What is the most widely practiced religion in the world?

Christianity is the most widely practiced religion in the world, with a significant global presence. As of the latest data, approximately 2.3 billion adherents identify as Christians, which accounts for about 31% of the world’s population. This large number is attributed to Christianity's extensive history, missionary activities, and cultural influences, particularly in the Americas, Europe, and parts of Africa and Asia.

The widespread nature of Christianity is also reflective of its diverse denominations, which include Catholicism, Protestantism, and Eastern Orthodoxy, among others. Each of these groups has its own unique practices and beliefs but shares core tenets regarding the teachings of Jesus Christ.

While Islam is the second-largest religion with about 1.9 billion followers, and Hinduism and Buddhism have substantial followings as well, Christianity remains the most prominent. This ranking highlights the significant cultural and historical impact of Christianity throughout the world, shaping societies and civilizations over centuries.