most populous religions
Here's a listing of the most popular religions worldwide, based on the estimated number of adherents for that religion (or non-religion). 1) Christians - 2,116,909,552 (which includes 1,117,759,185 Roman Catholics, 372,586,395 Protestants, 221,746,920 Orthodox, and 81,865,869 Anglicans) 2) Muslims - 1,282,780,149. 3) Hindus - 856,690,863.