Top 10 largest religions in the world by followers

Written By: Abhijeet Sen | Updated: May 15, 2026, 11:59 PM

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Here is the top 10 largest religions in the world by followers as per Britannica.

Religion plays a major role in shaping cultures, traditions, and societies across the world. — Religion plays a major role in shaping cultures, traditions, and societies across the world.

Here are the top 10 largest religions and belief systems in the world by followers in 2020.

Rank 1 is Christianity with 2,521,460,000 followers worldwide. — Rank 1 is Christianity with 2,521,460,000 followers worldwide.

Rank 2 is Islam with 1,899,103,000 followers globally.

Rank 3 is Hinduism with 1,090,592,000 followers across various countries. — Rank 3 is Hinduism with 1,090,592,000 followers across various countries.

Rank 4 is Agnosticism with 744,166,000 people identified as agnostic.

Rank 7 is Ethnic or Tribal Religions with 288,022,000 followers, mostly in Africa. — Rank 7 is Ethnic or Tribal Religions with 288,022,000 followers, mostly in Africa.

Rank 8 is Atheism with 147,009,000 people identified as atheist.

Rank 5 is Buddhism with 530,612,000 followers around the world. — Rank 5 is Buddhism with 530,612,000 followers around the world.

Rank 6 is Chinese Folk Religions with 457,672,000 followers mainly in East Asia.

Rank 9 is New Religionists with 67,463,000 followers linked to modern Asian movements. — Rank 9 is New Religionists with 67,463,000 followers linked to modern Asian movements.

Rank 10 is Sikhism with 29,254,000 followers worldwide.

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