Islam is the largest religion in Indonesia, with 86.7% of the Indonesian population identifying themselves as Muslim in a 2018 survey. Indonesia is the most populous Muslim-majority country, with approximately 231 million adherents. In terms of denomination, the overwhelming majority are Sunni Muslims, while 1-3 million are Shia, and are concentrated around Jakarta, and about 400,000 Ahmadi Muslims. In terms of 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 thought within Islam in Indonesia can be broadly categorized into two orientations: "modernism", which closely adheres to orthodox theology while embracing modern learning, and "traditionalism", which tends to follow the interpretations of local religious leaders and religious teachers at Islamic boarding schools.Wikipedia