Here are some commonly mentioned secret organizations or conspiracy-related groups:

1. Reptilians ( - Allegedly shape-shifting lizard aliens that rule the world.

2. 骷髅会)Skull and Bones( - A secret society at Yale University

3. Rosicrucians ) - Mystical group

4. Knights Templar ( - Medieval religious military organization

5. The Nine Major Families ) The 13 Bloodlines ( - It is said that they control a family alliance that governs global finance.

6. 罗马俱乐部)Club of Rome( - A think tank organization studying global issues

7. Bilderberg Group)Bilderberg Group( - Annual meeting of high-level political and business elites.

8. 三边委员会)Trilateral Commission( - International policy discussion organization

9. Black Hand)Black Hand( - A Serbian secret organization, later this name was also used for the Italian Mafia.

10. Illuminati )Illuminati of Bavaria( - A secret organization in Bavaria in the 18th century, unlike the modern Illuminati

11. Hermetic Order of the Golden Dawn) - A mystical organization from the late 19th century

12. Prussian Star Chamber ( Vehmic courts ) - Medieval German secret courts

13. Zion Council of Elders (Elders of Zion) - A fictitious organization in anti-Semitic conspiracy theories

14. Priesthood ( Priory of Sion ) - A secret organization allegedly related to the Knights Templar.

15. Black Sun Society( - A mystical organization during Nazi Germany

16. Mithraic Mysteries ) - A secret religious organization during the Roman Empire

17. Scorpion Brotherhood ( Brotherhood of the Snake/Brotherhood of the Serpent ) - A secret organization in ancient Egyptian mythology

18. Bohemian Grove ( - A private gentlemen's club in California, USA

Some of these organizations have disappeared, some still exist, and some are completely fictional. Many conspiracy theories often link these organizations to supernatural forces or world domination plots.