Religions of the world with the most adherents as reported by the World Christian Database.

Complete List

Ranking	Religion	Adherents	Percent
4	Agnostics	659,899,750	9.6
8	Atheists	137,840,254	2.0
14	Bahai's	7,317,523	0.1
5	Buddhists	463,324,159	6.7
6	Chinese Universists	454,404,544	6.6
1	Christians	2,280,617,633	33.0
15	Confucianists	6,516,424	0.1
7	Ethno-Religionists	269,722,579	3.9
3	Hindus	942,871,012	13.6
16	Jains	5,276,502	0.1
11	Jews	14,824,263	0.2
2	Muslims	1,553,495,902	22.5
9	Neo-Religionists	63,684,375	0.9
17	Shintoists	2,772,185	0.0
10	Sikhs	23,738,289	0.3
12	Spiritists	13,732,783	0.2
13	Taoists	8,429,245	0.1
18	Zoroastrians	198,154	0.0

Source

The data presented in QuickLists are from a variety of sources including the U.S. Census Bureau's International Data Base, the U.S. State Department's International Religious Freedom Report, the United Nations Human Development Reports, and others.

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