In 2010, South Asia had the world's largest population of Hindus,[1] about 510 million Muslims,[1] over 27 million Sikhs, 35 million Christians and over 25 million Buddhists.[2] Hindus make up about 68 percent or about 900 million and Muslims at 31 percent or 510 million of the overall South Asia population,[3] while Buddhists, Jains, Zoroastrians, Sikhs, and Christians constitute most of the rest. The Hindus, Buddhists, Jains, Sikhs, Zoroastrians, and Christians are concentrated in India, Nepal, Sri Lanka and Bhutan, while the Muslims are concentrated in Afghanistan (99%), Bangladesh (91%), Pakistan (96%) and Maldives (100%).[1]
Indian religions (also known as Dharmic religions) are the religions that originated in the Indian subcontinent; namely Hinduism, Jainism, Buddhism and Sikhism.[4] The Indian religions are distinct yet share terminology, concepts, goals and ideas, and from South Asia spread into East Asia and Southeast Asia.[4] Early Christianity and Islam were introduced into coastal regions of South Asia by merchants who settled among the local populations. Later Sindh, Balochistan, and parts of the Punjab region saw conquest by the Arab caliphates along with an influx of Muslims from Persia and Central Asia, which resulted in spread of both Shia and Sunni Islam in parts of northwestern region of South Asia. Subsequently, under the influence of Muslim rulers of the Islamic sultanates and the Mughal Empire, Islam spread in South Asia.[5][6] About one-third of the world's Muslims are from South Asia.[7][8][9]
^ abc"Region: Asia-Pacific". Pew Research Center's Religion & Public Life Project. 2011-01-27. Retrieved 2023-09-07.
^ abAdams, C. J., Classification of religions: GeographicalArchived 14 December 2007 at the Wayback Machine, Encyclopædia Britannica, 2007. Accessed: 15 July 2010; Quote: "Indian religions, including early Buddhism, Hinduism, Jainism, and Sikhism, and sometimes also Theravāda Buddhism and the Hindu- and Buddhist-inspired religions of South and Southeast Asia".
^Alberts, Irving, T., . D. R. M. (2013). Intercultural Exchange in Southeast Asia: History and Society in the Early Modern World (International Library of Historical Studies). I.B. Tauris.