# Religion in South Asia

In 2010, South Asia had the world's largest population of Hindus, about 510 million Muslims, over 27 million Sikhs, 35 million Christians and over 25 million Buddhists. Hindus make up about 68 percent or about 900million and Muslims at 31 percent or 510million of the overall South Asia population, 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%).
Indian religions (also known as Dharmic religions) are the religions that originated in the Indian subcontinent; namely Hinduism, Jainism, Buddhism and Sikhism. The Indian religions are distinct yet share terminology, concepts, goals and ideas, and from South Asia spread into East Asia and Southeast Asia. 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. About one-third of the world's Muslims are from South Asia.

## History
### Ancient period

South Asia was primarily Hindu in ancient times. Buddhism appeared around 500 BCE.
Christianity and Islam made an appearance in Kerala during this time period; Saint Thomas is believed to have travelled to Kerala soon after the death of Jesus and converted some people, while the first mosque to be built in India was built during the Islamic prophet Muhammad's lifetime in Kerala. Islam also established itself in Sindh due to Umayyad invasions soon after Muhammad's death.
Some Jews and Zoroastrians came to South Asia because they were fleeing religious persecution.

### Medieval period

Centuries of Islamic invasion and rule over South Asia in the medieval era began to change the religious character of the region. Sufism played a significant role in the spread of Islam during this time. Sikhism emerged in this era, bringing a message of equality and creating military resistance to Muslim rule.
Nepal's formation during this period occurred in part due to the desire of Hindus to avoid being influenced by the dominant Muslim Mughal Empire and British Christian missionaries.

### Colonial era

Religion in British India in the 1871–1872 Census (data includes modern-day India, Bangladesh, most of Pakistan (including Sindh, Punjab, and Balochistan), Kashmir, and coastal Myanmar))
Christianity grew to some extent during the colonial era; the Goa Inquisition committed by the Portuguese helped Catholicism establish itself in Goa, while British missionaries spread Christianity through the rest of India.

### Modern era

Religious tensions increased with the independence of British India, as it was partitioned into a Hindu-majority India and a Muslim-majority Pakistan (which later became Pakistan and Bangladesh), and many died during the creation of the new countries. Tensions further increased with Pakistani terrorist attacks on and Pakistani military conflicts with India.
Religious nationalism has grown in the post-colonial era. Pakistan converted from a secular republic to an Islamic Republic after Independence, while Bangladesh made Islam the state religion (though while maintaining secularism in the Constitution). Hindu nationalism has grown since the 2014 election of the Bharatiya Janata Party (BJP) in India.

## South Asia by religion
### Hinduism

Hinduism is the largest religion in South Asia with about 1.2 billion Hindus, forming just under two-thirds of South Asia's population. South Asia has the largest population of Hindus in the world, with about 99% of all global Hindus being from South Asia. Hinduism is the dominant religion in India and Nepal and is the second-largest religion in Bangladesh, Pakistan, Sri Lanka, and Bhutan.
Indo-Aryan migrations brought the Indo-Aryans to South Asia, where they compiled and composed the Vedic corpus during the Vedic period (ca. 1500-500 BCE) across present-day Northern India, Pakistan and Afghanistan. The subsequent period, between and , was "a turning point between the Vedic religion and Hindu religions", and a formative period for Hinduism, Jainism and Buddhism. The Epic and Early Puranic period, from c. and 500 CE, saw the onset of the Hindu synthesis, followed by the classical "Golden Age" of India, which coincides with the Gupta Empire.

### Islam

Islam is the second-largest religion in South Asia, with more than 650 million Muslims living there, forming about one-third of the region's population. Islam first spread along the coastal regions of the Indian subcontinent and Sri Lanka, almost as soon as it started in the Arabian Peninsula, as the Arab traders brought it to South Asia. South Asia has the largest population of Muslims in the world, with about one-third of all Muslims living here. Islam is the dominant religion in half of the South Asian countries (Pakistan, Maldives, Bangladesh and Afghanistan). It is the second largest religion in India and third largest in Sri Lanka and Nepal.
On the Indian subcontinent, Islam first appeared in the southwestern tip of the peninsula, in today's Kerala state. Arabs traded with Malabar even before the birth of Muhammad. Native legends say that a group of Sahaba, under Malik Ibn Deenar, arrived on the Malabar Coast and preached Islam. According to that legend, the first mosque of India was built by the mandate of the last King of Chera Perumals of Makotai, who accepted Islam and received the name Tajudheen during the lifetime of the Islamic prophet Muhammad (c. 570–632). On a similar note, Malabar Muslims on the western coast also claim that they converted to Islam in Muhammad's lifetime. According to Qissat Shakarwati Farmad, the Masjids at Kodungallur, Kollam, Madayi, Barkur, Mangalore, Kasaragod, Kannur, Dharmadam, Panthalayini, and Chaliyam, were built during the era of Malik Dinar, and they are among the oldest Masjids (mosques) in the Indian Subcontinent. Historicaly, the Barwada Mosque in Ghogha, Gujarat built before 623 CE, Cheraman Juma Mosque (629 CE) in Methala, Kerala and Palaiya Jumma Palli (630 CE) in Kilakarai, Tamil Nadu are three of the first mosques in South Asia.

### Christianity

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Christianity in Asia has its roots in the very inception of Christianity, which originated from the life and teachings of Jesus in 1st-century Roman Judea. Christianity then spread through the missionary work of his apostles, first in the Levant and taking roots in the major cities such as Jerusalem and Antioch. According to tradition, further eastward expansion occurred via the preaching of Thomas the Apostle, who established Christianity in the Parthian Empire (Iran) and India. The very First Ecumenical Council was held in the city of Nicaea in Asia Minor (325). The first nations to adopt Christianity as a state religion were Armenia in 301 and Georgia in 327. By the 4th century, Christianity became the dominant religion in all Asian provinces of the Eastern Roman Empire.
After the First Council of Ephesus in 431 and the Nestorian Schism, the Nestorian Christianity developed. Nestorians began converting Mongols around the 7th century, and Nestorian Christianity was probably introduced into China during the Tang dynasty (618–907). Mongols tended to be tolerant of multiple religions, with several Mongol tribes being primarily Christian, and under the leadership of Genghis Khan's grandson, the great khan Möngke, Christianity was a small religious influence of the Mongol Empire in the 13th century.
The Fourth Ecumenical Council was held in Asian city of Chalcedon (451). Christological controversies and disputes that surrounded the Council and its aftermath gradually resulted in division between pro-Chalcedonian (Eastern Orthodox) and anti-Chalcedonian (Oriental Orthodox) Christianity.
At the late 12th and 13th centuries, there was some effort to reunite Eastern and Western Christianity. There were also numerous missionary efforts from Europe to Asia, primarily by Franciscan, Dominican, or Jesuit missionaries. In the 16th century, Spain began to convert Filipinos. In the 18th century, Catholicism developed more or less independently in Korea.
At present, Christianity continues to be the majority religion in the Philippines, East Timor, Armenia, Georgia, Cyprus and Russia. It has significant minority populations in South Korea, Taiwan, China, India, Pakistan, Iran, Indonesia, Vietnam, Singapore, Hong Kong, Japan, Malaysia, Kazakhstan, Kyrgyzstan, Israel, Palestine (including the West Bank and the Gaza Strip), Lebanon, Syria, Iraq, Jordan, and several other countries in Asia with a total Christian population of more than 295 million.

### Sikhism

Sikhism ( ) also known as Sikhi, is an Indian religion and philosophy that originated in the Punjab region of the Indian subcontinent around the end of the 15th century CE. It is one of the most recently founded major religions and among the largest in the world with about 25–30million adherents, known as Sikhs.
Sikhism developed from the spiritual teachings of Guru Nanak (1469–1539), the faith's first guru, and the nine Sikh gurus who succeeded him. The tenth guru, Guru Gobind Singh (1666–1708), named the Guru Granth Sahib, which is the central religious scripture in Sikhism, as his successor. This brought the line of human gurus to a close. Sikhs regard the Guru Granth Sahib as the 11th and eternally living guru.
The core beliefs and practices of Sikhism, articulated in the Guru Granth Sahib and other Sikh scriptures, include faith and meditation in the name of the one creator (Ik Onkar), the divine unity and equality of all humankind, engaging in selfless service to others (sevā), striving for justice for the benefit and prosperity of all (sarbat da bhala), and honest conduct and livelihood. Following this standard, Sikhism rejects claims that any particular religious tradition has a monopoly on absolute truth. As a consequence, Sikhs do not actively proselytize, although voluntary converts are generally accepted. Sikhism emphasizes meditation and remembrance as a means to feel God's presence (simran), which can be expressed musically through kirtan or internally through naam japna. Baptised Sikhs are obliged to wear the five Ks, which are five articles of faith which physically distinguish Sikhs from non-Sikhs. Among these include the kesh (uncut hair). Most religious Sikh men thus do not cut their hair but rather wear a turban.

### Buddhism

Buddhism is an ancient Indian religion, which arose in and around the ancient Kingdom of Magadha (now in Bihar, India). It is based on the teachings of Gautama Buddha, who lived in the 6th or 5th century BCE and was deemed a "Buddha" ("Awakened One"). However, Buddhist doctrine holds that there were other Buddhas before him. Buddhism spread outside of Magadha starting in the Buddha's lifetime.
During the reign of the Mauryan Emperor Ashoka, the Buddhist community split into two branches: the Mahāsāṃghika and the Sthaviravāda, each of which spread throughout India and split into numerous sub-sects. In modern times, two major branches of Buddhism exist: the Theravada in Sri Lanka and Southeast Asia, and the Mahayana throughout the Himalayas and East Asia. The Buddhist tradition of Vajrayana is sometimes classified as a part of Mahayana Buddhism, but some scholars consider it to be a different branch altogether.

### Jainism

Jainism ( ), also known as Jain Dharma, is an Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of dharma), with the first in the current time cycle being Rishabhadeva, whom the tradition holds to have lived millions of years ago, the twenty-third tirthankara Parshvanatha, traditionally dated to the 9th century BCE, and the twenty-fourth tirthankara Mahavira, historically around the 6th or 5th BCE. Jainism is considered an eternal dharma with the tirthankaras guiding every time cycle of the cosmology. Central to understanding Jain philosophy is the concept of bhedavijñāna, or the clear distinction in the nature of the soul and non-soul entities. This principle underscores the innate purity and potential for liberation within every soul, distinct from the physical and mental elements that bind it to the cycle of birth and rebirth. Recognizing and internalizing this separation is essential for spiritual progress and the attainment of samyaka darśana or self realization, which marks the beginning of the aspirant's journey towards liberation. The three main pillars of Jainism are ahiṃsā (non-violence), anekāntavāda (non-absolutism), and aparigraha (asceticism).
Jain monks take five main vows: ahiṃsā (non-violence), satya (truth), asteya (not stealing), brahmacharya (chastity), and aparigraha (non-possessiveness). These principles have affected Jain culture in many ways, such as leading to a predominantly lacto-vegetarian lifestyle. Parasparopagraho jīvānām (the function of souls is to help one another) is the faith's motto, and the Namokar Mantra is its most common and strongest prayer.

### Zoroastrianism

Zoroastrianism ( ), also called Mazdayasnā or Beh-dīn, is an Iranian religion centred on the Avesta and the teachings of Zarathushtra Spitama, who is more commonly referred to by the name Zoroaster ( ). Among the world's oldest organized faiths, its adherents exalt an uncreated, benevolent, and all-wise deity known as Ahura Mazda, who is hailed as the supreme being of the universe. Opposed to Ahura Mazda is Angra Mainyu, who is personified as a destructive spirit and the adversary of all things that are good. As such, the Zoroastrian religion combines a dualistic cosmology of good and evil with an eschatological outlook predicting the ultimate triumph of Ahura Mazda over evil. Opinions vary among scholars as to whether Zoroastrianism is monotheistic, polytheistic, henotheistic, or a combination of all three. Zoroastrianism shaped Iranian culture and history, while scholars differ on whether it significantly influenced ancient Western philosophy and the Abrahamic religions, or gradually reconciled with other religions and traditions, such as Christianity and Islam.
Originating from Zoroaster's reforms of the ancient Iranian religion, Zoroastrianism began during the Avestan period (possibly as early as the 2nd millennium BCE), but was first recorded in the mid-6th century BCE. For the following millennium, it was the official religion of successive Iranian polities, beginning with the Achaemenid Empire, which formalized and institutionalized many of its tenets and rituals, and ending with the Sasanian Empire, which revitalized the faith and standardized its teachings. In the 7th century CE, the rise of Islam and the ensuing Muslim conquest of Iran marked the beginning of the decline of Zoroastrianism. The persecution of Zoroastrians by the early Muslims in the nascent Rashidun Caliphate prompted much of the community to migrate to the Indian subcontinent, where they were granted asylum and became the progenitors of today's Parsis. Once numbering in the millions, the world's total Zoroastrian population is estimated to comprise between 100,000 and 200,000 people as of 2024. Most Zoroastrians reside either in India (50,000–60,000), in Iran (15,000–25,000), or in North America (22,000). The religion is thought to be declining due to restrictions on conversion, strict endogamy, and low birth rates.
The central beliefs and practices of Zoroastrianism are contained in the Avesta, a compendium of sacred texts assembled over several centuries. Its oldest and most central component are the Gathas, purported to be the direct teachings of Zoroaster and his account of conversations with Ahura Mazda. These writings are part of a major section of the Avesta called the Yasna, which forms the core of Zoroastrian liturgy. Zoroaster's religious philosophy divided the early Iranian gods of Proto-Indo-Iranian paganism into emanations of the natural world—the ahura and the daeva; the former class consisting of divinities to be revered and the latter class consisting of divinities to be rejected and condemned. Zoroaster proclaimed that Ahura Mazda was the supreme creator and sustaining force of the universe, working in gētīg (the visible material realm) and mēnōg (the invisible spiritual and mental realm) through the Amesha Spenta, a class of seven divine entities that represent various aspects of the universe and the highest moral good. Emanating from Ahura Mazda is Spenta Mainyu (the Holy or Bountiful Spirit), the source of life and goodness, which is opposed by Angra Mainyu (the Destructive or Opposing Spirit), who is born from Aka Manah (evil thought). Angra Mainyu was further developed by Middle Persian literature into Ahriman, Ahura Mazda's direct adversary.

## Religion in South Asian countries

| Country | State religion | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population | Religious population as a percentage of total population |
| Country | State religion | Buddhism | Christianity | Hinduism | Islam | Kiratism | Sikhism | Others | Year reported |
| Afghanistan | Islam | – | – | – | 99.7% | – | – | 0.3% | 2019 |
| Bangladesh | Islam | 0.6% | 0.4% | 9.5% | 90.4% | – | – | – | 2011 |
| Bhutan | Vajrayana Buddhism | 74.8% | 0.5% | 22.6% | 0.1% | – | – | 2% | 2010 |
| India | Hinduism | 0.7% | 2.3% | 79.8% | 14.2% | – | 1.7% | 1.3% | 2011 |
| Maldives | Sunni Islam | – | – | – | 100% | – | – | – | |
| Nepal | Hinduism | 9% | 1.3% | 81.3% | 4.4% | 3% | – | 0.8% | 2013 |
| Pakistan | Islam | – | 1.59% | 1.85% | 96.28% | – | – | 0.07% | 2010 |
| Sri Lanka | Theravada Buddhism | 70.2% | 6.2% | 12.6% | 9.7% | – | – | 1.4% | 2011 |

### Afghanistan

Religion in Afghanistan (2012) :
| religion | religion | percent | percent |
| Sunni Islam | Sunni Islam | 90% | 90% |
| Shia Islam | Shia Islam | 9.7% | 9.7% |
| Other religion | Other religion | 0.3% | 0.3% |
Religion in Afghanistan (2012)

### Sri Lanka
## Caste system

A caste is a fixed social group into which an individual is born within a particular system of social stratification: a caste system. Within such a system, individuals are expected to marry exclusively within the same caste (endogamy), follow lifestyles often linked to a particular occupation, hold a ritual status observed within a hierarchy, and interact with others based on cultural notions of exclusion, with certain castes considered as either more pure or more polluted than others. The term "caste" is also applied to morphological groupings in eusocial insects such as ants, bees, and termites.

### Hindu caste system

The caste system in India is the paradigmatic ethnographic instance of social classification based on castes. It has its origins in ancient India, and was transformed by various ruling elites in medieval, early-modern, and modern India, especially in the aftermath of the collapse of the Mughal Empire and the establishment of the British Raj.

### Social stratification among Muslims

Muslim communities in South Asia have a system of social stratification arising from concepts other than "pure" and "impure", which are integral to the caste system in India. It developed as a result of relations among foreign conquerors, local upper-caste Hindus convert to Islam (ashraf, also known as tabqa-i ashrafiyya) and local lower-caste converts (ajlaf), as well as the continuation of the Indian caste system by converts. Non-ashrafs are backward-caste converts. The concept of "pasmanda" includes ajlaf and arzal Muslims; ajlaf status is defined by descent from converts to Islam and by pesha (profession). These terms are not part of the sociological vocabulary in regions such as Kashmir and Uttar Pradesh, and say little about the functioning of Muslim society.

## Religious nationalism
### Hindu nationalism

Hindutva (/hɪnˈdʊtvə/; lit. 'Hindu-ness') is a political ideology encompassing the cultural justification of Hindu nationalism and the belief in establishing Hindu hegemony within India. The political ideology was formulated by Vinayak Damodar Savarkar in 1922. It is used by the Rashtriya Swayamsevak Sangh (RSS), the Vishva Hindu Parishad (VHP), the current ruling Bharatiya Janata Party (BJP), and other organisations, collectively called the Sangh Parivar.
Inspired by European fascism, the Hindutva movement has been variously described as a variant of right-wing extremism, as "almost fascist in the classical sense", adhering to a concept of homogenised majority and cultural hegemony and as a separatist ideology. Some analysts dispute the identification of Hindutva with fascism and suggest that Hindutva is an extreme form of conservatism or ethno-nationalism.

### Sikh nationalism

The Khalistan movement is a separatist movement seeking to create a homeland for Sikhs by establishing an ethno-religious sovereign state called Khalistan (lit. 'land of the Khalsa') in the Punjab region. The proposed boundaries of Khalistan vary between different groups; some suggest the entirety of the Sikh-majority Indian state of Punjab, while larger claims include Pakistani Punjab and other parts of North India such as Chandigarh, Haryana, and Himachal Pradesh. Shimla and Lahore have been proposed as the capital of Khalistan.
The call for a separate Sikh state began during the 1930s, when British rule in India was nearing its end. In 1940, the first explicit call for Khalistan was made in a pamphlet titled "Khalistan". With financial and political support from the Sikh diaspora, the movement flourished in the Indian state of Punjab – which has a Sikh-majority population – continuing through the 1970s and 1980s, and reaching its zenith in the late 1980s. The Sikh separatist leader Jagjit Singh Chohan said that during his talks with Zulfikar Ali Bhutto, the latter affirmed his support for the Khalistan movement in retaliation for the 1971 Indo-Pakistan war, which resulted in the secession of Bangladesh from Pakistan.
The separatist insurgency in Punjab started in the early 1980s. Several Khalistani groups were involved in the armed insurgency, including Babbar Khalsa and Khalistan Commando Force, among others. In 1986, Khalistan Commando Force took responsibility for the assassination of General Arun Vaidya, in retaliation for 1984's Operation Blue Star. By the mid-1990s, the insurgency petered out, with the last major incident being the assassination of Chief Minister Beant Singh, who was killed in a bomb blast by a member of Babbar Khalsa. The movement failed to reach its objective for multiple reasons, including violent police crackdowns on separatists, factional infighting, and disillusionment from the Sikh population.