Robert John Maudsley (born 26 June 1953) is an English serial killer. Maudsley first killed a man who showed him pictures of children he had sexually abused.

Yevgeny Olegovich Nagorny (Russian: Евге́ний Оле́гович Наго́рный; born 26 June 1972) is a Ukrainian-born serial killer, who organized a car repair service in which he killed the vehicle owners in order to sell their cars.

Reis Sedat Peker (Turkish: [(re'jis) seˈdat peˈcæɾ]; born 26 June 1971) is a Turkish mafia leader and whistle-blower who has made multiple allegations regarding Turkish politicians and alleged government involvement in illegal activities through his YouTube channel. He identifies himself as a pan-Turkist and Turanist.

Kurt Niklas Lindgren (born 26 June 1972, in Sörmjöle, Umeå Municipality), known in the media prior to his arrest as Hagamannen ("The Haga Man"), is a convicted Swedish serial rapist. Lindgren was convicted of nine counts of sexual assault in 2006, two of which were labeled attempted murder, in relation to attacks in the city of Umeå from 1998 to 2005.

Denis Georges Waxin (born 26 June 1968) is a French serial killer and serial rapist who attacked at least six children in Lille and its suburbs from 1985 to 1999, killing three girls, raping two boys and another girl. He was convicted for his proven crimes and sentenced to life imprisonment with 29 years of preventative detention.

Admiral Sir Thomas Frankland, 5th Baronet (26 June 1718 – 21 November 1784) was a Royal Navy officer, politician and slave trader. He was the second son of Henry Frankland and Mary Cross.

Laurenzius Marie "Lorenz" Hackenholt (26 June 1914 – missing 1945, declared legally dead as of 31 December 1945, but believed to have still been alive) was a member of the Schutzstaffel (SS) with the rank of Hauptscharführer (First Sergeant). During World War II Hackenholt built and operated the gas chamber at the Bełżec extermination camp in occupied Poland during Operation Reinhard.

Willi Kimmritz (26 June 1912 – 26 July 1950), known as The Horror of the Brandenburg Forest (German: Der Schrecken der brandenburgischen Wälder), was a German serial killer, rapist and burglar who robbed and raped women in the forested areas surrounding Berlin from 1946 to 1948, killing four. He was convicted for 13 rapes and three of the murders, sentenced to death and executed in 1950.

Francisco Macías Nguema (born Mez-m Ngueme, later Africanised to Masie Nguema Biyogo Ñegue Ndong; 1 January 1924 – 29 September 1979), often referred to as Macías Nguema or simply Macías, was an Equatoguinean politician who served as the first president of Equatorial Guinea from the country's gaining of independence in 1968, until his overthrow in 1979. He is widely remembered as one of the most brutal dictators in history.