Which is the most practiced religion in the world?

Answer 1

The most practiced religion in the world is Christianity. There are about two billion practicing Christians. About half of these are Catholics, and the majority of other Christian faiths include Protestants and Anglicans.

Answer 2

For now it's 1) Christianity , 2) Islam, 3) Hinduism. But research shows that Islam might become number 1 soon sometime in the 21st century.

Answer 3

Christianity. Please note that this includes several branches of Christianity, such as Catholicism, different types of Protestantism, and others.