Most Religion In The World List

Religion	Adherents
Christianity[4]	2.2 billion
Islam	1.6 billion
Secular[a]/Nonreligious[b]/Agnostic/Atheist	≤ 1.1 billion
Hinduism	1 billion
Chinese traditional religion[c]	394 million
Buddhism	376 million
Ethnic religions excluding some in separate categories	300 million
African traditional religions	100 million
Sikhism	23 million
Juche[d]	19 million
Spiritism	15 million
Judaism	14 million
Bahá'í	7 million
Jainism	4.2 million
Shinto	4 million
Cao Dai	4 million
Zoroastrianism	2.6 million
Tenrikyo	2 million
Neo-Paganism	1 million
Unitarian Universalism	800,000
Rastafarianism	600,000

List of religious populations

Adherent estimates

Size of Major Religious Groups, 2012
Religion			Percent
Christianity			31.5%
Muslim			23.2%
Unaffiliated			16.3%
Hindu			15.0%
Buddhist *			7.1%
Folk			5.9%
Other			0.8%
Jewish			0.2%
Pew Research Center, 2012[2]

Adherents.com says "Sizes shown are approximate estimates, and are here mainly for the purpose of ordering the groups, not providing a definitive number".^[3]

Notes