"Мировые" крупнейшие

Christianity :
Roman Catholicism
Eastern Orthodox Churches это мы :D
Protestantism
Oriental Orthodox and Assyrian Churches
Pentecostals
The Anglican Communion

Чето типо того вроде...

Buddhism
Mahayana Buddhism
Theravada Buddhism
Tibetan Buddhism
Modern Buddhism

Judaism
Humanistic Judaism
Conservative Judaism
Reconstructionist Judaism
Orthodox Judaism
Reform Judaism

Islam
Sunni -> Maliki, Shafi'i, Hanafi, Hanbali .
Shi'a
Kharijites
Ijtihadists


Baha'i Faith

Hinduism

Confucianism

Jainism :
Digambaras
Shvetambaras

Sikhism

Taoism

Vodun (Voodoo)

Neopagan Religious Faiths:

Asatru
Druidism
Goddess Worship
Wicca
Witchcraft



Численность
Christianity: 2.1 billion
Islam: 1.3 billion
Secular/Nonreligious/Agnostic/Atheist: 1.1 billion
Hinduism: 900 million
Chinese traditional religion: 394 million
Buddhism: 376 million
primal-indigenous: 300 million
African Traditional & Diasporic: 100 million
Sikhism: 23 million
Juche: 19 million
Spiritism: 15 million
Judaism: 14 million
Baha'i: 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 thousand
Rastafarianism: 600 thousand
Scientology: 500 thousand