Top Religions In World 2025. Lists of the populations of the world’s religions as of 2020 reveal a varied collection of religious traditions old and new, big and small, centrally organized and diffuse. In second position among the world’s most popular religions in 2023 is islam, which accounts for nearly 25 percent of the total population.
The first is folk religions, which collects traditional african religions, chinese folk religions, and both native american and australian aboriginal religions. In fact, the sunni population is par to over 1.5 billion and is almost 300,000 more than the roman catholic.