Religious traditions fall into super-groups in comparative religion, arranged by historical origin and mutual influence. Abrahamic religions originate in the Middle East, Indian religions in India and Far Eastern religions in East Asia. Another group with supra-regional influence are African diasporic religions, which have their origins in Central and West Africa.

Abrahamic religions are by far the largest group, and these consist primarily of Christianity, Islam and Judaism (sometimes Baha'i is also included). They are named for the patriarch Abraham, and are unified by their strict monotheism. Today, around 3.4 billion people are followers of Abrahamic religions and are spread widely around the world apart from the regions around South-East Asia and China.
Indian religions originated in Greater India and tend to share a number of key concepts, such as dharma and karma. They are of the most influence across the Indian subcontinent, East Asia, South East Asia, as well as isolated parts of Russia. The main Indian religions are Hinduism, Buddhism, Sikhism, and Jainism. Indian religions mutually influenced each other.
Far Eastern religions consist of several East Asian religions which make use of the concept of Tao (in Chinese) or Do (in Japanese or Korean). They include Taoism, Confucianism, Shinto, Chondogyo, Caodaism, and Yiguandao as well as Far Eastern Buddhism (in which the group overlaps with the "Indian" group).
Iranic religions include Zoroastrianism, Yazdanism and historical traditions of Gnosticism (Mandaeanism, Manichaeism). It has significant overlaps with Abrahamic traditions, e.g. in Sufism and in recent syncretic movements such as Babism and Baha'i.
African diasporic religions practiced in the Americas, imported as a result of the Atlantic slave trade of the 16th to 18th centuries, building of traditional religions of Central and West Africa.
Indigenous tribal religions, formerly found on every continent, now marginalized by the major organized faiths, but persisting as undercurrents of folk religion. Includes African traditional religions, Asian Shamanism, Native American religions, Austronesian and Australian Aboriginal traditions and arguably Chinese folk religion (overlaps with Far Eastern religions).
New religious movements, a heterogenous group of religious faiths emerging since the 19th century, often syncretizing, re-interpreting or reviving aspects of older traditions (Baha'i, Hindu revivalism, Ayyavazhi, Pentecostalism, polytheistic reconstructionism), some inspired by science-fiction (UFO religions, Scientology). See List of new religious movements, list of groups referred to as cults.

Groups estimated to exceed 500,000 adherents which are not listed under any of the categories above are the following:
Juche (North Korea): 19 million
Spiritism (not an organized religion): 15 million
Zoroastrianism: 2.6 million
Neopaganism: 1 million
Unitarian-Universalism: 800,000
Rastafarianism: 600,000
Scientology: 500,000