Peter Bryan (born 4 October 1969) is a British serial killer with schizophrenia who committed three murders between 1993 and 2004.

John Ellis (4 October 1874 – 20 September 1932) was a British executioner for 23 years, from 1901 to 1924. His other occupations were as a Rochdale hairdresser and newsagent.

Beverly Gail Allitt (born 4 October 1968) is an English serial killer who was convicted of murdering three infants and an 11-year-old boy, and attempting to murder three others, and causing grievous bodily harm to a further six at Grantham and Kesteven Hospital, Lincolnshire, between February and April 1991. She committed the murders as a State Enrolled Nurse on the hospital's children's ward.

Marion Albert Pruett (October 4, 1949 – April 12, 1999) was an American serial killer.

Francisco Félix de Souza (5 October 1754 – 8 May 1849) was a Brazilian slave trader who was deeply influential in the regional politics of pre-colonial West Africa (now Benin, Togo and Nigeria). He founded Afro-Brazilian communities in areas that are now part of those countries and went on to become the "chachá" of Ouidah (the slave-trading hub for the region), a title that conferred no official powers but commanded local respect in the Kingdom of Dahomey, where, after being jailed by King Adandozan of Dahomey, he helped Ghezo ascend the throne in a coup d'état.