Marie Fikáčková (9 September 1936 – 13 April 1961) was a Czech suspected serial killer, convicted for the killing of two newborn babies in Sušice in 1960. A neonatal nurse, Fikáčková claimed to have killed at least ten newborns between 1957 and 1960, and was executed by hanging in 1961.

Harrison Frank "Marty" Graham (born September 9, 1959) is an American serial killer who murdered seven women in Philadelphia, Pennsylvania between mid-1986 to mid-1987, keeping their remains in his apartment. In 1988, he was found guilty on all charges and sentenced to death, but his sentences were later commuted to life imprisonment.

Maria Catherina van der Linden-Swanenburg (9 September 1839 – 11 April 1915) was a Dutch serial killer who murdered at least 27 people and was suspected of killing more than 90 people.

Jürgen Wagner (9 September 1901 – 27 June 1947) was a Brigadeführer in the Waffen-SS during World War II, the commander of the SS Division Nederland and was awarded the Knight's Cross of the Iron Cross with Oak Leaves.

Houston Stewart Chamberlain (; 9 September 1855 – 9 January 1927) was a British-German-French philosopher who wrote works about political philosophy and natural science. His writing promoted German ethnonationalism, antisemitism, scientific racism, and Nordicism; he has been described as a "racialist writer".