What is the dominant religion in Middle East?

The dominant religion in the Middle East is Islam. Islam is the second-largest religion in the world, with over 1.9 billion followers. More than 90% of the population in the Middle East are Muslims. The Middle East is home to some of the holiest sites in Islam, including the cities of Mecca and Medina in Saudi Arabia, and the Al-Aqsa Mosque in Jerusalem.