Dean Arnold Corll (December 24, 1939 – August 8, 1973) was an American serial killer and sex offender who abducted, raped, tortured and murdered at least 29 teenage boys and young men between 1970 and 1973 in Houston and Pasadena, Texas. He was aided by two teenaged accomplices, David Owen Brooks and Elmer Wayne Henley.

The serial murders in Essonne were a series of four murders that occurred from November 2011 to April 2012 in an area of ten square kilometers in the north-east of the department of Essonne, France. The main suspect, Yoni Palmier, was charged on April 16, 2012.

Joseph Jerome "Jerry" Scalise (born December 25, 1937) is a Chicago mobster and a high-ranking member of the Chicago Outfit criminal organization. He is most known for stealing the Marlborough diamond in London in 1980, and also for serving as a technical advisor on the 2009 film Public Enemies.

Janie Lou Gibbs (née Hickox; December 25, 1932 – February 7, 2010) was an American serial killer from Cordele, Georgia, who killed her three sons, a grandson, and her husband, by poisoning them with arsenic in 1966 and 1967.

Aleksandr Andreevich Rubel (born 25 December 1980) is a Ukrainian-born Estonian serial killer convicted of six murders in Tallinn, Estonia. Sentenced as a minor to the maximum punishment allowed by law (eight years of imprisonment), he was released from Tartu Prison on 8 June 2006.

Stefan Böhm (other last name versions: Beym, Bem) (December 25, 1741 – February 26, 1813) was a Warsaw executioner.

Dawood Ibrahim Kaskar ( ; born 26 December 1955) is an Indian born gangster, mob boss, drug lord and narcoterrorist reportedly residing in Pakistan. He is the leader of the organised crime syndicate D-Company, which he founded in Mumbai in the 1970s.

Margarita Sánchez Gutiérrez (born 26 December 1953, in Málaga), also known as the "Black Widow of Barcelona" and "The Black Widow of Hospitalet", is a suspected Spanish serial killer who received her name for her method of murder – by poisoning the food and drinks she offered her victims. She managed to kill four people and poisoned three others who managed to survive.

Randall Brent Woodfield (born December 26, 1950) is an American serial killer, serial rapist, kidnapper, robber, burglar, and former football player who was dubbed the I-5 Killer or the I-5 Bandit by the media due to the crimes he committed along the Interstate 5 corridor running through Washington, Oregon and California. Before his crimes, Woodfield was best known for having played for the Green Bay Packers.

Mao Zedong (26 December 1893 – 9 September 1976), also known as Chairman Mao, was a Chinese revolutionary, politician, writer, political theorist and the founder of the People's Republic of China (PRC). He led China from the PRC's establishment in October 1949 until his death in September 1976, primarily through his role as the Chairman of the Chinese Communist Party (CCP).

Ricky Lee Green (December 27, 1960 – October 8, 1997) was an American serial killer who murdered at least four people in Texas between 1985 and 1986, at least two of which were killed with the help of his wife, Sharon. Convicted of all four murders and sentenced to death in one case, Green was executed at the Huntsville Unit in 1997.

Zhou Liqi (Chinese: 周立齐; born December 27, 1984) is a Chinese slacker culture influencer. He became famous in 2016 after a 2012 video went viral of him being questioned by local police in Guangxi after being arrested for stealing electric bicycles.

John Edward Robinson (born December 27, 1943) is an American convicted serial killer, kidnapper, rapist, and forger. He was found guilty and received the death penalty in 2003 for three murders committed in Kansas.

Juana Dayanara Barraza Samperio (born 27 December 1957) is a Mexican convicted serial killer and former professional wrestler known as "La Mataviejitas" ("The Old Lady Killer"). She was convicted of the murders of 16 elderly women and sentenced to 759 years in prison.

Ivan Robert Marko Milat (Croatian: [iʋan marko milat]; 27 December 1944 – 27 October 2019), commonly referred to in media as the Backpacker Murderer, was an Australian serial killer who was convicted for the abduction, assault, robbery and murder of two men and five women in New South Wales between 1989 and 1992. His modus operandi was to approach backpackers along the Hume Highway under the guise of providing them transport to areas of southern New South Wales, then take his victims into the Belanglo State Forest where he would incapacitate and murder them.

Sir Robert Philp, (28 December 1851 – 17 June 1922) was a Queensland businessman and politician who was Premier of Queensland from December 1899 to September 1903 and again from November 1907 to February 1908.

Thor Nis Christiansen (December 28, 1957 – March 30, 1981) was a Danish-American serial killer and necrophile from Solvang, California, who committed the murders of four women in southern California between 1976 and 1979. He committed his first three murders in Isla Vista, which motivated large demonstrations opposed to violence against women and in favor of better transportation for the young people residing in Isla Vista.

Anatoly Yemelianovich Slivko (Russian: Анатолий Емельянович Сливко; 28 December 1938 – 16 September 1989) was a Soviet serial killer and necrophile who sexually assaulted, murdered, and mutilated seven boys in and around Nevinnomyssk, Stavropol Krai, Russian SFSR, between 1964 and 1985. He is also known to have sexually assaulted at least 36 other victims.

Juan Pablo Ledezma (born December 28, 1987), also known as José Luis Fratello, is the alleged current leader of the Mexican gang La Línea, which is the leading armed wing of the Juárez Cartel, and is said to be the current head of the organization.

Shigematsu Sakaibara (酒井原 繁松, Sakaibara Shigematsu; December 28, 1898 – June 19, 1947) was an admiral in the Imperial Japanese Navy, the Japanese garrison commander on Wake Island during World War II, and a convicted war criminal. He was responsible for ordering the Wake Island massacre, in which 98 American civilians were murdered by Japanese soldiers.

Stanley Tookie Williams III (December 29, 1953 – December 13, 2005) was an American gangster who co-founded and led the Crips gang in Los Angeles. He and Raymond Washington formed an alliance in 1971 that established the Crips as Los Angeles' first major African-American street gang.

Syd Dernley (29 December 1920 – 1 November 1994) was appointed assistant executioner by the Home Office in 1949, and participated in 20 hangings until he was replaced in 1954.

Sergei Vasilyevich Ryakhovsky (Russian: Серге́й Васильевич Ряховский; 29 December 1962 – 12 November 2007) was a Soviet-Russian serial killer, convicted for the killing of 19 people in the Moscow area between 1988 and 1993.

Baron Nikolai Robert Maximilian Freiherr von Ungern-Sternberg (Russian: Роман Фёдорович фон Унгерн-Штернберг, romanized: Roman Fyodorovich fon Ungern-Shternberg; 10 January 1886 – 15 September 1921), often referred to as Roman von Ungern-Sternberg or Baron Ungern, was a Russian military leader in the Russian Civil War and then an independent warlord who intervened in Mongolia against China.

Niels Högel (born 30 December 1976) is a German serial killer and former nurse who was sentenced to life imprisonment, initially for the murders of six patients, and later convicted of a total of eighty-five murders. Estimates of Högel's alleged victim count have increased since his first conviction; as of 2020, he was believed to have claimed 300 victims in just over five years, making him the most prolific serial killer in the history of peacetime Germany, and possibly the world.

Pierre Fernand Bodein (born December 30, 1947, in Obernai) is a French criminal and spree killer who, since 1969, has alternated stays between psychiatric hospitals and prisons. Nicknamed "Pierrot le fou" meaning "Pierre the madman", his criminal record includes seven convictions, three of which are murders, including violent rapes.

Hideki Tojo (30 December 1884 – 23 December 1948) was a Japanese military officer and politician who served as Prime Minister of Japan from 1941 to 1944 during World War II. His leadership was marked by widespread state violence and mass killings perpetrated in the name of Japanese nationalism.

Chhota Shakeel (born Mohammed Shakeel Babu Miyan Shaikh; 31 December 1955) is an Indian crime boss and a high-ranking leader of the D-Company, a criminal group based in South Asia. He joined the D-Company in 1988 under the kingpin Dawood Ibrahim, and was reportedly responsible for managing the day-to-day operations of the criminal group.

Pierre-Marie Paoli, also known as Lamote, (31 December 1921 – 15 June 1946) was a French agent in the Gestapo. The Gestapo (Secret State Police) was the official secret police of Nazi Germany and German-occupied Europe.

Anne Hamilton-Byrne (30 December 1921 – 13 June 2019) was an Australian cult leader and yoga teacher, who founded The Family.