Most Popular Religion in the World
Religion has many different definitions and people often philosophize over the many definitions on a daily basis. While there are quite a few major religions there is only one most popular religion in the world.
Christianity, Islam, Hinduism and Buddhism are the most popular world religions today. Approximately 1 billion people adhere to irreligious beliefs which include humanism, atheism and agnosticism, making this category of beliefs more popular than Hinduism but less popular than Islam.

Christianity is the most popular religion in the world with about 2.1 billion adherents as of 2005. The most popular religion only comprised around 33% of the total world population. Christianity considered as such a group includes differing denominations such as Roman Catholics, Southern Baptists, and Mormons.
In ranking religious denominations, the Roman Catholic Church is the most popular denomination within Christianity.
April 6th, 2007 at 1:49 am
Praise the Lord
April 22nd, 2007 at 4:46 am
Amen
April 23rd, 2007 at 10:58 am
Mormons are not christians!!!!! In Revalation 22 it says if any one takes away or adds anything to the bible they will be taken out of the Lambs Book of Life. Mormons took away the words of God out of his own book! That to me is disrespectful and wrong. Therfore, you should no count mormons as christains becasue christains are “Christ like”, well at least TRUE Christains are. And if your really did count all the TRUE Christains i think you would be suprised.
October 2nd, 2007 at 12:50 pm
well mormons are like us all. i dont bealive in a denomination i am free and i listen only Bible and noone else.
November 7th, 2007 at 2:51 pm
amen PRAISE THE LORD!!!!
August 14th, 2008 at 2:12 am
Hi
Thanks for everything you given to US.
Amen….
Improve your people more and more.
All–
Dont mind which denomination you are.
believe in Christ and believe the word of god.
Regards
Sunil
September 29th, 2008 at 6:05 pm
If in Revalation 22 it says if any one takes away or adds anything to the bible they will be taken out of the Lambs Book of Life, than none of you are Christians. Do you realize how many times the Bible has been re-written, translated, and CHANGED throughout the course of history? Some kings, and churches added entire sections to send messages to people at the time. So if you say taking or adding to the bible makes you not a christian, and if you follow the Bible, than are you still a christian? Mormons are not the only people that have ‘taken and added’.
November 24th, 2008 at 10:28 am
Alicia, are you a Christian? You just said “IF in Revelations 22 it says…” when it obviously DOES say that. And that is so out of context. Translating and adapting is not the same thing as changing the actual CONTENT. And that’s what the Bible is referring to.
But yes, you’re right, Mormons aren’t the only ones who do that. Jehovah’s Witnesses do the exact same thing. Neither of them are “Christians”, if the term is taken to mean “going to Heaven.” They’re just going straight down the road to Hell. “Christian” is just a man-made term anyway, as the Bible never refers to Jesus’ followers as Christians.
November 27th, 2008 at 12:09 am
When it was originally written, the Bible did not exist as one single book, but rather was a collection of books. The scripture at the end of the book of Revelation, which suggests that nothing should be added, is only referring to that book (the book of Revelation), not the entire Bible. The Bible did not even exist as a single book until centuries after Christ’s death. In fact, most scholars agree that Revelation was not the last book in the Bible to be written. Should we throw out the other books in the New Testament that were written after Revelation, then?
Additionally, there is a scripture in Deuteronomy (12:32) which also says nothing should be added. Using this same logic, we should throw out the entire New Testament and much of the Old!
That is, of course, an absurd argument.
December 5th, 2008 at 1:58 am
Islam is currently at an estimated %20-25. And is the fastest growing religion in the world today.
If current trends continue, Islam will be the most popular religion before we reach the middle of the 21st century.
Do not judge Islam by what few muslims do.
Example: You don’t judge all Christians by the Oklahoma City bombings.
Mohammed is the last of a series of prophets, that included Jesus – peace be upon him. He is the last prophet to emerge from Becca (Mecca), as can be seen in authentic copies of the old testament.
Do you honestly believe that God was somehow conceived and delivered by a woman? Do you believe that God is somehow split in a confusing trinity? Use your heart and instinct to realize that the almighty is ONE, and he had no sons, daughters or siblings.
May we all find guidance.
March 22nd, 2009 at 9:39 pm
Hey,
You forgot Sikhs. They are also in the top 5. Just sayin
April 7th, 2009 at 10:36 am
Part of the Christianity is the Eastern Orthodox Christians the only followers of the original Christian faith, before the Schism that split the Church to Orthodoxes and Catholics.
May the power of God be with you.
Amen
April 23rd, 2009 at 8:48 pm
I’m just glad non-religion is growing so rapidly.. People are starting to look at the real world..not the world through the eyes of lies, deceit, and the hatred of other humans based off religion or religious teachings.
April 26th, 2009 at 6:04 pm
Well, if I can just jump in on this Mormon conversation, I believe Mormons are Christans. They believe in Christ and follow the exact teachings of the Bible. They believe in a new testament of Chirst which does not contradict the Bible, in fact goes along with its teachings. I think that maybe you should investigate the religion some more instead of just judging it right off the bat. If I can recall correctly, judging does not go along with the Chirstan religion.
April 28th, 2009 at 6:03 pm
Wow Corlton, read what you just wrote and tell me that didn’t sound hateful.
May 5th, 2009 at 6:05 pm
To once again bring up this Mormon ‘debate’ I suppose you could call it. I believe that as long as you believe in Jesus, you are a Christian. So what if they change a few words here and there? They’re still preaching the Jesus/God exists, aren’t they? Same goes with whatever religion you choose, if you have faith, who cares what religion those religious.. folk categorize you into?
Colton, I agree with you wholeheartedly. It angers me greatly when people try to shove their own religion down your throat and tell you it’s the right one
May 19th, 2009 at 8:26 pm
so Elizabeth are you say that catholics arnt christans either?
July 1st, 2009 at 6:37 am
i think islam is supposed 2 be the most popular religion
August 7th, 2009 at 3:54 pm
I would take issue with the designation “most popular” religion. Religion isn’t like buying a new car. It’s generally not even much of a choice, as the vast majority of people around the world accept or find reasonable the beliefs of their parents and society. If that weren’t true, we wouldn’t have such a heavy concentration of, say, Muslims in the Middle East.
September 9th, 2009 at 1:43 am
Mormons did not add the messages of the Bible..otherwise Joseph Smith translate the book of LDS,which is the book of mormon,or the golden plates given by Jesus Christ.