Susan Denise Atkins (May 7, 1948 – September 24, 2009) was an American convicted murderer who was a member of Charles Manson's "Family". Manson's followers committed a series of nine murders at four locations in California over a period of five weeks in the summer of 1969.

Fernando Hernández Leyva (born 30 November 1964) is a Mexican serial killer. He was convicted in 1986 of 33 counts of murder committed in 5 different states of the Mexican union, but he confessed to killing around 100.

This is a list of mass stabbings that took place before 2010. It includes incidents in which there were at least three casualties (killed or injured).

Dmitry Gennadyevich Kazakov (Russian: Дмитрий Геннадьевич Казаков; 7 May 1972 – 9 August 2022) was a Russian serial killer and robber who committed six robbery-murders in Novosibirsk and Tomsk Oblasts between 2009 and 2021.

Dale Devon Scheanette (May 7, 1973 – February 10, 2009), dubbed the Bathtub Killer, was an American serial rapist and murderer involved in two murders and several other rapes in Arlington, Texas. Scheanette first killed elementary school teacher Christine Vu by strangling her in her bathtub on September 17, 1996, and later murdered Wendie Prescott on December 24, 1996.

Marc Paul Alain Dutroux (French: [maʁk pɔl alɛ̃ dytʁu]; born 6 November 1956) is a Belgian convicted serial killer, serial rapist, and child molester. Initially convicted for the abduction and rape of five young girls in 1989, Dutroux was released on parole after just three years' imprisonment.