The Riau Islands (Indonesian: Kepulauan Riau) is a province of Indonesia.It comprises a total of 1,796 islands scattered between Sumatra, Malay Peninsula, and Borneo including the Riau Archipelago. Situated on one of the world's busiest shipping lanes along the Malacca Strait and the South China Sea (), the province shares water borders with neighboring countries such as …

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 (99%) are Sunni Muslims, while 1-3 million (1%) are Shia, and are concentrated around Jakarta, …