Learn how Islam, Christianity and Hinduism are the fastest growing religions globally, with projections and trends for 2025. See the factors, regions and patterns that drive their expansion and diversity. The Future of World Religions : Population Growth Projections, 2010-2050 Why Muslims Are Rising Fastest and the Unaffiliated Are Shrinking as a Share of the World’s Population Note (June 2025): Religious composition estimates in this report are based on 2010 baseline numbers that have since been updated. The Fastest Growing Religions in the World The number of Muslims is expected to rise to 333 million by 2060. For decades, Christianity has remained the largest religious group in the world accounting for 31% of the Earth’s 7.3 billion people. Islam follows at second place accounting for 24% of the global population, with the other 45% of the population identifying as none (16%), Hindus (15%), Buddhists (7%), and Unaffiliated and adherent folk religions (7%). Therefore, as of 2015 ... Religion has always been a significant part of human society, shaping cultures, beliefs, and values across the globe. While some religions have been around for centuries, others are relatively new and rapidly growing in popularity. In this article, we will explore the top 10 fastest - growing religions in the world and the reasons behind their growth. 1. Islam Islam is currently the fastest-growing religion in the world, with over 1.9 billion followers. The growth of Islam can be attributed to ...