Islam in southeast asia today islam is the state religion in malaysia and brunei it is the majority religion of indonesia (90) before the 20th c. The ethnic groups of southeast asia comprise many different linguistic stocks. Apart from negrito, which is a physical description, they are here arranged according to the family their languages belong to. Besides indigenous southeast asians, many east asians and south asians call southeast asia their home. The total southeast asian population stands at 655 million (2019). islamic state has professed its intent to expand into southeast asia, while the hundreds of southeast asian isil jihadis (from indonesia, malaysia and cambodia) will cause problems if they return. The recent announcement by al qaeda that it intends to start operations in south asia , including myanmar, should also be a concern for the region. Asia - asia - religion asia is the birthplace of all the worlds major religions and hundreds of minor ones. Like all forms of culture, asian religions may be considered geographically in terms of both their places of origin and their distribution. Hinduism, with a polytheistic and ritual tradition comprising numerous cults and sects, is the oldest of several religions that originated in. Southeast asia is a vast subregion of asia, roughly described as geographically situated east of the indian subcontinent, south of china, and northwest of australia. The region is bounded by the bay of bengal in the west, the indian ocean in the south, the south china sea in the center, and the philippine sea and the pacific ocean in the east. religion is not often discussed in the meetings of the association of southeast asian nations. Its understandable since there is no dominant religion in the region.