Mongolia identifies as a predominantly Buddhist nation, with the 2020 census recording 51.7 percent of the population as Buddhist, 40.6 percent claiming no religion, 3.2 percent following Islam, 2.5 percent practicing shamanism, and 1.3 percent identifying as Christian. These percentages represent recovery from near-complete religious suppression during the Mongolian People's Republic period from 1924 to 1990, when the government closed virtually all monasteries and executed an estimated 17,000 lamas between 1937 and 1939 under Khorloogiin Choibalsan's leadership. The democratic transition beginning in 1990 lifted restrictions on religious practice, leading to monastery reconstruction and revival of both Buddhist and shamanic traditions that had survived clandestinely in rural areas during the socialist decades.
Tibetan Buddhism entered Mongolia in multiple waves, with the most significant conversion occurring in the late 16th century when Altan Khan of the Tümed Mongols met the third Dalai Lama in 1578. The religious leader Zanabazar, born in 1635 as Öndör Gegeen, became the first Jebtsundamba Khutuktu and established Buddhism's institutional framework in what is now Mongolia. He created the Soyombo script in 1686 and founded major monasteries including Shankh Monastery in 1647 and Tövkhön Monastery in 1648 in Övörkhangai Province. The eighth Jebtsundamba Khutuktu became Bogd Khan, Mongolia's theocratic ruler from 1911 until his death in 1924. His title combined political and spiritual authority, residing at what is now the Bogd Khan Palace Museum in Ulaanbaatar, which contains his living quarters and religious artifacts from this period.
Gandan Monastery in Ulaanbaatar, known formally as Gandantegchinlen, survived the purges as the sole functioning monastery during the socialist era, kept open primarily for international delegations to witness religious tolerance. The monastery houses a 26.5-meter gilded statue of Migjid Janraisig, a form of Avalokiteshvara, installed in 1996 to replace an earlier statue melted down in 1937. Approximately 150 monks currently reside at Gandan, conducting daily prayer services at 9:00 and participating in major ceremonies attended by lay Buddhists. The monastery complex includes five temples and multiple dukhang halls where monks perform philosophical debates following the Gelug tradition of Tibetan Buddhism established by Tsongkhapa in the 14th century.
Erdene Zuu Monastery near Kharkhorin, built in 1585 by Abtai Sain Khan using stones from the ruins of Karakorum, represents the oldest surviving Buddhist monastery in Mongolia. The complex originally contained between 60 and 100 temples within walls encompassing 400 square meters, protected by 108 stupas representing Buddhism's 108 sacred texts. Soviet authorities closed it in 1937 and converted portions to a museum in 1947, preserving three temples that display religious art and thangka paintings from the 16th through 19th centuries. Religious services resumed in 1990, with a small monastic community now occupying sections alongside the museum operations. The site functions as both tourist destination and active place of worship, particularly during Tsagaan Sar and Buddha's birthday celebrations.
Daily Buddhist practice for observant Mongolians involves morning offerings of milk or tea at home altars, typically placed on the northern wall facing the door. These altars contain images of Buddha, often alongside photographs of deceased relatives and the Dalai Lama. Practitioners recite mantras, particularly Om Mani Padme Hum, and rotate handheld prayer wheels while circumambulating monasteries clockwise. Urban practitioners visit monasteries on auspicious days determined by the lunar calendar, requesting blessings from lamas or consultations about medical issues, business decisions, or family matters. Lamas perform divinations using dice or observing patterns in offerings, providing guidance interpreted through Buddhist and pre-Buddhist cosmological frameworks.
Shamanism, recorded at 2.5 percent in the 2020 census but likely practiced by additional individuals who identify primarily as Buddhist, predates Buddhism in Mongolia by millennia. Archaeological evidence from the Bronze Age, including deer stones dating to 1400-700 BCE found throughout the Mongolian steppe, suggests ritual practices involving animal sacrifice and sky worship. Contemporary shamanism centers on the relationship between humans, nature spirits, and ancestral souls, with shamans called böö or zaarin serving as intermediaries. Rituals take place at ovoo, cairns of stones and wood built on mountain passes or prominent landscape features where travelers add stones and circle clockwise while requesting safe passage.
The Darkhad valley in Khövsgöl Province maintains particularly strong shamanic traditions, with practitioners performing healing ceremonies, soul retrieval rituals, and divinations throughout the year. Shamans enter trance states through drumming on flat drums called khuur, wearing costumes decorated with metal ornaments, ribbons, and mirrors believed to deflect harmful spirits. The Tsagaan Sar spring ceremony and autumn rituals around October involve animal sacrifice to appease territorial spirits and ensure livestock fertility. Clients consult shamans for illnesses attributed to spiritual causes, soul loss from fright, or conflicts with deceased relatives requiring propitiation. Payment occurs through livestock, money, or food, with fees varying based on ritual complexity and shaman reputation.
Islam came to Mongolia with Kazakh herders who migrated into Bayan-Ölgii Province in western Mongolia during the 18th and 19th centuries. The 2020 census recorded 3.2 percent Muslim population, concentrated almost entirely among ethnic Kazakhs in Bayan-Ölgii and parts of Khovd Province. The town of Ölgii contains several mosques including the main Ölgii Mosque that accommodates Friday prayers for the local community. Kazakhs maintain distinct cultural practices including Muslim burial customs, halal meat preparation, and observation of Ramadan fasting, though geographic isolation and economic constraints affect strict observance. The community operates Islamic schools teaching Quran recitation and Arabic alongside standard Mongolian curriculum.
Christianity entered Mongolia during the Mongol Empire period through Nestorian communities along trade routes, then returned with Russian Orthodox influence in the 19th century and Western missionary activity after 1990. The 2020 census recorded 1.3 percent Christian population, divided among evangelical Protestant denominations, Catholic communities, and small Orthodox congregations. South Korean and American missionary organizations established churches in Ulaanbaatar during the 1990s, attracting converts through English language classes, social services, and humanitarian aid during Mongolia's difficult economic transition. The Catholic Church operates under the Mission sui iuris of Ulaanbaatar established in 2002, with approximately 1,300 registered members as of 2020. Protestant congregations including Baptists, Seventh-day Adventists, and nondenominational evangelical churches number around 40,000 adherents concentrated in Ulaanbaatar and provincial capitals.
Daily life in Mongolia follows patterns shaped by climate, economic structure, and urbanization rather than strictly religious schedules. Approximately 68 percent of Mongolia's 3.3 million people live in urban areas as of 2020, with Ulaanbaatar alone containing roughly 1.6 million residents. Urban workdays run from 9:00 to 18:00 for government offices and 10:00 to 19:00 or 20:00 for shops, with a lunch break between 13:00 and 14:00. The traditional day begins with suutei tsai, milk tea made by boiling water with milk, salt, and occasionally butter, served with bread or boortsog fried pastries. This tea remains constant throughout the day, offered to guests immediately upon arrival and consumed during breaks at work or home.
Diet centers on meat and dairy products reflecting pastoral economy origins, with mutton comprising the primary protein source. Khalkha Mongols and other ethnic groups traditionally consume little vegetables or fruit, obtaining vitamins historically from organ meats, milk products, and wild plants gathered during summer. Urban populations now access imported vegetables year-round from markets, but traditional preferences persist, particularly in rural areas where herding families slaughter livestock in late autumn and preserve meat through freezing in outdoor storage during winter months when temperatures reach minus 40 degrees Celsius. Spring brings increased dairy consumption as sheep, goats, cattle, horses, and yaks begin lactating, producing milk transformed into aaruul dried curds, eezgii cheese, and airag fermented mare's milk.