Major Religions of the World

Major Religions of the World
Ranked by Number of Adherents

(Sizes shown are approximate estimates, and are here mainly for the purpose of ordering the groups, not providing a definitive number. This list is sociological/statistical in perspective.)

1. Christianity: 2.1 billion
2. Islam: 1.3 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

I am surprised Shinto is so small.

What is neo-paganism?

Selfactivated, I believe that neo-paganism is what they call the ancient Pagan religions that used to be forgotten, but are practised now again. Unless I am very much mistaken, Wicca is also referred to as a neo-pagan religion.