Islam by country 62% of the world's Muslims live in the Asia-Pacific region (from Turkey to Indonesia), with over 1 billion adherents. The largest Muslim population in a country is in Indonesia, a nation home to 12.7% of the world's Muslims, followed by Pakistan (11.0%), and India (10.9%). About 20% of Muslims live in Arab countries. In the Middle East, the non-Arab countries of Iran and Turkey are the largest Muslim-majority countries; in Africa, Egypt and Nigeria have the most populous Muslim communities. The study found more Muslims in the United Kingdom than in Lebanon and more in China than in Syria. Indian
Muslim world was ushered by the colonial powers. The only Muslim-majority regions not to be colonized by the Europeans were Saudi Arabia, Iran, Turkey, and Afghanistan. Turkey was one of the first colonial powers of the world with the Ottoman empire ruling several states for over 6 centuries. Many disputes have occurred within the Muslim community regarding how to manage, organize and administer their respective countries. Because the terms "Muslim world" and "Islamic world" are disputed, since all countries have some non-Muslims and there is not universal agreement on what proportion of the population would be required or if other factors (such