In this article, we will be taking a look at the 20 Most Popular Religions in the World. You can also take a detailed look at the 5 Most Popular Religions in the World.

Religion is an important part of human civilization, shaping cultures, societies, and individuals for millennia. Across the globe, people find solace, meaning, and community in their religious beliefs and practices. From the ancient rituals of Hinduism to the modern teachings of Scientology, the world is adorned with a rich tapestry of spiritual traditions.

Beyond major world religions, a multitude of spiritual paths and traditions enrich the human experience. Sikhism, with approximately 30 million adherents, blends elements of Hinduism and Islam, and emphasizes the principles of equality, service, and devotion to God. Jainism, with around 4.2 million followers, espouses non-violence, truthfulness, and asceticism, seeking liberation (moksha) from the cycle of birth and death.

Moving beyond the boundaries of organized religion, indigenous spiritualities such as African Traditional Religions and Native American religions celebrate the interconnectedness of all life and the sacredness of the natural world. Animism, practiced by millions worldwide, attributes spiritual significance to natural phenomena, animals, and ancestors, fostering harmony, respect, and stewardship for the Earth. When considering the distribution of religious populations globally, it becomes apparent that certain regions exhibit higher levels of religious adherence than others.

With a number of religions found across the globe, it is essential to note how religion plays a significant role in shaping cultural norms and values, which in turn influence economic behaviours and outcomes. Countries with higher levels of religiosity tend to have higher levels of trust and cooperation, which can facilitate more efficient markets and higher levels of economic growth.

For exmaple, a research conducted by economists Robert Putnam and David Campbell in their book “American Grace: How Religion Divides and Unites Us” found a positive correlation between religiosity and levels of trust and cooperation in the United States. They observed that individuals who attend religious services regularly are more likely to engage in civic activities, volunteerism, and charitable giving, indicating higher levels of trust and cooperation within religious communities.

Moreover, religious institutions often serve as important providers of social services, particularly in developing countries where government resources may be limited. For instance, according to research, faith-based organisations provide a substantial proportion of healthcare services in many developing countries, with estimates ranging from 30% to 70%. These services contribute to improving health outcomes and human capital development, which are essential drivers of long-term economic growth.

Religious beliefs can also influence individual behaviors and attitudes towards work, entrepreneurship, and savings, all of which have implications for economic productivity and growth. For instance, research has shown that Protestant work ethic, which emphasizes hard work, discipline, and frugality, is associated with higher levels of economic prosperity. Countries with a Protestant heritage, such as those in Northern Europe and North America, tend to have higher levels of economic development and innovation compared to countries with different religious traditions.

However, as note in another piece, economic growth has a strong positive correlation with secularization, with the latter accounting for 40% of global economic development in the 1990s. Secularization is the depolitisization of religion, with religious institutions having no say at the nation state level. However, we must emphasize that correlation does not imply causation.

On the other hand, a study by J. Callen and X. Fang of the University of Washington, titled Religion and Stock Price Crash Risk, showed that corporations that were headquartered in counties that were relatively more religious than others had lower levels of stock price crash risk because religion helped curb bad-news-hoarding activities. You can read more in the 20 Most Religious Countries in the World.

The Corporate World & Religion

Like economic growth, religious values often manifest in business practices, influencing decision-making processes, organizational culture, and interactions within the corporate world. For instance, individuals may integrate their religious beliefs into their leadership styles, fostering environments that prioritize integrity, compassion, and ethical conduct. The Quaker-founded company, The Hershey Company (NYSE:HSY), exemplifies this with its commitment to ethical sourcing, sustainability, and community development, reflecting Quaker principles of social responsibility and stewardship. For example The Hershey Company (NYSE:HSY)’s Cocoa For Good program, launched in 2018, aims to address the most pressing issues facing cocoa-growing communities, including poverty, child labor, and environmental sustainability. Through Cocoa For Good, The Hershey Company (NYSE:HSY) has pledged to invest $500 million by 2030 to support cocoa-growing communities in West Africa, where the majority of the world’s cocoa is produced. The program focuses on promoting sustainable livelihoods for cocoa farmers, improving access to education and healthcare, and combating child labor and deforestation.

Furthermore, religious values shape corporate philanthropy and social responsibility initiatives, with companies often aligning their charitable giving with the principles and causes supported by their founders’ faith traditions. For instance, the Christian-founded privately owned fast-food chain Chick-fil-A has donated millions of dollars to organisations that promote Christian values, including youth development programs and initiatives supporting traditional family values. Similarly, Islamic financial institutions adhere to Sharia law principles in their banking practices and often prioritize charitable giving to support causes such as poverty alleviation, education, and humanitarian aid.

Let’s now head over to the list of the most popular faiths in the world.

Methodology

To shortlist the 20 Most Popular Religions in the World, we consulted multiple sources like Pew Research, The Register, American Civil Liberties Union, and Statistics & Data Organisation to gain information on the most popular religions in the world and to learn about the number of adherents of these top  20 Most Popular Religions in the World. We mostly relied on the American Civil Liberties Union’s database to determine the number of adherents for all the religions. The list of the 20 Most Popular Religions in the World has been ranked in ascending order – from religions with lesser number of adherents to higher number of adherents.

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20 Most Popular Religions in the World

20. Scientology

No. of Adherents: 0.5 million

Scientology is a relatively new religious movement founded by science fiction writer L. Ron Hubbard in the early 1950s. It incorporates elements of self-help psychology, spirituality, and cosmology. Central to Scientology is the belief in the immortal soul, or “thetan,” which has lived through numerous past lives and can be freed from negative experiences through a process called “auditing.” Auditing involves the use of an electronic device called an E-meter to identify and alleviate spiritual traumas or “engrams.” The religion has been subject to controversy and criticism, including allegations of financial exploitation and aggressive legal tactics against critics. 

19. Rastafari

No. of Adherents: 0.6 million

Rastafari is a spiritual and cultural movement that emerged in Jamaica during the 1930s, inspired by the coronation of Emperor Haile Selassie I of Ethiopia, whom Rastafarians believe to be the messiah or divine incarnation (Jah). Rastafari draws upon elements of Christianity, Pan-Africanism, and Jamaican cultural traditions. 

18. Unitarian Universalism

No. of Adherents: 0.8 million

Unitarian Universalism is a liberal religious movement that emerged in the United States in the early 19th century, formed by the merger of Unitarianism and Universalism. Unitarian Universalists draw upon diverse religious traditions, philosophies, and ethical principles to create a supportive community that encourages spiritual growth, social justice, and environmental stewardship. 

17. Wicca/Neopaganism

No. of Adherents: 1 million

Wicca is a modern pagan religious movement that emerged in the mid-20th century, drawing upon pre-Christian European traditions, folklore, and occult practices. Wiccans worship a diverse pantheon of deities, including a god and goddess representing the divine masculine and feminine energies, and often incorporate rituals, spells, and magical practices into their worship. 

16. Animism

No. of Adherents: 1.9 million

Animism is a worldview and religious belief system that attributes spiritual significance and personhood to natural phenomena, animals, plants, and inanimate objects. Animistic beliefs are found in indigenous cultures around the world and often involve rituals, offerings, and ceremonies to communicate with and honor the spirits or deities believed to inhabit the natural world. 

15. Tenrikyo

No. of Adherents: 2 million

Tenrikyo is a Japanese new religious movement founded in the 19th century by Miki Nakayama, known as Oyasama. It is based on the belief in the “Joyous Life” (Anoyo-no-Ura), a state of spiritual and physical well-being achieved through faith in God, called Tenri-O-no-Mikoto. Tenrikyo teaches the importance of helping others, practicing gratitude, and living in harmony with the natural world. 

14. Zoroastrianism

No. of Adherents: 2.6 million

Zoroastrianism is one of the world’s oldest religions, founded by Zoroaster (Zarathustra) in ancient Persia over 3,000 years ago. It is centered around the belief in Ahura Mazda, the “supreme deity” who embodies truth, righteousness, and order, and the cosmic struggle between good (Asha) and evil (Druj). Key Zoroastrian teachings include the importance of free will, the judgment of souls after death, and the eventual triumph of good over evil. 

13. Cao Dai

No. of Adherents: 4 million

Cao Dai, also known as Caodaism, is a syncretic religion that originated in Vietnam in the early 20th century. It combines elements of various religious traditions, including Buddhism, Taoism, Confucianism, Christianity, and indigenous Vietnamese beliefs. Cao Dai followers worship a supreme deity known as the “Cao Dai” or “Highest Power,” along with other divine beings, saints, and ancestors. 

12. Shinto

No. of Adherents: 4 million

Shinto is the indigenous religion of Japan, rooted in the worship of kami, divine spirits or deities believed to inhabit natural phenomena, objects, and ancestors. Shinto rituals and practices are centered around the veneration of kami, purification rites, and expressions of gratitude for blessings received. Shinto rituals are performed at shrines (jinja) and include offerings, prayers, festivals, and ceremonies to mark important life events and seasonal changes. 

11. Jainism

No. of Adherents: 4.2 million

Jainism is an ancient religion that originated in India over 2,500 years ago, founded by spiritual teachers known as Tirthankaras, the most recent of whom was Mahavira. Jainism emphasizes non-violence (ahimsa), compassion, and the pursuit of spiritual liberation (moksha) through self-discipline and ethical conduct. Jains believe in the existence of eternal souls (jivas) trapped in a cycle of birth, death, and rebirth (samsara), and seek to attain liberation by overcoming attachment, ignorance, and karma. 

10. Bahá’í Faith

No. of Adherents: 5 million

The Bahá’í Faith is a monotheistic religion founded by Bahá’u’lláh in the mid-19th century in Persia (present-day Iran). It emphasizes the unity of all religions and humanity, social justice, and the elimination of prejudice and inequality. Bahá’ís believe in the essential unity of all religions and views them as successive stages in the spiritual evolution of humanity.

9. Judaism

No. of Adherents: 14.7 million

Judaism is one of the oldest monotheistic Abrahamic religions, with roots dating back over 3,000 years to the covenant between God and the patriarch Abraham. Central to Judaism is the belief in one God (Yahweh) who revealed himself to the Jewish people through prophets, including Moses, who received the Torah (the first five books of the Hebrew Bible). 

8. Juche

No. of Adherents: 19 million

Juche is the political ideology that borders on religion. It is advocated in North Korea and has blends of marxism-leninism with local traditions. Critics say it is designed to perpetuate the cult of personality that surrounds the ruling family of the country.

7. Sikhism

No. of Adherents: 26 million

Sikhism is a monotheistic religion founded by Guru Nanak in the late 15th century in the Punjab region of South Asia, which is now divided between India and Pakistan. Sikhs believe in one God, Waheguru, and follow the teachings of the Ten Sikh Gurus, recorded in the Guru Granth Sahib, the Sikh holy scripture. Sikhs are recognizable by their adherence to the Five Ks, which include wearing the Five Kakaars: Kesh (uncut hair), Kara (steel bracelet), Kanga (wooden comb), Kachera (cotton undergarment), and Kirpan (ceremonial dagger). The Sikh community gathers in Gurdwaras for worship, community meals (langar), and religious ceremonies.

6. African Traditional Religions

No. of Adherents: 100 million

African Traditional Religions encompass a diverse array of indigenous beliefs, practices, and rituals across the African continent. These religions are deeply rooted in the cultures, traditions, and spiritual beliefs of various ethnic groups and communities. African Traditional Religions typically involve the worship of ancestral spirits, deities, and natural forces, with rituals and ceremonies performed to maintain harmony with the spirit world and the natural environment. 

Click to continue reading and see the 5 Most Popular Religions in the World.

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Disclosure: none. 20 Most Popular Religions in the World is originally published on Insider Monkey.