Mikhail Aleksandrovich Neznamov (Russian: Михаил Александрович Незнамов; born 6 February 1979), known as The Kamensk Strangler (Russian: Каменский душитель), is a Russian serial killer who murdered at least five teenage girls and women in Kamensk-Uralsky, Sverdlovsk Oblast from 2000 to 2005. He remained undetected until 2023 when he was arrested and subsequently confessed to the crimes.

Zhou Kehua (simplified Chinese: 周克华; traditional Chinese: 周克華; pinyin: Zhōu Kèhuá; 6 February 1970 – 14 August 2012) was a Chinese arms trafficker and suspected serial killer, believed to be responsible for the Su-Xiang-Yu serial murders (Chinese: 苏湘渝系列持枪杀人抢劫案; lit. 'Jiangsu-Hunan-Chongqing series of murders and armed robberies').

John "Sonny" Franzese Sr. (Italian: [ˈfrantseːze; -eːse]; February 6, 1917 – February 24, 2020) was an American mobster who was a longtime member and former underboss of the Colombo crime family.

Oscar Hans (born 6 February 1910, date of death unknown) was a German war criminal, leader of a SS-Sonderkommando during the occupation of Norway. He was born in Volmeringen, Lorraine, German Empire.

William Gohl (February 6, 1873 – March 3, 1927) was a German-American murderer and suspected serial killer who, while working as a labor union official, murdered several sailors passing through Aberdeen, Washington.

Russell Lee Smith (February 6, 1947 – May 24, 1975) was an American spree killer who killed two people and wounded nine others in Dayton, Ohio, United States on May 24, 1975. He also took two women hostage and raped them before committing suicide.

Nathaniel Gordon (February 6, 1826 – February 21, 1862) was an American slave trader who was the only person in the United States to be tried, convicted, and executed by the federal government for having "engaged in the slave trade", which was deemed an act of piracy when committed by American citizens under the Piracy Law of 1820. As such, Gordon was also the last person to be executed for piracy in the United States.

Louis Buchalter, known as Louis Lepke, Lepke Buchalter or Judge Louie, (February 6, 1897 – March 4, 1944), was a Jewish-American organized crime figure and head of the Mafia hit squad Murder, Inc., during the 1930s. Buchalter was one of the premier labor union racketeers in New York City during that era.

Servando Gómez Martínez (born February 6, 1966), commonly referred to by his alias La Tuta (The Teacher) for once being a teacher, is a Mexican drug lord and former leader of the Knights Templar Cartel, a criminal organization based in the state of Michoacán. He is a former leader and founder member of La Familia Michoacana drug cartel, the split-off group of the Knights Templar.

Ronald Alain Janssen (born February 6, 1971) is a Belgian serial killer who was sentenced to life imprisonment on October 21, 2011, for the murder of three people.

Ronald Wilson Reagan (February 6, 1911 – June 5, 2004) was an American politician and actor who served as the 40th president of the United States from 1981 to 1989. A member of the Republican Party, he became an important figure in the American conservative movement.