Occult:This month in history/September
- 10 September - New Orleans voodoo practitioner Marie Laveau is born. (1801)
- 11 September - At age 13, Frederick Santee becomes the youngest person to attend Harvard University. (1920)
- 12 September - Astrologer Simon Forman dies. (1611)
- 14 September - Occultist and author Heinrich Cornelius Agrippa is born. (1486)
- 14 September - Occult publishing company Bloodstone Studios is founded in Los Angeles, California. (2018)
- 15 September - Congolese soldier and tribal leader, Ngongo Lutete, is executed for treason. (1893)
- 18 September - Aleister Crowley performs a "suicide stunt" in Lisbon, Portugal with Fernando Pessoa. (1930)
- 18 September - Artist Pamela Colman Smith dies. (1951)
- 20 September - Australian cannibal Alexander Pearce escapes from prison. (1824)
- 24 September - Austrian painter Christoph Haizmann signs a diabolical pact with Satan. (1668)
- 29 September - Michael Servetus is born. (1509/1511)
- 30 September - Jack the Ripper kills his third and fourth victims. (1888)