Occult:This month in history/October
- October - The British fleet lays off Esopus Island during the Revolutionary War. (1777)
- 2 October - Future King of England, Richard III is born. (1542)
- 2 October - Author and occultist Arthur Edward Waite is born. (1857)
- 2 October - Jack Parsons, American chemist, occultist, and engineer is born. (1914)
- 4 October - The Gregorian calendar is introduced by Pope Gregory XIII. (1582)
- 4 October - Ritual magician Samuel L. MacGregor Mathers is first initiated into a Masonic lodge. (1877)
- 7 October - The reference date for the origin of the Hebrew calendar. (3761BC)
- 9 October - Reginald Scot, author of The Discoverie of Witchcraft, dies. (1599)
- 11 October - An exorcism for the nuns of Loudun begins during the trail of Urbain Grandier. (1632)
- 12 October - The Salem Witch Trials are ended. (1692)
- 12 October - Author and occultist Aleister Crowley is born. (1875)
- 13 October - Hundreds of the Knights Templar in France are arrested at dawn by King Philip the Fair, and later confess under torture to heresy. (1307)
- 15 October - George Lusk, the chairman of the Whitechapel Vigilance Committee in London, received the "From Hell" letter allegedly from Jack the Ripper. (1888)
- 26 October - Author and astrologer Sybil Leek dies. (1982)
- 27 October - Emperor Constantine is said to have received his famous Vision of the Cross. (312)
- 27 October - Condemned as a heretic, Michael Servetus is burned at the stake just outside Geneva. (1553)
- 29 October - The first trial for witchcraft in Paris results in the death of three people. (1390)
- 29 October - Occultist and author Anton Szandor LaVey dies. (1997)
- 31 October - Peter Stumpp, the Werewolf of Bedburg, is burned along with his mistress and daughter. (1589)
- 31 October - Thiess of Kaltenbrun, the Livonian Werewolf, is condemned to be flogged for heresy. (1692)
- 31 October - The holiday Halloween is celebrated in many countries.