The following outline is provided as an overview of and topical guide to religion:

Religion – organized collection of beliefs, cultural systems, and world views that relate humanity to an order of existence. Many religions have narratives, symbols, and sacred histories that are intended to explain the meaning of life and/or to explain the origin of life or the Universe. From their beliefs about the cosmos and human nature, people derive morality, ethics, religious laws or a preferred lifestyle. According to some estimates, there are roughly 4,200 religions in the world.

Religious studies

Religious concepts

Religious belief

Approaches to the beliefs of others

Religious behaviour and experiences

Religion-specific topics

African traditional and diasporic topics

Ayyavazhi topics

Bahá'í Faith topics

Buddhism topics

Cao Dai topics

Christianity topics

Hinduism topics

Islam topics

Jainism topics

Judaism topics

Modern Paganism topics

New Age topics

New religious movement topics

Open source religion topics

Rasta topics

Satanism topics

Shintō topics

Sikhism topics

Spiritism topics

Tenrikyo topics

Unitarian Universalism topics

Zoroastrianism topics

Irreligion topics

Religion and religious ideas in fiction