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 Muslim world The terms Muslim world and Islamic world commonly refer to the unified Islamic community (Ummah), consisting of all those who adhere to the religion of Islam, or to societies where Islam is practiced. In a modern geopolitical sense, these terms refer to countries where Islam is widespread, although there are no agreed criteria for inclusion. Some scholars and commentators have criticised the term "Muslim/Islamic world" and its derivative terms "Muslim/Islamic country" as "simplistic" and "binary", since no state has a religiously homogeneous population (e.g. Egypt's citizens are c. 10% Christian), and in absolute numbers, there are sometimes fewer