Which is the Biggest Religion in the World in 2021?

Here you will find the biggest religion in the world and further four religions. Religion is an important part of anybody’s life. Religion tells you much more about life on Earth and the afterlife. Religion gives you an identity. People spend their life according to religious statements.

Religion is not bound in one place. A particular religion has its followers all around the world. Collectively population of the followers is represented in this article. Here are 5 biggest religions in the world:



From the total population of the world (7.9 billion), 8% to 10% of people follow this religion. This makes it the fifth-biggest religion in the world.

According to Buddhism, there is no God or deity. They believe in supernatural powers. They believe in some supernatural creatures that enlightened them with the correct path to follow in life.

Yoga is an important part of this religion. Through meditation, they enlightened themselves with the reality of life and with many spiritual aspects.

According to a survey, Buddhism covers 8 to 10% of the world’s population. There are around 470 million followers of Buddhism in the world yet.

Most Buddhists live in China. Other countries like Nepal, India, South Korea, and South Korea has also Buddhist followers.

Lumbini, Nepal is considered to be the home of Buddhism.



Hinduism, fourth-biggest religion in the world. Around 1.35 billion people are followers of Hinduism which makes the 15 to 16% of the world’s population.

Hinduism is an Indian religion. Hinduism is the oldest religion in the world.

Hinduism is a diverse group of philosophers. Brahma, Shiva, Vishnu, Devi, Lakshmi, Krishna, Saraswati are the gods in Hinduism. Brahma is considered to be the biggest god in their religion which is responsible for the creation of the universe.

These 7 are the biggest gods while in Hinduism, Hindus believe in 330 million gods. That’s why this is also called the religion of God and Goddesses.  



Nonreligion is the rejection of any religion and God. They are also known as secular humanists. They don’t believe in any God, deities, or supernatural figure.

They just believe in materialistic things. They completely reject spirituality. Atheism is a diverse group of people that rejects the existence of God.  

With 500 million atheists, Irreligion is the third biggest religion in the world.


Mecca, Kaaba

Islam is the second biggest religion in the world. The followers are known as Muslims. Muslims believe in one God which is Allah and a messenger (Prophet) of Allah, Muhammad ibn Abdullah (PBUH).

There are around 24.1% followers of Islam. Indonesia is the largest Muslim country while Mecca (Makkah in Arabic) is the home of Islam. With 1.9 billion followers, Islam is the second biggest religion.

Muslims follow the order of the Quran (A book Written by Allah containing all the messages to live the life) and the Sunnah Hadith (The practices and Quotes of Prophet Muhammad (PBUH)).

Christianity-Biggest Religion in the world:

Biggest Religion in the world

Christianity is the biggest religion in the world with 31.2% followers from the world’s population. There are around 2.38 billion followers of Christianity.

Catholic Church is the largest Church of Christians. Francis is the pope and the head of the Catholic Church. Vatican City contains 100% of Christians. Vatican City is the smallest country in the world which is also known as the seat of the Catholic Church.

Christians believe in only one God. They believe that God sends Jesus (Son of Allah according to Christianity) to guide and protect the world.

Middle East is known as the home of Christianity.

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Last Updated on November 17, 2022

Soban Nasir
I am a professional Content Writer, author at PostManic, and the founder of TwistPedia. Throughout my work experience, I have recognized the professional way of writing content to attract the audience by ensuring the need and attention. With the proper way of research on a particular topic, I've illuminated my readers with the accurate truth about the topic.

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