When you ask a layman on the street to name the religions he knows, the two that would immediately pop out of his mount would be Christianity, and Islam. After which he would go, 'Ehhhhh' and look up in the sky like the answer would drop from the clouds. Most people don't know that there are more than a dozen religions in the world, and Christianity and Islam put together represent only half the religions of the 7.5 billion people on Earth. I have put together this article to shed some light on some of the other religions of the world. So, below is the top 6 religions of the world, with size (population) as the criteria.