Rosario Borgio (1894 – February 21, 1919) was an early Italian mobster establishing one of the first organized crime operations in the Midwestern United States during the early 20th century. In 1917, as the leader of Akron's Black Hand, he offered gang members $250 for each police officer they killed.

Seung-Hui Cho (; Korean: 조승희; [tɕo sɯŋhi] ; January 18, 1984 – April 16, 2007) was a South Korean mass murderer who perpetrated the Virginia Tech shooting in 2007. Cho killed 32 people and wounded 17 others with two semi-automatic pistols on April 16, 2007, at Virginia Tech in Blacksburg, Virginia.

Pasquale Barra (Italian pronunciation: [paˈskwaːle ˈbarra]; 18 January 1942 – 27 February 2015) was an Italian Camorrista who was a senior member and hitman for the Nuova Camorra Organizzata (NCO), a Camorra organisation in Naples. Barra has the distinction of being the first NCO member to become a pentito, when he decided to collaborate with Italian Justice in 1982.

David Parker Ray (November 6, 1939 – May 28, 2002), also known as the Toy-Box Killer, was an American kidnapper, torturer, serial rapist, and suspected serial killer. Ray kidnapped, raped, and tortured an unknown number of women over many decades at his trailer in Elephant Butte, New Mexico, occasionally assisted by accomplices including his daughter Glenda Jean Ray and partner, Cindy Hendy.

Michele del Marco Lupo (19 January 1953 – 12 February 1995) was a serial killer originally from Italy, who was active in the UK. His most notable role was as branch manager at Yves Saint Laurent boutique in Brompton Road, London during the 1980s.

Cynthia Lynn Coffman (born January 19, 1962) is an American serial killer convicted in the 1986 deaths of two women in California. She was convicted along with her boyfriend, James Gregory Marlow.

Vaughn Orrin Greenwood (January 19, 1944 – December 18, 2020) was an American serial killer who gained the nickname the Skid Row Slasher. He murdered eleven vagrants in Southern California between November 1964 and January 1975, in addition to a failed twelfth murder that ultimately led to his capture.

Altemio C. Sanchez (January 19, 1958 – September 22, 2023), also known as the Bike Path Rapist (and later Killer), was a serial killer of Puerto Rican descent, who is known to have raped and murdered at least three women, and raped at least 9 to 15 girls and women in and around Buffalo, New York during a 31-year span from 1975, though perhaps earlier, until 2006.

Lawson D. Franklin (January 19, 1804 – April 8, 1861) was an American planter, slave trader and businessman in the antebellum South.

Claude Lastennet (January 19, 1971 – December 19, 2023) was a French serial killer who was convicted of murdering five elderly women in several Parisian suburbs between August 1993 and January 1994. He was convicted and sentenced to life imprisonment with the possibility of parole for these crimes, and died behind bars.

Carl Drega (January 19, 1935 – August 19, 1997) was an American spree killer who killed four people in Colebrook, New Hampshire on August 19, 1997.

Robert Edward Lee (January 19, 1807 – October 12, 1870) was a Confederate general whose early actions in the American Civil War led to his appointment as the overall commander of the Confederate States Army near the end of the war. He led the Army of Northern Virginia, the Confederacy's most powerful army, from 1862 until its surrender in 1865, earning a reputation as one of the war's most skilled tacticians.

Obadyah Ben-Yisrayl (born Christopher Dwayne Peterson January 20, 1969) is an American serial killer found guilty of committing four murders and acquitted on three other murder charges related to the "Shotgun Killer" spree in Indiana from October 30, 1990, to December 18, 1990.

Joel David Rifkin (born January 20, 1959) is an American serial killer who was sentenced to 203 years in prison for the murders of at least 9 women between 1989 and 1993.

Robert Morris Jr. (January 20, 1734 – May 8, 1806) was a British-born American merchant, investor, and politician, and one of the Founding Fathers of the United States.

Enoch Lewis "Nucky" Johnson (January 20, 1883 - December 9, 1968) was an American politician from the Republican Party who served as an Atlantic City political boss, sheriff of Atlantic County, businessman, and crime boss who was the leader of the political machine that controlled Atlantic City and the Atlantic County government from the 1910s until his conviction and imprisonment in 1941. His rule encompassed the Roaring Twenties when Atlantic City was at the height of its popularity as a refuge from Prohibition.

Suharto (8 June 1921 – 27 January 2008) was an Indonesian military officer and politician who served as the second and longest-serving president of Indonesia from 1967 to 1998. Widely regarded as a military dictator by international observers, Suharto led Indonesia as an authoritarian regime from 1967 until his resignation in 1998 following nationwide unrest.

Howard Barton Unruh (January 21, 1921 – October 19, 2009) was an American mass murderer who shot and killed thirteen people and injured three others during a twelve-minute walk through a one-block span of his neighborhood in Camden, New Jersey, on September 6, 1949. The incident, which became known as the "Walk of Death" and the "Camden shootings", ended after Unruh surrendered to police after running out of ammunition.

John Bodkin Adams (21 January 1899 – 4 July 1983) was a British general practitioner, convicted fraudster, and suspected serial killer. Between 1946 and 1956, 163 of his patients died while in comas, which was deemed to be worthy of investigation.

Gowri Shankar (21 January 1954 – 27 April 1995), better known as 'Auto' Shankar, was an Indian criminal, murderer and gangster from Tamil Nadu, who was active in Chennai throughout the 1970s and 1980s.

Alfred Griner Packer (January 21, 1842 – April 23, 1907), also known as the "Colorado Cannibal", was an American prospector and self-proclaimed wilderness guide who confessed to cannibalism during the winter of 1874. Though no clear or definitive evidence has been found to this day, and despite in-depth research about proof of his deeds, he is one of the four persons historically convicted for cannibalism in the United States.

Cody Alan Legebokoff (born 21 January 1990) is a Canadian serial killer convicted in 2014 by the Supreme Court of British Columbia of murdering three women and one teenage girl, between 2009 and 2010, in or near the city of Prince George, British Columbia. He is one of Canada's youngest convicted serial killers, and his trial drew national attention.

Alfredo Beltrán Leyva (born January 21, 1971), commonly referred to by his alias El Mochomo (The Desert Ant), is a Mexican convicted drug lord and former leader of the Beltrán-Leyva Cartel, a drug trafficking organization. He was one of Mexico's most-wanted drug lords.

Thomas Jonathan "Stonewall" Jackson (January 21, 1824 – May 10, 1863) was a Confederate general and military officer who served during the American Civil War. He played a prominent role in nearly all military engagements in the eastern theater of the war until his death.

Oscar Ray Bolin Jr. (January 22, 1962 – January 7, 2016) was an American serial killer and convicted rapist.

Shelly Andre Brooks (born January 22, 1969) is an American serial killer who murdered at least seven women in Detroit, Michigan, from 2001 to 2006. He is serving multiple life sentences without the possibility of parole.

Elfriede Martha Blauensteiner (22 January 1931 – 16 November 2003), dubbed The Black Widow, was an Austrian serial killer who murdered at least three victims by poison. In each case, she inherited the victim's possessions.

Antoine Vincent Walsh (22 January 1703 – 2 March 1763) was a French merchant, ship owner, and slave trader of Irish descent. He operated in Nantes, Province of Brittany.

Vito Cascio Ferro or Vito Cascioferro (Italian pronunciation: [ˈviːto ˈkaʃʃo ˈfɛrro]; 22 January 1862 – 20 September 1943), also known as Don Vito, was an Italian criminal who was a prominent member of the Sicilian Mafia. He also operated for several years in the United States.

Vasil Iliev (Bulgarian: Васил Илиев; January 22, 1965 – April 25, 1995) was a Bulgarian mobster, businessman and wrestler. Iliev is considered to have been the most powerful gangster in the Balkans during his time.

François Vérove (French pronunciation: [fʁɑ̃swa veʁɔv]; 22 January 1962 – 29 September 2021), also known as Le Grêlé ([lə ɡʁɛle, ɡʁele], the Pockmarked Man), was a French serial killer, rapist and police officer who murdered at least three people between 1986 and 1994 in the Île-de-France region. He received his nickname from acne scars seen on his face by witnesses following his first murder.

Guy Fawkes (; 13 April 1570 – 31 January 1606), also known as Guido Fawkes while fighting for the Spanish, was a member of a group of provincial English Catholics involved in the failed Gunpowder Plot of 1605. He was born and educated in York; his father died when Fawkes was eight years old, after which his mother married a recusant Catholic.

Romulus Vereș (23 January 1929 in Cluj – 13 December 1993 in Ștei) was a notorious serial killer from Romania, known as "The Man with the Hammer".

Samuel Joseph Byck (January 30, 1930 – February 22, 1974) was an American hijacker and attempted assassin. On February 22, 1974, he attempted to hijack a plane flying out of Baltimore/Washington International Airport, intending to crash into the White House in the hopes of killing U.S.

Edgard Alves de Andrade (born 24 January 1970), more known as Doca da Penha or Urso ("Bear"), is a Brazilian criminal identified as one of the main leaders of the Comando Vermelho criminal organization. He is currently believed to be leading drug trafficking operations in the Penha Complex.

John "Jackie" D'Amico (July 11, 1936 – December 27, 2023) was an American mobster and caporegime in New York City who served as street boss of the Gambino crime family from 2005 to 2011. "Street boss" had been the family's number one position ever since official Boss Peter Gotti started serving a life sentence in prison.

Sir Henry Morgan (Welsh: Harri Morgan; c. 1635 – 25 August 1688) was a Welsh privateer, plantation owner and, later, the lieutenant governor of Jamaica.

Tadeusz Kwaśniak (24 January 1951 – 24 July 1991), known as the Towel Strangler (Polish: Ręcznikowy dusiciel), was a Polish paedophile and serial killer who raped and murdered five boys across Poland between April 1990 and April 1991.

Hadrian ( HAY-dree-ən; born Publius Aelius Hadrianus, 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. Hadrian was born in Italica, in the present-day Andalusian province of Seville in southern Spain, an Italic settlement in Hispania Baetica; his gens Aelia came from the town of Hadria in eastern Italy.

Luis Alfredo Garavito Cubillos (25 January 1957 – 12 October 2023), also known as La Bestia ("The Beast") or Tribilín ("Goofy"), was a Colombian serial killer, sex offender, pedophile, and necrophile who sexually assaulted 200 victims before murdering 193 victims, mostly young men and boys from 1992 to 1999 in western Colombia.

Gary Ray Bowles (January 25, 1962 – August 22, 2019) was an American serial killer who was executed in 2019 for the murders of six men in 1994. He is sometimes referred to as The I-95 Killer since most of his victims lived close to the Interstate 95 highway.

Manuel Delgado Villegas (Spanish pronunciation: [manw'el delˈɣaðo βiˈʎeɣas]; 25 January 1943 – 2 February 1998), also known as El Arropiero,[a] was a Spanish serial killer active between 1964 and 1971. Delgado claimed to have carried out 48 murders in Spain, Italy and France – of these cases the Spanish police were only able to investigate twenty-two in Spain and considered him the definite perpetrator of seven.

Evsei Borisovich Agron (; Russian: Евсей Борисович Агрон; 25 January 1932 – 4 May 1985) was a Soviet-American mobster and boss of New York City's Russian mafia during the 1970s and 1980s. Known for his cruelty, he was called the "Godfather" of the Russian American mafia.

Luis Alfredo Garavito Cubillos (25 January 1957 – 12 October 2023), also known as La Bestia ("The Beast") or Tribilín ("Goofy"), was a Colombian serial killer, sex offender, pedophile, and necrophile who sexually assaulted 200 victims before murdering 193 victims, mostly young men and boys from 1992 to 1999 in western Colombia.

Ricky Donnell "Freeway Ricky" Ross (born January 26, 1960) is an American author and former drug lord best known for the drug empire he established in Los Angeles, California, in the early to mid 1980s. He was sentenced to life in prison, though the sentence was shortened on appeal and Ross was released in 2009.

Émile Louis (21 January 1934 – 20 October 2013) was a French bus driver and the prime suspect in the disappearance of seven young women in the Yonne department, Burgundy, in the late 1970s. He confessed to their murders in 2000, but retracted this confession one month later.

Howell Emanuel "Trai" Donaldson III (born January 26, 1993) is a serial killer who was convicted of the 2017 murders of three men and one woman around the Seminole Heights neighborhood of Tampa, Florida. All four victims were shot dead seemingly at random.

Pablo Acosta Villarreal, commonly referred to as El Zorro de Ojinaga ("The Ojinaga Fox"; 1937-1987) was a Mexican narcotics smuggler who controlled crime along a 200-mile stretch of U.S.-Mexico border. At the height of his power, he was smuggling 60 tons of cocaine per year for Colombian cartels in addition to the large quantities of marijuana and heroin that were the mainstay of his business.

Anatoly Huseinovich Nagiyev (Russian: Анато́лий Гусе́йнович Наги́ев; 26 January 1958 – 28 October 1981), known as The Mad One (Russian: Бешеный), was a Soviet serial killer, mass murderer and rapist who killed at least 6 women with severe cruelty between 1979 and 1980. He also raped at least 30 women over the same period of time and pursued famous Soviet singer Alla Pugacheva in an attempt to kill her.

Nicolae Ceaușescu ( chow-SHESK-oo, Romanian: [nikoˈla.e tʃe̯a.uˈʃesku] ; 26 January [O.S. 13 January] 1918 – 25 December 1989) was a Romanian communist politician who led Romania as general secretary of the Romanian Communist Party from 1965 and as president from 1974 until his execution in 1989.