Major Religions of the World
Ranked by Number of Adherents

1. Christianity: 2.1 billion
   
2. Islam: 1.5 billion
   
3. Secular/Nonreligious/Agnostic/Atheist: 1.1 billion
   
4. Hinduism: 900 million
   
5. Chinese traditional religion: 394 million
   
6. Buddhism: 376 million
   
7. primal-indigenous: 300 million
   
8. African Traditional & Diasporic: 100 million
   
9. Sikhism: 23 million
   
10. Juche: 19 million
    
11. Spiritism: 15 million
    
12. Judaism: 14 million
    
13. Baha'i: 7 million
    
14. Jainism: 4.2 million
    
15. Shinto: 4 million
    
16. Cao Dai: 4 million
    
17. Zoroastrianism: 2.6 million
    
18. Tenrikyo: 2 million
    
19. Neo-Paganism: 1 million
    
20. Unitarian-Universalism: 800 thousand
    
21. Rastafarianism: 600 thousand
    
22. Scientology: 500 thousand