Islam in Indonesia Islam in Indonesia Islam is the most adhered to religion in Indonesia, with 87.2% of Indonesian population identifying themselves as Muslim in 2010 estimate. Indonesia has the largest Muslim population in the world, with approximately 225 million Muslims. In terms of denomination, absolute majority adheres to Sunni Islam, while there are around one million Shias (0.5%), who are concentrated around Jakarta, and about 400,000 Ahmadi Muslims (0.2%). In terms of Islamic schools of jurisprudence, based on demographic statistics, 99% of Indonesian Muslims mainly follow the Shafi'i school, although when asked, 56% does not adhere to any specific school. Trends of
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