The wide variety of peoples inhabiting Georgia has meant a correspondingly rich array of active religions. Today most of the population in Georgia practices Orthodox Christianity, primarily in the Georgian Orthodox Church whose faithful make up 82.4% of the population. Around 1% belong to the Russian Orthodox Church, while about 2.9% of the population follow the Armenian Apostolic Church (Oriental Orthodoxy), almost all of which are ethnic Armenians. Adherents of Islam make up 10.7% of the population and are mainly found in the Adjara and Kvemo Kartli regions and as a sizeable minority in Tbilisi. Catholics of the Armenian and Latin churches make up around 0.8% of the population and are mainly found in the south of Georgia and a small number in Tbilisi. There is also a sizeable Jewish community in Tbilisi served by two synagogues.
The Georgian Apostolic Autocephalous Orthodox Church is one of the world's most ancient Christian Churches, founded in the 1st century by the Apostle Andrew the First Called. In the first half of the 4th century Christianity was adopted as the state religion. This has provided a strong sense of national identity that has helped to preserve a national Georgian identity, despite repeated periods of foreign occupation and attempted assimilation.
Georgia has a long history of religious harmony within its borders despite the historical conflicts with the surrounding nations. Different religious minorities have lived in Georgia for thousands of years and religious discrimination is virtually unknown in the country. Jewish communities exist throughout the country, with major concentrations in the two largest cities, Tbilisi and Kutaisi. Azerbaijani groups have practiced Islam in Georgia for centuries, as have Adjarians and some of the Abkhazians concentrated in their respective autonomous republics. The Armenian Apostolic Church, whose doctrine differs in some ways from that of Georgian Orthodoxy, has autocephalous status.
The country has a total area of approximately 25,900 square miles (67,100 km²), and a population (as of 2014) of 3.7 million people.
According to a 2014 census, 83.4% of the Georgian population identified themselves as Eastern Orthodox Christian, 10.7% Muslim, 2.9% Armenian Apostolic, and 0.5% Catholic. Orthodox churches serving other non-Georgian ethnic groups, such as Russians and Greeks, are subordinate to the Georgian Orthodox Church. Non-Georgian Orthodox Churches generally use the language of their communicants.
In addition, there are a small number of mostly ethnic Russian believers from two dissenter Christian movements: the ultra-Orthodox Old Believers, and the Spiritual Christians (the Molokans and the Doukhobors). The majority of these groups have left the country since the mid-1980s.
Under Soviet rule (1921-1990), the number of active churches and priests declined sharply and religious education became nearly nonexistent. Membership in the Georgian Orthodox Church has increased markedly since independence in 1991. The church maintains 4 theological seminaries, 2 academies, several schools, and 27 church dioceses; it has 700 priests, 250 monks, and 150 nuns. The Catholicos-Patriarch of All Georgia, Ilia II, with his seat in Tbilisi, heads the Church.
Several religions, including the Armenian Apostolic Church, the Catholic Church, Judaism, and Islam, traditionally have coexisted with Georgian Orthodoxy. A large number of Armenians live in the southern Javakheti region, in which they constitute a majority of the population. Islam is prevalent among Azerbaijani and north Caucasus ethnic communities in the eastern part of the country and also is found in the regions of Adjara and Abkhazia.
Judaism, which has been present since ancient times, is practiced in a number of communities throughout the country, especially in the largest cities, Tbilisi and Kutaisi. Approximately 8,000 Jews remain in the country, following two large waves of emigration, the first in the early 1970s and the second in the period of perestroika during the late 1980s. Before then, Jewish officials estimate, Georgia had as many as 100,000 Jews. There also are small numbers of Lutheran worshippers, mostly among descendants of German communities that first settled in the country from 1817. A small number of the ethno-religious group of the Yezidis have lived in the country for centuries.
Since the collapse of the Soviet Union (1991), Protestant denominations have become more prominent. They include Baptists (composed of Russian, Georgian, Armenian, Ossetian, and Kurdish groups); Seventh-day Adventists; Pentecostals (both Georgian and Russian); the New Apostolic Church; and the Assemblies of God. There also are a few Bahá'ís, Hare Krishnas and Jehovah's Witnesses (local representatives state that the group has been in the country since 1953 and has about 15,000 adherents). There are no available membership numbers for these groups but, combined, their membership most likely[original research?] totals fewer than 100,000 persons.
According to Orthodox tradition, Christianity was first preached in Georgia by the Apostles Simon and Andrew in the 1st century. It became the state religion of Kartli (Iberia) in 337. The conversion of Kartli to Christianity is credited to St. Nino of Cappadocia. The Georgian Orthodox Church, originally part of the Church of Antioch, gained its autocephaly and developed its doctrinal specificity progressively between the 5th and 10th centuries. The Bible was also translated into Georgian in the 5th century, as the Georgian alphabet was developed for that purpose. As was true elsewhere, the Christian church in Georgia was crucial to the development of a written language, and most of the earliest written works were religious texts. From the first centuries C.E., the cult of Mithras, pagan beliefs, and Zoroastrianism were commonly practiced in Georgia.
Christianity gradually replaced all the former religions except Zoroastrianism, which became somewhat of a second established religion in Iberia after the Peace of Acilisene in 378, which placed Georgians permanently on the front line of conflict between the Islamic and Christian worlds. Georgians remained mostly Christian despite repeated invasions by Muslim powers, and long episodes of foreign domination. After Georgia was annexed by the Russian Empire, the Russian Orthodox Church took over the Georgian church in 1811.
The Georgian church regained its autocephaly only when Russian rule ended in 1917. The Soviet regime that ruled Georgia from 1921 did not consider revitalization of the Georgian church an important goal, however. Soviet rule brought severe purges of the Georgian church hierarchy and frequent repression of Orthodox worship. As elsewhere in the Soviet Union, many churches were destroyed or converted into secular buildings. This history of repression encouraged the incorporation of religious identity into the strong nationalist movement and the quest of Georgians for religious expression outside the official, government-controlled church. In the late 1960s and early 1970s, opposition leaders, especially Zviad Gamsakhurdia, criticized corruption in the church hierarchy. After Ilia II became the patriarch (catholicos) of the Georgian Orthodox Church in the late 1970s, Georgian Orthodoxy experienced a revival. In 1988 Moscow permitted the patriarch to begin consecrating and reopening closed churches, and a large-scale restoration process began. The Georgian Orthodox Church has regained much power and full independence from the state since the restoration of Georgia's independence in 1991. It is not a state religion, but its special status is recognized by the Concordat of 2002.
Apart from the Georgian Orthodox Church, Christianity in Georgia is represented by followers of the Armenian Apostolic Church and the Russian Orthodox Church, and a Georgian Catholic Church which mostly follows either the Latin Rite or the Armenian rite.
A 2015 study estimates some 1,300 Christian believers from a Muslim background in the country, most of them belonging to some form of Protestantism.
Islam in Georgia was introduced in 645 AD during the reign of third Caliph of Islam, Uthman. During this period, Tbilisi (al-Tefelis) grew into a center of trade between the Islamic world and northern Europe. Islam's history continued in Georgia throughout the late 14th and early 15th centuries with Timur's invasions of Georgia and during the 16th and early 19th centuries, the Iranians (Safavids, Afsharids, Qajars) and Ottomans commanded influence in the region until its annexation by Russia in 1801. In 1703, Vakhtang VI became the ruler of the kingdom of Kartli and he embraced Islam. Other notable Georgian Muslims from that era include David XI of Kartli, Jesse of Kakheti and Simon II of Kartli.
Muslims constitute 9.9%, or 463,062 of the Georgian population. There are two major Muslim groups in Georgia. The ethnic Georgian Muslims are Sunni Hanafi and are concentrated in Autonomous Republic of Adjara of Georgia bordering Turkey. The ethnic Azerbaijani Muslims are predominantly Shia Ithna Ashariyah and are concentrated along the border with Azerbaijan and Armenia.
The Jews have a history in Georgia extending back over 2000 years. Today there is a small Jewish community in the country (3,541 according to the 2002 census), although the Jewish population was over 100,000 as recently as the 1970s. Especially following the collapse of the Soviet Union, almost all of the country's Jews have left, mainly to Israel. The majority of Georgia's remaining Jews today live in Tbilisi and are served by its two synagogues. Because the size of the community is now so small, and for economic reasons, the two congregations are now housed on two storeys of one of the formerly separate synagogues.
The history of the Bahá'í Faith in Georgia begins with its arrival in the region in 1850 through its association with the precursor religion the Bábí Faith during the lifetime of Bahá'u'lláh. During the period of Soviet policy of religious oppression, the Bahá'ís in the Soviet Republics lost contact with the Bahá'ís elsewhere. However, in 1963 an individual was identified in Tbilisi. Following Perestroika the first Bahá'í Local Spiritual Assembly of Georgia formed in 1991 and Georgian Bahá'ís elected their first National Spiritual Assembly in 1995. The religion is noted as growing in Georgia.
The Georgian Constitution provides for freedom of religion, and the Government generally respects this right in practice. Citizens generally do not interfere with traditional religious groups; however, there have been reports of violence and discrimination against nontraditional religious groups.