рзин, Latvian: Eduards Bērziņš; 19 February 1894 – 1 August 1938) was a Latvian Bolshevik, Chekist and NKVD officer that set up Dalstroy, which instituted a system of slave-labor camps in Kolyma, North-Eastern Siberia, one of the most brutal Gulag regions, where hundreds of thousands of political prisoners died or were murdered in subsequent decades.

Viktor Viktorovich Fokin (Russian: Ви́ктор Ви́кторович Фо́кин; 19 February 1935 – 2003), known as The Pensioner Maniac (Russian: Маньяк-пенсионер), was a Russian serial killer who killed at least 10 people in between 1996 and 2000.

David Koresh (; born Vernon Wayne Howell; August 17, 1959 – April 19, 1993) was an American cult leader and preacher who played a central role in the Waco siege of 1993. As the head of the Branch Davidians, a religious sect, Koresh claimed to be its final prophet.

Anatoly Yuriyovych Onoprienko (Ukrainian: Анатолій Юрійович Онопрієнко; Russian: Анато́лий Ю́рьевич Оноприе́нко, Anatoly Yuryevich Onoprienko; 25 July 1959 – 27 August 2013) was a Soviet and Ukrainian serial killer and mass murderer. Known by the nicknames The Beast of Ukraine, The Terminator, and Citizen O, Onoprienko confessed to killing fifty-two people upon being apprehended in April 1996.

Carmine Galante (Italian: [ˈkarmine ɡaˈlante]; February 21, 1910 – July 12, 1979) was an American mafioso who was de facto boss of the Bonanno crime family of New York City. Law enforcement have accused Galante of participating in between 80 and 100 murders, with an extensive arrest record dating back to 1926 for murder, assault, robbery, grand larceny, alcohol tax violation and narcotics.

Robert Gabriel Mugabe ( muu-GAH-bee, Shona: [muɡaɓe]; 21 February 1924 – 6 September 2019) was a Zimbabwean revolutionary and politician who led Zimbabwe from 1980 until he was deposed in a coup in 2017. He served as the first Prime Minister of Zimbabwe from internationally recognised independence in 1980 to 1987, then as the second president of Zimbabwe from 1987 to 2017.

Abdullah Shah (1965 – 20 April 2004) was an Afghan serial killer found guilty in Kabul of killing more than 20 people, including his wife. His sanctioned execution was the first in Afghanistan since the fall of the Taliban in late 2001.

Franz Friedrich Carl Gröpler (22 February 1868, Magdeburg – 30 January 1946, Magdeburg) was Royal Prussian executioner (German: Scharfrichter) from 1906 to 1937. Responsible for carrying out capital punishment in the Prussian provinces, he executed at least 144 people, primarily by beheading with an axe, but also with guillotines.

Franț Țandără (22 February 1930, Izbiceni, Olt County – 2 May 2004, Giurgiu) was a Romanian communist and self-described torturer.

Charles Edmund Cullen (born February 22, 1960) is an American serial killer. While working as a nurse, Cullen murdered dozens—possibly hundreds—of patients during a 16-year career spanning several New Jersey and Pennsylvania medical centers until finally being arrested in 2003.

Khun Sa (Burmese: ခွန်ဆာ, pronounced [kʰʊ̀ɰ̃ sʰà]; 17 February 1934 – 26 October 2007) was an ethnic Han drug lord and warlord. He was born in Hpa Hpeung village, in the Loi Maw ward of Mongyai, Northern Shan State, Burma.

William Patrick Fyfe (born February 27, 1955) is a Canadian serial killer convicted of killing five women in the Montreal area of Quebec, although he claims to have killed four others. He allegedly killed his first victim in 1979 at the age of 24.

Abu Bakar Ba'asyir (born 17 August 1938), also known as Abu Bakar Bashir, Abdus Somad, and Ustad Abu ("Teacher Abu") is a senior Indonesian Islamic and mujahideen figure who was the leader of Jamaah Ansharut Tauhid and Jemaah Islamiyah.

Carl Eric "Charlie" Brandt (February 23, 1957 – September 13, 2004) was an American serial killer who murdered at least four women: his mother in Indiana and a homeless woman, his wife, and his niece in Florida. Growing up in Fort Wayne, Indiana, Brandt shot his parents in their family home on the night of January 3, 1971, when he was 13, killing his pregnant mother and wounding his father.

The Fritzl case emerged in 2008 when a woman named Elisabeth Fritzl (born 6 April 1966) informed investigators in the city of Amstetten, Lower Austria, that she had been held captive for 24 years by her father, Josef Fritzl (born 9 April 1935). Fritzl had assaulted, sexually abused, and raped his daughter countless times during her imprisonment inside a concealed area in the cellar of the family home.

Guarino "Willie" Moretti (February 24, 1894 – October 4, 1951), also known as Willie Moore, was an Italian-American mobster who served as underboss of the Luciano crime family, later known as the Genovese crime family, and a top member of its New Jersey faction under Frank Costello. He was murdered in 1951 after his testimony before the Kefauver Committee made his organized crime colleagues anxious that he would reveal the details of their criminal activities to law enforcement or the press.

Tomás Terry y Adán (24 February 1808 in Caracas, Venezuela – 5 July 1886 in Paris, France) was a Cuban business magnate. His fortune grew to be among the largest in the world in his day.

Dmitry Nikolayevich Balakin (Russian: Дми́трий Никола́евич Бала́кин; born February 24, 1985, in Ruzayevka, Mordovian ASSR, RSFSR), known as the "Saransk Maniac", is a Russian serial killer. He was found guilty of the murder of three people, rape and robbery, and was sentenced to life imprisonment.

Alvin Francis Karpis (born Albin Francis Karpavičius; August 10, 1907 – August 26, 1979) was a Canadian–American criminal of Lithuanian descent known for being a leader of the Barker–Karpis Gang in the 1930s. Nicknamed "Creepy" for his sinister smile and called "Ray" by his gang members, Karpis led the gang along with Fred Barker and Arthur "Doc" Barker.

Satarō Fukiage (吹上 佐太郎, Fukiage Satarō; February 1, 1889 – September 28, 1926) was a Japanese rapist and serial killer. He killed at least seven girls.

Léopold Dion (February 25, 1920 – 17 November 1972) was a Canadian sex offender and serial killer who raped 21 boys, killing four; he was active in Quebec in 1963. He was nicknamed the "Monster of Pont-Rouge" (le monstre de Pont-Rouge).

Robert Clive Napper (born 25 February 1966) is an English serial killer and rapist. He has been convicted of two murders, one manslaughter, two rapes and two attempted rapes.

Sretko Kalinić (Serbian Cyrillic: Сретко Калинић; born 25 February 1974), also known as "Zver" (Serbian Cyrillic: Звер, lit. 'The Beast') or "Beli" (Serbian Cyrillic: Бели, lit.

Eric Edgar Cooke (25 February 1931 – 26 October 1964), nicknamed the Night Caller and later the Nedlands Monster, was an Australian serial killer who terrorised the city of Perth, Western Australia, from September 1958 to August 1963. Cooke committed at least 20 violent crimes, eight of which resulted in deaths.

Francis Heaulme (born 25 February 1959 in Metz) is a French serial killer dubbed the "Criminal Backpacker" ("Routard du crime").

Junko Ogata (緒方 純子, Ogata Junko; born February 25, 1962) is a Japanese serial killer who acted as an accomplice to serial killer Futoshi Matsunaga.

Joseph Edward Duncan III (February 25, 1963 – March 28, 2021) was an American convicted serial killer and child molester who was on death row in federal prison following the 2005 kidnappings and murders of members of the Groene family of Coeur d'Alene, Idaho. He was also serving 11 consecutive sentences of life without parole for the 1997 murder of Anthony Martinez of Beaumont, California.

Ramzi Ahmed Yousef (Urdu: رمزى احمد يوسف; born 27 April 1968) is a Pakistani convicted terrorist who was one of the main perpetrators and the mastermind behind the 1993 World Trade Center bombing and the 1994 bombing of Philippine Airlines Flight 434; he was also a co-conspirator in the Bojinka plot.

Hans Conrad Julius Reiter (26 February 1881 – 25 November 1969) was a German Nazi physician who conducted medical experiments at the Buchenwald concentration camp. He wrote a book on "racial hygiene" called Deutsches Gold, Gesundes Leben – Frohes Schaffen.

Samuel Staniforth (26 February 1769 – 5 April 1851) was an English slave-trader, merchant and politician originally from Liverpool.

Sheikh Ahmed Ismail Hassan Yassin (Arabic: الشيخ أحمد إسماعيل حسن ياسين; June 1936/37 – 22 March 2004) was a Palestinian politician and imam who founded Hamas, an Islamist political and military organization. He also served as the first chairman of the Hamas Shura Council and de facto leader of Hamas since its inception from December 1987 until his assassination in March 2004.

Petr Zelenka (born February 27, 1976) is a Czech serial killer. As a nurse in hospital Havlíčkův Brod, 100 kilometres (62 mi) southeast of Prague, he murdered seven patients by lethal injection, and attempted to kill 10 others between May and December, 2006.

John Thomas Straffen (27 February 1930 – 19 November 2007) was an English serial killer who committed the murder of three prepubescent girls between the ages of five and nine in the counties of Somerset and Berkshire, England, between 1951 and 1952.

Shirley Winters (born February 27, 1958) is a convicted murderer, arsonist, and suspected serial killer from upstate New York. In 1980, she smothered her five-month-old son, Ronald Winters III.

Luigi Chiatti (born 27 February 1968 in Narni) is an Italian murderer, named "The Monster of Foligno" by the media.

Alexander Viktorovich Solonik (Russian: Алекса́ндр Ви́кторович Соло́ник; 16 October 1960 – 31 January 1997) was a Russian gangster, known for his reputation as a notorious hitman in the Russian criminal underworld. Also known as Sasha-Macedonian, Alexander the Great and Superkiller, Solonik was involved in Russian Mob activity for much of the 1990s until disappearing after his second escape from prison.

Michel Peiry (born 28 February 1959), known as The Sadist of Romont, is a Swiss serial killer who killed at least 5 people between 1981 and 1987.

Pedro Pablo Nakada Ludeña (born February 28, 1973) a.k.a. "El Apóstol de la Muerte" ("The Apostle of Death") is a Peruvian serial killer who claimed 25 victims and was convicted of 17 murders.

Marcel Chevalier (28 February 1921 in Montrouge, Seine – 8 October 2008 in Vendôme) worked as the last chief executioner (Monsieur de Paris) in France.

Aslan Rashidovich Usoyan (Georgian: ასლან რაშიდოვიჩ უსოიანი, Russian: Асла́н Раши́дович Усоя́н; 27 February 1937 – 16 January 2013), also known as Baba Gurgur and Grandpa Hassan ("Дед Хасан") or just Grandpa ("Дедушка"), was a Georgian-born Soviet-Russian crime boss of Yazidi Kurdish descent, who began his career operating in Georgia, continued in Moscow, Ural, Siberia, Uzbekistan, Krasnodar, Sochi, and other parts of the former Soviet Union. According to The Economist, he was 'reputed to be Russia's mafia boss'.

Benjamin "Bugsy" Siegel (; February 28, 1906 – June 20, 1947) was an American mobster who was a driving force behind the development of the Las Vegas Strip. Along with his childhood friend and fellow gangster Meyer Lansky, Siegel was influential within the Jewish-American mob, the Italian-American Mafia, and the largely Italian-Jewish coalition known as the National Crime Syndicate.

Aileen Carol Wuornos () (née Pittman; February 29, 1956 – October 9, 2002) was an American serial killer. Between 1989 and 1990, while engaging in street prostitution along highways in Florida, Wuornos shot, killed, and robbed seven of her male clients.

Ricardo Leyva Muñoz Ramirez (; February 29, 1960 – June 7, 2013), better known as Richard Ramirez, was an American serial killer, sex offender and burglar whose killing spree occurred in Greater Los Angeles and the San Francisco Bay Area in the state of California. From April 1984 to August 1985, Ramirez murdered at least fifteen people during various break-ins.