This entry is an ordered listing of religions by adherents starting with the largest group and sometimes includes the percent of total population. The core characteristics and beliefs of the world's major religions are described below.
Baha'i - Founded by Mirza Husayn-Ali (known as Baha'u'llah) in Iran in 1852, Baha'i faith emphasizes monotheism and believes in one eternal transcendent God. Its guiding focus is to encourage the unity of all peoples on the earth so that justice and peace may be achieved on earth. Baha'i revelation contends the prophets of major world religions reflect some truth or element of the divine, believes all were manifestations of God given to specific communities in specific times, and that Baha'u'llah is an additional prophet meant to call all humankind. Bahais are an open community, located worldwide, with the greatest concentration of believers in South Asia.
Buddhism - Religion or philosophy inspired by the 5th century B.C. teachings of Siddhartha Gautama (also known as Gautama Buddha "the enlightened one"). Buddhism focuses on the goal of spiritual enlightenment centered on an understanding of Gautama Buddha's Four Noble Truths on the nature of suffering, and on the Eightfold Path of spiritual and moral practice, to break the cycle of suffering of which we are a part. Buddhism ascribes to a karmic system of rebirth. Several schools and sects of Buddhism exist, differing often on the nature of the Buddha, the extent to which enlightenment can be achieved - for one or for all, and by whom - religious orders or laity.
Basic Groupings
   Theravada Buddhism: The oldest Buddhist school, Theravada is practiced mostly in Sri Lanka, Cambodia, Laos, Burma, and Thailand, with minority representation elsewhere in Asia and the West. Theravadans follow the Pali Canon of Buddha's teachings, and believe that one may escape the cycle of rebirth, worldly attachment, and suffering for oneself; this process may take one or several lifetimes.
   Mahayana Buddhism, including subsets Zen and Tibetan Buddhism: Forms of Mahayana Buddhism are common in East Asia and Tibet, and parts of the West. Mahayanas have additional scriptures beyond the Pali Canon and believe the Buddha is eternal and still teaching. Unlike Theravada Buddhism, Mahayana schools maintain the Buddha-nature is present in all beings and all will ultimately achieve enlightenment.
Christianity - Descending from Judaism, Christianity's central belief maintains Jesus of Nazareth is the promised messiah of the Hebrew Scriptures, and that his life, death, and resurrection are salvific for the world. Christianity is one of the three monotheistic Abrahamic faiths, along with Islam and Judaism, which traces its spiritual lineage to Abraham of the Hebrew Scriptures. Its sacred texts include the Hebrew Bible and the New Testament (or the Christian Gospels).
Basic Groupings
   Catholicism (or Roman Catholicism): This is the oldest established western Christian church and the world's largest single religious body. It is supranational, and recognizes a hierarchical structure with the Pope, or Bishop of Rome, as its head, located at the Vatican. Catholics believe the Pope is the divinely ordered head of the Church from a direct spiritual legacy of Jesus' apostle Peter. Catholicism is comprised of 23 particular Churches, or Rites - one Western (Latin-Rite) and 22 Eastern. The Latin Rite is by far the largest, making up about 98% of Catholic membership. Eastern-Rite Churches, such as the Maronite Church and the Ukrainian Catholic Church, are in communion with Rome although they preserve their own worship traditions and their immediate hierarchy consists of clergy within their own rite. The Catholic Church has a comprehensive theological and moral doctrine specified for believers in its catechism, which makes it unique among most forms of Christianity.
   Mormonism (including the Church of Jesus Christ of Latter-Day Saints): Originating in 1830 in the United States under Joseph Smith, Mormonism is not characterized as a form of Protestant Christianity because it claims additional revealed Christian scriptures after the Hebrew Bible and New Testament. The Book of Mormon maintains there was an appearance of Jesus in the New World following the Christian account of his resurrection, and that the Americas are uniquely blessed continents. Mormonism believes earlier Christian traditions, such as the Roman Catholic, Orthodox, and Protestant reform faiths, are apostasies and that Joseph Smith's revelation of the Book of Mormon is a restoration of true Christianity. Mormons have a hierarchical religious leadership structure, and actively proselytize their faith; they are located primarily in the Americas and in a number of other Western countries.
   Orthodox Christianity: The oldest established eastern form of Christianity, the Holy Orthodox Church, has a ceremonial head in the Bishop of Constantinople (Istanbul), also known as a Patriarch, but its various regional forms (e.g., Greek Orthodox, Russian Orthodox, Serbian Orthodox, Ukrainian Orthodox) are autocephalous (independent of Constantinople's authority, and have their own Patriarchs). Orthodox churches are highly nationalist and ethnic. The Orthodox Christian faith shares many theological tenets with the Roman Catholic Church, but diverges on some key premises and does not recognize the governing authority of the Pope.
   Protestant Christianity: Protestant Christianity originated in the 16th century as an attempt to reform Roman Catholicism's practices, dogma, and theology. It encompasses several forms or denominations which are extremely varied in structure, beliefs, relationship to state, clergy, and governance. Many protestant theologies emphasize the primary role of scripture in their faith, advocating individual interpretation of Christian texts without the mediation of a final religious authority such as the Roman Pope. The oldest Protestant Christianities include Lutheranism, Calvinism (Presbyterians), and Anglican Christianity (Episcopalians), which have established liturgies, governing structure, and formal clergy. Other variants on Protestant Christianity, including Pentecostal movements and independent churches, may lack one or more of these elements, and their leadership and beliefs are individualized and dynamic.
Hinduism - Originating in the Vedic civilization of India (second and first millennium B.C.), Hinduism is an extremely diverse set of beliefs and practices with no single founder or religious authority. Hinduism has many scriptures; the Vedas, the Upanishads, and the Bhagavad-Gita are among some of the most important. Hindus may worship one or many deities, usually with prayer rituals within their own home. The most common figures of devotion are the gods Vishnu, Shiva, and a mother goddess, Devi. Most Hindus believe the soul, or atman, is eternal, and goes through a cycle of birth, death, and rebirth (samsara) determined by one's positive or negative karma, or the consequences of one's actions. The goal of religious life is to learn to act so as to finally achieve liberation (moksha) of one's soul, escaping the rebirth cycle.
Islam - The third of the monotheistic Abrahamic faiths, Islam originated with the teachings of Muhammad in the 7th century. Muslims believe Muhammad is the final of all religious prophets (beginning with Abraham) and that the Qu'ran, which is the Islamic scripture, was revealed to him by God. Islam derives from the word submission, and obedience to God is a primary theme in this religion. In order to live an Islamic life, believers must follow the five pillars, or tenets, of Islam, which are the testimony of faith (shahada), daily prayer (salah), giving alms (zakah), fasting during Ramadan (sawm), and the pilgrimage to Mecca (hajj).
Basic Groupings
   The two primary branches of Islam are Sunni and Shia, which split from each other over a religio-political leadership dispute about the rightful successor to Muhammad. The Shia believe Muhammad's cousin and son-in-law, Ali, was the only divinely ordained Imam (religious leader), while the Sunni maintain the first three caliphs after Muhammad were also legitimate authorities. In modern Islam, Sunnis and Shia continue to have different views of acceptable schools of Islamic jurisprudence, and who is a proper Islamic religious authority. Islam also has an active mystical branch, Sufism, with various Sunni and Shia subsets.
    Sunni Islam accounts for over 75% of the world's Muslim population. It recognizes the Abu Bakr as the first caliph after Muhammad. Sunni has four schools of Islamic doctrine and law - Hanafi, Maliki, Shafi'i, and Hanbali - which uniquely interpret the Hadith, or recorded oral traditions of Muhammad. A Sunni Muslim may elect to follow any one of these schools, as all are considered equally valid.
    Shia Islam represents 10-20% of Muslims worldwide, and its distinguishing feature is its reverence for Ali as an infallible, divinely inspired leader, and as the first Imam of the Muslim community after Muhammad. A majority of Shia are known as "Twelvers," because they believe that the 11 familial successor imams after Muhammad culminate in a 12th Imam (al-Mahdi) who is hidden in the world and will reappear at its end to redeem the righteous.
Variants
   Ismaili faith: A sect of Shia Islam, its adherents are also known as "Seveners," because they believe that the rightful seventh Imam in Islamic leadership was Isma'il, the elder son of Imam Jafar al-Sadiq. Ismaili tradition awaits the return of the seventh Imam as the Mahdi, or Islamic messianic figure. Ismailis are located in various parts of the world, particularly South Asia and the Levant.
   Alawi faith: Another Shia sect of Islam, the name reflects followers' devotion to the religious authority of Ali. Alawites are a closed, secretive religious group who assert they are Shia Muslims, although outside scholars speculate their beliefs may have a syncretic mix with other faiths originating in the Middle East. Alawis live mostly in Syria, Lebanon, and Turkey.
   Druze faith: A highly secretive tradition and a closed community that derives from the Ismaili sect of Islam; its core beliefs are thought to emphasize a combination of Gnostic principles believing that the Fatimid caliph, al-Hakin, is the one who embodies the key aspects of goodness of the universe, which are, the intellect, the word, the soul, the preceder, and the follower. The Druze have a key presence in Syria, Lebanon, and Israel.
Jainism - Originating in India, Jain spiritual philosophy believes in an eternal human soul, the eternal universe, and a principle of "the own nature of things." It emphasizes compassion for all living things, seeks liberation of the human soul from reincarnation through enlightenment, and values personal responsibility due to the belief in the immediate consequences of one's behavior. Jain philosophy teaches non-violence and prescribes vegetarianism for monks and laity alike; its adherents are a highly influential religious minority in Indian society.
Judaism - One of the first known monotheistic religions, likely dating to between 2000-1500 B.C., Judaism is the native faith of the Jewish people, based upon the belief in a covenant of responsibility between a sole omnipotent creator God and Abraham, the patriarch of Judaism's Hebrew Bible, or Tanakh. Divine revelation of principles and prohibitions in the Hebrew Scriptures form the basis of Jewish law, or halakhah, which is a key component of the faith. While there are extensive traditions of Jewish halakhic and theological discourse, there is no final dogmatic authority in the tradition. Local communities have their own religious leadership. Modern Judaism has three basic categories of faith: Orthodox, Conservative, and Reform/Liberal. These differ in their views and observance of Jewish law, with the Orthodox representing the most traditional practice, and Reform/Liberal communities the most accommodating of individualized interpretations of Jewish identity and faith.
Shintoism - A native animist tradition of Japan, Shinto practice is based upon the premise that every being and object has its own spirit or kami. Shinto practitioners worship several particular kamis, including the kamis of nature, and families often have shrines to their ancestors' kamis. Shintoism has no fixed tradition of prayers or prescribed dogma, but is characterized by individual ritual. Respect for the kamis in nature is a key Shinto value. Prior to the end of World War II, Shinto was the state religion of Japan, and bolstered the cult of the Japanese emperor.
Sikhism - Founded by the Guru Nanak (born 1469), Sikhism believes in a non-anthropomorphic, supreme, eternal, creator God; centering one's devotion to God is seen as a means of escaping the cycle of rebirth. Sikhs follow the teachings of Nanak and nine subsequent gurus. Their scripture, the Guru Granth Sahib - also known as the Adi Granth - is considered the living Guru, or final authority of Sikh faith and theology. Sikhism emphasizes equality of humankind and disavows caste, class, or gender discrimination.
Taoism - Chinese philosophy or religion based upon Lao Tzu's Tao Te Ching, which centers on belief in the Tao, or the way, as the flow of the universe and the nature of things. Taoism encourages a principle of non-force, or wu-wei, as the means to live harmoniously with the Tao. Taoists believe the esoteric world is made up of a perfect harmonious balance and nature, while in the manifest world - particularly in the body - balance is distorted. The Three Jewels of the Tao - compassion, simplicity, and humility - serve as the basis for Taoist ethics.
Zoroastrianism - Originating from the teachings of Zoroaster in about the 9th or 10th century B.C., Zoroastrianism may be the oldest continuing creedal religion. Its key beliefs center on a transcendent creator God, Ahura Mazda, and the concept of free will. The key ethical tenets of Zoroastrianism expressed in its scripture, the Avesta, are based on a dualistic worldview where one may prevent chaos if one chooses to serve God and exercises good thoughts, good words, and good deeds. Zoroastrianism is generally a closed religion and members are almost always born to Zoroastrian parents. Prior to the spread of Islam, Zoroastrianism dominated greater Iran. Today, though a minority, Zoroastrians remain primarily in Iran, India, and Pakistan.

Country
Religions(%)
Afghanistan Sunni Muslim 80%, Shia Muslim 19%, other 1%
 
Albania Muslim 70%, Albanian Orthodox 20%, Roman Catholic 10%
note: percentages are estimates; there are no available current statistics on religious affiliation; all mosques and churches were closed in 1967 and religious observances prohibited; in November 1990, Albania began allowing private religious practice
 
Algeria Sunni Muslim (state religion) 99%, Christian and Jewish 1%
 
American Samoa Christian Congregationalist 50%, Roman Catholic 20%, Protestant and other 30%
 
Andorra Roman Catholic (predominant)
 
Angola indigenous beliefs 47%, Roman Catholic 38%, Protestant 15% (1998 est.)
 
Anguilla Anglican 29%, Methodist 23.9%, other Protestant 30.2%, Roman Catholic 5.7%, other Christian 1.7%, other 5.2%, none or unspecified 4.3% (2001 census)
 
Antigua and Barbuda Anglican 25.7%, Seventh Day Adventist 12.3%, Pentecostal 10.6%, Moravian 10.5%, Roman Catholic 10.4%, Methodist 7.9%, Baptist 4.9%, Church of God 4.5%, other Christian 5.4%, other 2%, none or unspecified 5.8% (2001 census)
 
Argentina nominally Roman Catholic 92% (less than 20% practicing), Protestant 2%, Jewish 2%, other 4%
 
Armenia Armenian Apostolic 94.7%, other Christian 4%, Yezidi (monotheist with elements of nature worship) 1.3%
 
Aruba Roman Catholic 80.8%, Evangelist 4.1%, Protestant 2.5%, Jehovah's Witnesses 1.5%, Methodist 1.2%, Jewish 0.2%, other 5.1%, none or unspecified 4.6%
 
Australia Catholic 25.8%, Anglican 18.7%, Uniting Church 5.7%, Presbyterian and Reformed 3%, Eastern Orthodox 2.7%, other Christian 7.9%, Buddhist 2.1%, Muslim 1.7%, other 2.4%, unspecified 11.3%, none 18.7% (2006 Census)
 
Austria Roman Catholic 73.6%, Protestant 4.7%, Muslim 4.2%, other 3.5%, unspecified 2%, none 12% (2001 census)
 
Azerbaijan Muslim 93.4%, Russian Orthodox 2.5%, Armenian Orthodox 2.3%, other 1.8% (1995 est.)
note: religious affiliation is still nominal in Azerbaijan; percentages for actual practicing adherents are much lower
 
Bahamas, The Baptist 35.4%, Anglican 15.1%, Roman Catholic 13.5%, Pentecostal 8.1%, Church of God 4.8%, Methodist 4.2%, other Christian 15.2%, none or unspecified 2.9%, other 0.8% (2000 census)
 
Bahrain Muslim (Shia and Sunni) 81.2%, Christian 9%, other 9.8% (2001 census)
 
Bangladesh Muslim 83%, Hindu 16%, other 1% (1998)
 
Barbados Protestant 63.4% (Anglican 28.3%, Pentecostal 18.7%, Methodist 5.1%, other 11.3%), Roman Catholic 4.2%, other Christian 7%, other 4.8%, none or unspecified 20.6% (2008 est.)
 
Belarus Eastern Orthodox 80%, other (including Roman Catholic, Protestant, Jewish, and Muslim) 20% (1997 est.)
 
Belgium Roman Catholic 75%, other (includes Protestant) 25%
 
Belize Roman Catholic 49.6%, Protestant 27% (Pentecostal 7.4%, Anglican 5.3%, Seventh-Day Adventist 5.2%, Mennonite 4.1%, Methodist 3.5%, Jehovah's Witnesses 1.5%), other 14%, none 9.4% (2000)
 
Benin Christian 42.8% (Catholic 27.1%, Celestial 5%, Methodist 3.2%, other Protestant 2.2%, other 5.3%), Muslim 24.4%, Vodoun 17.3%, other 15.5% (2002 census)
 
Bermuda Anglican 23%, Roman Catholic 15%, African Methodist Episcopal 11%, other Protestant 18%, other 12%, unaffiliated 6%, unspecified 1%, none 14% (2000 census)
 
Bhutan Lamaistic Buddhist 75%, Indian- and Nepalese-influenced Hinduism 25%
 
Bolivia Roman Catholic 95%, Protestant (Evangelical Methodist) 5%
 
Bosnia and Herzegovina Muslim 40%, Orthodox 31%, Roman Catholic 15%, other 14%
 
Botswana Christian 71.6%, Badimo 6%, other 1.4%, unspecified 0.4%, none 20.6% (2001 census)
 
Brazil Roman Catholic (nominal) 73.6%, Protestant 15.4%, Spiritualist 1.3%, Bantu/voodoo 0.3%, other 1.8%, unspecified 0.2%, none 7.4% (2000 census)
 
British Virgin Islands Protestant 86% (Methodist 33%, Anglican 17%, Church of God 9%, Seventh-Day Adventist 6%, Baptist 4%, Jehovah's Witnesses 2%, other 15%), Roman Catholic 10%, other 2%, none 2% (1991)
 
Brunei Muslim (official) 67%, Buddhist 13%, Christian 10%, other (includes indigenous beliefs) 10%
 
Bulgaria Bulgarian Orthodox 82.6%, Muslim 12.2%, other Christian 1.2%, other 4% (2001 census)
 
Burkina Faso Muslim 50%, indigenous beliefs 40%, Christian (mainly Roman Catholic) 10%
 
Burma Buddhist 89%, Christian 4% (Baptist 3%, Roman Catholic 1%), Muslim 4%, animist 1%, other 2%
 
Burundi Christian 67% (Roman Catholic 62%, Protestant 5%), indigenous beliefs 23%, Muslim 10%
 
Cambodia Buddhist 96.4%, Muslim 2.1%, other 1.3%, unspecified 0.2% (1998 census)
 
Cameroon indigenous beliefs 40%, Christian 40%, Muslim 20%
 
Canada Roman Catholic 42.6%, Protestant 23.3% (including United Church 9.5%, Anglican 6.8%, Baptist 2.4%, Lutheran 2%), other Christian 4.4%, Muslim 1.9%, other and unspecified 11.8%, none 16% (2001 census)
 
Cape Verde Roman Catholic (infused with indigenous beliefs), Protestant (mostly Church of the Nazarene)
 
Cayman Islands Church of God 26%, United Church 11.8% (Presbyterian and Congregational), Roman Catholic 11%, Baptist 8.7%, Seventh Day Adventist 8.2%, Anglican 5.7%, Pentecostal 5.3%, other Christian 2.7%, non-denominational 5.8%, other 3.8%, none 9.8%, unspecified 1.1% (1999 census)
 
Central African Republic indigenous beliefs 35%, Protestant 25%, Roman Catholic 25%, Muslim 15%
note: animistic beliefs and practices strongly influence the Christian majority
 
Chad Muslim 53.1%, Catholic 20.1%, Protestant 14.2%, animist 7.3%, other 0.5%, unknown 1.7%, atheist 3.1% (1993 census)
 
Chile Roman Catholic 70%, Evangelical 15.1%, Jehovah's Witness 1.1%, other Christian 1%, other 4.6%, none 8.3% (2002 census)
 
China Daoist (Taoist), Buddhist, Christian 3%-4%, Muslim 1%-2%
note: officially atheist (2002 est.)
 
Christmas Island Buddhist 36%, Muslim 25%, Christian 18%, other 21% (1997)
 
Cocos (Keeling) Islands Sunni Muslim 80%, other 20% (2002 est.)
 
Colombia Roman Catholic 90%, other 10%
 
Comoros Sunni Muslim 98%, Roman Catholic 2%
 
Congo, Democratic Republic of the Roman Catholic 50%, Protestant 20%, Kimbanguist 10%, Muslim 10%, other (includes syncretic sects and indigenous beliefs) 10%
 
Congo, Republic of the Christian 50%, animist 48%, Muslim 2%
 
Cook Islands Cook Islands Christian Church 55.9%, Roman Catholic 16.8%, Seventh-Day Adventists 7.9%, Church of Latter Day Saints 3.8%, other Protestant 5.8%, other 4.2%, unspecified 2.6%, none 3% (2001 census)
 
Costa Rica Roman Catholic 76.3%, Evangelical 13.7%, Jehovah's Witnesses 1.3%, other Protestant 0.7%, other 4.8%, none 3.2%
 
Cote d'Ivoire Muslim 38.6%, Christian 32.8%, indigenous 11.9%, none 16.7% (2008 est.)
note: the majority of foreigners (migratory workers) are Muslim (70%) and Christian (20%)
 
Croatia Roman Catholic 87.8%, Orthodox 4.4%, other Christian 0.4%, Muslim 1.3%, other and unspecified 0.9%, none 5.2% (2001 census)
 
Cuba nominally 85% Roman Catholic prior to CASTRO assuming power; Protestants, Jehovah's Witnesses, Jews, and Santeria are also represented
 
Cyprus Greek Orthodox 78%, Muslim 18%, other (includes Maronite and Armenian Apostolic) 4%
 
Czech Republic Roman Catholic 26.8%, Protestant 2.1%, other 3.3%, unspecified 8.8%, unaffiliated 59% (2001 census)
 
Denmark Evangelical Lutheran 95%, other Christian (includes Protestant and Roman Catholic) 3%, Muslim 2%
 
Djibouti Muslim 94%, Christian 6%
 
Dominica Roman Catholic 61.4%, Seventh Day Adventist 6%, Pentecostal 5.6%, Baptist 4.1%, Methodist 3.7%, Church of God 1.2%, Jehovah's Witnesses 1.2%, other Christian 7.7%, Rastafarian 1.3%, other or unspecified 1.6%, none 6.1% (2001 census)
 
Dominican Republic Roman Catholic 95%, other 5%
 
Ecuador Roman Catholic 95%, other 5%
 
Egypt Muslim (mostly Sunni) 90%, Coptic 9%, other Christian 1%
 
El Salvador Roman Catholic 57.1%, Protestant 21.2%, Jehovah's Witnesses 1.9%, Mormon 0.7%, other religions 2.3%, none 16.8% (2003 est.)
 
Equatorial Guinea nominally Christian and predominantly Roman Catholic, pagan practices
 
Eritrea Muslim, Coptic Christian, Roman Catholic, Protestant
 
Estonia Evangelical Lutheran 13.6%, Orthodox 12.8%, other Christian (including Methodist, Seventh-Day Adventist, Roman Catholic, Pentecostal) 1.4%, unaffiliated 34.1%, other and unspecified 32%, none 6.1% (2000 census)
 
Ethiopia Christian 60.8% (Orthodox 50.6%, Protestant 10.2%), Muslim 32.8%, traditional 4.6%, other 1.8% (1994 census)
 
European Union Roman Catholic, Protestant, Orthodox, Muslim, Jewish
 
Falkland Islands (Islas Malvinas) Christian 67.2%, none 31.5%, other 1.3% (2006 census)
 
Faroe Islands Evangelical Lutheran 83.8%, other and unspecified 16.2% (2006 administrative data)
 
Fiji Christian 64.5% (Methodist 34.6%, Roman Catholic 9.1%, Assembly of God 5.7%, Seventh Day Adventist 3.9%, Anglican 0.8%, other 10.4%), Hindu 27.9%, Muslim 6.3%, Sikh 0.3%, other or unspecified 0.3%, none 0.7% (2007 census)
 
Finland Lutheran Church of Finland 82.5%, Orthodox Church 1.1%, other Christian 1.1%, other 0.1%, none 15.1% (2006)
 
France Roman Catholic 83%-88%, Protestant 2%, Jewish 1%, Muslim 5%-10%, unaffiliated 4%
overseas departments: Roman Catholic, Protestant, Hindu, Muslim, Buddhist, pagan
 
French Polynesia Protestant 54%, Roman Catholic 30%, other 10%, no religion 6%
 
Gabon Christian 55%-75%, animist, Muslim less than 1%
 
Gambia, The Muslim 90%, Christian 8%, indigenous beliefs 2%
 
Gaza Strip Muslim (predominantly Sunni) 99.3%, Christian 0.7%
 
Georgia Orthodox Christian 83.9%, Muslim 9.9%, Armenian-Gregorian 3.9%, Catholic 0.8%, other 0.8%, none 0.7% (2002 census)
 
Germany Protestant 34%, Roman Catholic 34%, Muslim 3.7%, unaffiliated or other 28.3%
 
Ghana Christian 68.8% (Pentecostal/Charismatic 24.1%, Protestant 18.6%, Catholic 15.1%, other 11%), Muslim 15.9%, traditional 8.5%, other 0.7%, none 6.1% (2000 census)
 
Gibraltar Roman Catholic 78.1%, Church of England 7%, other Christian 3.2%, Muslim 4%, Jewish 2.1%, Hindu 1.8%, other or unspecified 0.9%, none 2.9% (2001 census)
 
Greece Greek Orthodox 98%, Muslim 1.3%, other 0.7%
 
Greenland Evangelical Lutheran
 
Grenada Roman Catholic 53%, Anglican 13.8%, other Protestant 33.2%
 
Guam Roman Catholic 85%, other 15% (1999 est.)
 
Guatemala Roman Catholic, Protestant, indigenous Mayan beliefs
 
Guernsey Anglican, Roman Catholic, Presbyterian, Baptist, Congregational, Methodist
 
Guinea Muslim 85%, Christian 8%, indigenous beliefs 7%
 
Guinea-Bissau Muslim 50%, indigenous beliefs 40%, Christian 10%
 
Guyana Hindu 28.4%, Pentecostal 16.9%, Roman Catholic 8.1%, Anglican 6.9%, Seventh Day Adventist 5%, Methodist 1.7%, Jehovah Witness 1.1%, other Christian 17.7%, Muslim 7.2%, other 4.3%, none 4.3% (2002 census)
 
Haiti Roman Catholic 80%, Protestant 16% (Baptist 10%, Pentecostal 4%, Adventist 1%, other 1%), none 1%, other 3%
note: roughly half of the population practices voodoo
 
Holy See (Vatican City) Roman Catholic
 
Honduras Roman Catholic 97%, Protestant 3%
 
Hong Kong eclectic mixture of local religions 90%, Christian 10%
 
Hungary Roman Catholic 51.9%, Calvinist 15.9%, Lutheran 3%, Greek Catholic 2.6%, other Christian 1%, other or unspecified 11.1%, unaffiliated 14.5% (2001 census)
 
Iceland Lutheran Church of Iceland 80.7%, Roman Catholic Church 2.5%, Reykjavik Free Church 2.4%, Hafnarfjorour Free Church 1.6%, other religions 3.6%, unaffiliated 3%, other or unspecified 6.2% (2006 est.)
 
India Hindu 80.5%, Muslim 13.4%, Christian 2.3%, Sikh 1.9%, other 1.8%, unspecified 0.1% (2001 census)
 
Indonesia Muslim 86.1%, Protestant 5.7%, Roman Catholic 3%, Hindu 1.8%, other or unspecified 3.4% (2000 census)
 
Iran Muslim 98% (Shia 89%, Sunni 9%), other (includes Zoroastrian, Jewish, Christian, and Baha'i) 2%
 
Iraq Muslim 97% (Shia 60%-65%, Sunni 32%-37%), Christian or other 3%
 
Ireland Roman Catholic 87.4%, Church of Ireland 2.9%, other Christian 1.9%, other 2.1%, unspecified 1.5%, none 4.2% (2006 census)
 
Isle of Man Anglican, Roman Catholic, Methodist, Baptist, Presbyterian, Society of Friends
 
Israel Jewish 76.4%, Muslim 16%, Arab Christians 1.7%, other Christian 0.4%, Druze 1.6%, unspecified 3.9% (2004)
 
Italy Roman Catholic 90% (approximately; about one-third practicing), other 10% (includes mature Protestant and Jewish communities and a growing Muslim immigrant community)
 
Jamaica Protestant 62.5% (Seventh-Day Adventist 10.8%, Pentecostal 9.5%, Other Church of God 8.3%, Baptist 7.2%, New Testament Church of God 6.3%, Church of God in Jamaica 4.8%, Church of God of Prophecy 4.3%, Anglican 3.6%, other Christian 7.7%), Roman Catholic 2.6%, other or unspecified 14.2%, none 20.9%, (2001 census)
 
Japan Shintoism 83.9%, Buddhism 71.4%, Christianity 2%, other 7.8%
note: total adherents exceeds 100% because many people belong to both Shintoism and Buddhism (2005)
 
Jersey Anglican, Roman Catholic, Baptist, Congregational New Church, Methodist, Presbyterian
 
Jordan Sunni Muslim 92%, Christian 6% (majority Greek Orthodox, but some Greek and Roman Catholics, Syrian Orthodox, Coptic Orthodox, Armenian Orthodox, and Protestant denominations), other 2% (several small Shia Muslim and Druze populations) (2001 est.)
 
Kazakhstan Muslim 47%, Russian Orthodox 44%, Protestant 2%, other 7%
 
Kenya Protestant 45%, Roman Catholic 33%, Muslim 10%, indigenous beliefs 10%, other 2%
note: a large majority of Kenyans are Christian, but estimates for the percentage of the population that adheres to Islam or indigenous beliefs vary widely
 
Kiribati Roman Catholic 52%, Protestant (Congregational) 40%, other (includes Seventh-Day Adventist, Muslim, Baha'i, Latter-day Saints, Church of God) 8% (1999)
 
Korea, North traditionally Buddhist and Confucianist, some Christian and syncretic Chondogyo (Religion of the Heavenly Way)
note: autonomous religious activities now almost nonexistent; government-sponsored religious groups exist to provide illusion of religious freedom
 
Korea, South Christian 26.3% (Protestant 19.7%, Roman Catholic 6.6%), Buddhist 23.2%, other or unknown 1.3%, none 49.3% (1995 census)
 
Kosovo Muslim, Serbian Orthodox, Roman Catholic
 
Kuwait Muslim 85% (Sunni 70%, Shia 30%), other (includes Christian, Hindu, Parsi) 15%
 
Kyrgyzstan Muslim 75%, Russian Orthodox 20%, other 5%
 
Laos Buddhist 67%, Christian 1.5%, other and unspecified 31.5% (2005 census)
 
Latvia Lutheran 19.6%, Orthodox 15.3%, other Christian 1%, other 0.4%, unspecified 63.7% (2006)
 
Lebanon Muslim 59.7% (Shia, Sunni, Druze, Isma'ilite, Alawite or Nusayri), Christian 39% (Maronite Catholic, Greek Orthodox, Melkite Catholic, Armenian Orthodox, Syrian Catholic, Armenian Catholic, Syrian Orthodox, Roman Catholic, Chaldean, Assyrian, Copt, Protestant), other 1.3%
note: 17 religious sects recognized
 
Lesotho Christian 80%, indigenous beliefs 20%
 
Liberia Christian 40%, Muslim 20%, indigenous beliefs 40%
 
Libya Sunni Muslim 97%, other 3%
 
Liechtenstein Roman Catholic 76.2%, Protestant 7%, unknown 10.6%, other 6.2% (June 2002)
 
Lithuania Roman Catholic 79%, Russian Orthodox 4.1%, Protestant (including Lutheran and Evangelical Christian Baptist) 1.9%, other or unspecified 5.5%, none 9.5% (2001 census)
 
Luxembourg Roman Catholic 87%, other (includes Protestant, Jewish, and Muslim) 13% (2000)
 
Macau Buddhist 50%, Roman Catholic 15%, none or other 35% (1997 est.)
 
Macedonia Macedonian Orthodox 64.7%, Muslim 33.3%, other Christian 0.37%, other and unspecified 1.63% (2002 census)
 
Madagascar indigenous beliefs 52%, Christian 41%, Muslim 7%
 
Malawi Christian 79.9%, Muslim 12.8%, other 3%, none 4.3% (1998 census)
 
Malaysia Muslim 60.4%, Buddhist 19.2%, Christian 9.1%, Hindu 6.3%, Confucianism, Taoism, other traditional Chinese religions 2.6%, other or unknown 1.5%, none 0.8% (2000 census)
 
Maldives Sunni Muslim
 
Mali Muslim 90%, Christian 1%, indigenous beliefs 9%
 
Malta Roman Catholic 98%
 
Marshall Islands Protestant 54.8%, Assembly of God 25.8%, Roman Catholic 8.4%, Bukot nan Jesus 2.8%, Mormon 2.1%, other Christian 3.6%, other 1%, none 1.5% (1999 census)
 
Mauritania Muslim 100%
 
Mauritius Hindu 48%, Roman Catholic 23.6%, Muslim 16.6%, other Christian 8.6%, other 2.5%, unspecified 0.3%, none 0.4% (2000 census)
 
Mayotte Muslim 97%, Christian (mostly Roman Catholic) 3%
 
Mexico Roman Catholic 76.5%, Protestant 6.3% (Pentecostal 1.4%, Jehovah's Witnesses 1.1%, other 3.8%), other 0.3%, unspecified 13.8%, none 3.1% (2000 census)
 
Micronesia, Federated States of Roman Catholic 50%, Protestant 47%, other 3%
 
Moldova Eastern Orthodox 98%, Jewish 1.5%, Baptist and other 0.5% (2000)
 
Monaco Roman Catholic 90%, other 10%
 
Mongolia Buddhist Lamaist 50%, Shamanist and Christian 6%, Muslim 4%, none 40% (2004)
 
Montenegro Orthodox 74.2%, Muslim 17.7%, Catholic 3.5%, other 0.6%, unspecified 3%, atheist 1% (2003 census)
 
Montserrat Anglican, Methodist, Roman Catholic, Pentecostal, Seventh-Day Adventist, other Christian denominations
 
Morocco Muslim 98.7%, Christian 1.1%, Jewish 0.2%
 
Mozambique Catholic 23.8%, Muslim 17.8%, Zionist Christian 17.5%, other 17.8%, none 23.1% (1997 census)
 
Namibia Christian 80% to 90% (Lutheran 50% at least), indigenous beliefs 10% to 20%
 
Nauru Nauru Congregational 35.4%, Roman Catholic 33.2%, Nauru Independent Church 10.4%, other 14.1%, none 4.5%, unspecified 2.4% (2002 census)
 
Nepal Hindu 80.6%, Buddhist 10.7%, Muslim 4.2%, Kirant 3.6%, other 0.9% (2001 census)
note: only official Hindu state in the world
 
Netherlands Roman Catholic 30%, Dutch Reformed 11%, Calvinist 6%, other Protestant 3%, Muslim 5.8%, other 2.2%, none 42% (2006)
 
Netherlands Antilles Roman Catholic 72%, Pentecostal 4.9%, Protestant 3.5%, Seventh-Day Adventist 3.1%, Methodist 2.9%, Jehovah's Witnesses 1.7%, other Christian 4.2%, Jewish 1.3%, other or unspecified 1.2%, none 5.2% (2001 census)
 
New Caledonia Roman Catholic 60%, Protestant 30%, other 10%
 
New Zealand Anglican 14.9%, Roman Catholic 12.4%, Presbyterian 10.9%, Methodist 2.9%, Pentecostal 1.7%, Baptist 1.3%, other Christian 9.4%, other 3.3%, unspecified 17.2%, none 26% (2001 census)
 
Nicaragua Roman Catholic 58.5%, Evangelical 21.6%, Moravian 1.6%, Jehovah's Witness 0.9%, other 1.7%, none 15.7% (2005 census)
 
Niger Muslim 80%, other (includes indigenous beliefs and Christian) 20%
 
Nigeria Muslim 50%, Christian 40%, indigenous beliefs 10%
 
Niue Ekalesia Niue (Niuean Church - a Protestant church closely related to the London Missionary Society) 61.1%, Latter-Day Saints 8.8%, Roman Catholic 7.2%, Jehovah's Witnesses 2.4%, Seventh-Day Adventist 1.4%, other 8.4%, unspecified 8.7%, none 1.9% (2001 census)
 
Norfolk Island Anglican 31.8%, Roman Catholic 11.5%, Uniting Church in Australia 10.6%, Seventh-Day Adventist 3.2%, other Christian 5.6%, none 19.9%, unspecified 16.6% (2006 census)
 
Northern Mariana Islands Christian (Roman Catholic majority, although traditional beliefs and taboos may still be found)
 
Norway Church of Norway 85.7%, Pentecostal 1%, Roman Catholic 1%, other Christian 2.4%, Muslim 1.8%, other 8.1% (2004)
 
Oman Ibadhi Muslim 75%, other (includes Sunni Muslim, Shia Muslim, Hindu) 25%
 
Pakistan Muslim 95% (Sunni 75%, Shia 20%), other (includes Christian and Hindu) 5%
 
Palau Roman Catholic 41.6%, Protestant 23.3%, Modekngei 8.8% (indigenous to Palau), Seventh-Day Adventist 5.3%, Jehovah's Witness 0.9%, Latter-Day Saints 0.6%, other 3.1%, unspecified or none 16.4% (2000 census)
 
Panama Roman Catholic 85%, Protestant 15%
 
Papua New Guinea Roman Catholic 27%, Evangelical Lutheran 19.5%, United Church 11.5%, Seventh-Day Adventist 10%, Pentecostal 8.6%, Evangelical Alliance 5.2%, Anglican 3.2%, Baptist 2.5%, other Protestant 8.9%, Bahai 0.3%, indigenous beliefs and other 3.3% (2000 census)
 
Paraguay Roman Catholic 89.6%, Protestant 6.2%, other Christian 1.1%, other or unspecified 1.9%, none 1.1% (2002 census)
 
Peru Roman Catholic 81.3%, Evangelical 12.5%, other 3.3%, unspecified or none 2.9% (2007 Census)
 
Philippines Roman Catholic 80.9%, Muslim 5%, Evangelical 2.8%, Iglesia ni Kristo 2.3%, Aglipayan 2%, other Christian 4.5%, other 1.8%, unspecified 0.6%, none 0.1% (2000 census)
 
Pitcairn Islands Seventh-Day Adventist 100%
 
Poland Roman Catholic 89.8% (about 75% practicing), Eastern Orthodox 1.3%, Protestant 0.3%, other 0.3%, unspecified 8.3% (2002)
 
Portugal Roman Catholic 84.5%, other Christian 2.2%, other 0.3%, unknown 9%, none 3.9% (2001 census)
 
Puerto Rico Roman Catholic 85%, Protestant and other 15%
 
Qatar Muslim 77.5%, Christian 8.5%, other 14% (2004 census)
 
Romania Eastern Orthodox (including all sub-denominations) 86.8%, Protestant (various denominations including Reformate and Pentecostal) 7.5%, Roman Catholic 4.7%, other (mostly Muslim) and unspecified 0.9%, none 0.1% (2002 census)
 
Russia Russian Orthodox 15-20%, Muslim 10-15%, other Christian 2% (2006 est.)
note: estimates are of practicing worshipers; Russia has large populations of non-practicing believers and non-believers, a legacy of over seven decades of Soviet rule
 
Rwanda Roman Catholic 56.5%, Protestant 26%, Adventist 11.1%, Muslim 4.6%, indigenous beliefs 0.1%, none 1.7% (2001)
 
Saint Barthelemy Roman Catholic, Protestant, Jehovah's Witness
 
Saint Helena Anglican (majority), Baptist, Seventh-Day Adventist, Roman Catholic
 
Saint Kitts and Nevis Anglican, other Protestant, Roman Catholic
 
Saint Lucia Roman Catholic 67.5%, Seventh Day Adventist 8.5%, Pentecostal 5.7%, Rastafarian 2.1%, Anglican 2%, Evangelical 2%, other Christian 5.1%, other 1.1%, unspecified 1.5%, none 4.5% (2001 census)
 
Saint Martin Roman Catholic, Jehovah's Witness, Protestant, Hindu
 
Saint Pierre and Miquelon Roman Catholic 99%, other 1%
 
Saint Vincent and the Grenadines Anglican 47%, Methodist 28%, Roman Catholic 13%, other (includes Hindu, Seventh-Day Adventist, other Protestant) 12%
 
Samoa Congregationalist 34.8%, Roman Catholic 19.6%, Methodist 15%, Latter-Day Saints 12.7%, Assembly of God 6.6%, Seventh-Day Adventist 3.5%, Worship Centre 1.3%, other Christian 4.5%, other 1.9%, unspecified 0.1% (2001 census)
 
San Marino Roman Catholic
 
Sao Tome and Principe Catholic 70.3%, Evangelical 3.4%, New Apostolic 2%, Adventist 1.8%, other 3.1%, none 19.4% (2001 census)
 
Saudi Arabia Muslim 100%
 
Senegal Muslim 94%, Christian 5% (mostly Roman Catholic), indigenous beliefs 1%
 
Serbia Serbian Orthodox 85%, Catholic 5.5%, Protestant 1.1%, Muslim 3.2%, unspecified 2.6%, other, unknown, or atheist 2.6% (2002 census)
 
Seychelles Roman Catholic 82.3%, Anglican 6.4%, Seventh Day Adventist 1.1%, other Christian 3.4%, Hindu 2.1%, Muslim 1.1%, other non-Christian 1.5%, unspecified 1.5%, none 0.6% (2002 census)
 
Sierra Leone Muslim 60%, Christian 10%, indigenous beliefs 30%
 
Singapore Buddhist 42.5%, Muslim 14.9%, Taoist 8.5%, Hindu 4%, Catholic 4.8%, other Christian 9.8%, other 0.7%, none 14.8% (2000 census)
 
Slovakia Roman Catholic 68.9%, Protestant 10.8%, Greek Catholic 4.1%, other or unspecified 3.2%, none 13% (2001 census)
 
Slovenia Catholic 57.8%, Muslim 2.4%, Orthodox 2.3%, other Christian 0.9%, unaffiliated 3.5%, other or unspecified 23%, none 10.1% (2002 census)
 
Solomon Islands Church of Melanesia 32.8%, Roman Catholic 19%, South Seas Evangelical 17%, Seventh-Day Adventist 11.2%, United Church 10.3%, Christian Fellowship Church 2.4%, other Christian 4.4%, other 2.4%, unspecified 0.3%, none 0.2% (1999 census)
 
Somalia Sunni Muslim
 
South Africa Zion Christian 11.1%, Pentecostal/Charismatic 8.2%, Catholic 7.1%, Methodist 6.8%, Dutch Reformed 6.7%, Anglican 3.8%, Muslim 1.5%, other Christian 36%, other 2.3%, unspecified 1.4%, none 15.1% (2001 census)
 
Spain Roman Catholic 94%, other 6%
 
Sri Lanka Buddhist 69.1%, Muslim 7.6%, Hindu 7.1%, Christian 6.2%, unspecified 10% (2001 census provisional data)
 
Sudan Sunni Muslim 70% (in north), Christian 5% (mostly in south and Khartoum), indigenous beliefs 25%
 
Suriname Hindu 27.4%, Protestant 25.2% (predominantly Moravian), Roman Catholic 22.8%, Muslim 19.6%, indigenous beliefs 5%
 
Swaziland Zionist 40% (a blend of Christianity and indigenous ancestral worship), Roman Catholic 20%, Muslim 10%, other (includes Anglican, Bahai, Methodist, Mormon, Jewish) 30%
 
Sweden Lutheran 87%, other (includes Roman Catholic, Orthodox, Baptist, Muslim, Jewish, and Buddhist) 13%
 
Switzerland Roman Catholic 41.8%, Protestant 35.3%, Muslim 4.3%, Orthodox 1.8%, other Christian 0.4%, other 1%, unspecified 4.3%, none 11.1% (2000 census)
 
Syria Sunni Muslim 74%, other Muslim (includes Alawite, Druze) 16%, Christian (various denominations) 10%, Jewish (tiny communities in Damascus, Al Qamishli, and Aleppo)
 
Taiwan mixture of Buddhist and Taoist 93%, Christian 4.5%, other 2.5%
 
Tajikistan Sunni Muslim 85%, Shia Muslim 5%, other 10% (2003 est.)
 
Tanzania mainland - Christian 30%, Muslim 35%, indigenous beliefs 35%; Zanzibar - more than 99% Muslim
 
Thailand Buddhist 94.6%, Muslim 4.6%, Christian 0.7%, other 0.1% (2000 census)
 
Timor-Leste Roman Catholic 98%, Muslim 1%, Protestant 1% (2005)
 
Togo Christian 29%, Muslim 20%, indigenous beliefs 51%
 
Tokelau Congregational Christian Church 70%, Roman Catholic 28%, other 2%
note: on Atafu, all Congregational Christian Church of Samoa; on Nukunonu, all Roman Catholic; on Fakaofo, both denominations, with the Congregational Christian Church predominant
 
Tonga Christian (Free Wesleyan Church claims over 30,000 adherents)
 
Trinidad and Tobago Roman Catholic 26%, Hindu 22.5%, Anglican 7.8%, Baptist 7.2%, Pentecostal 6.8%, Muslim 5.8%, Seventh Day Adventist 4%, other Christian 5.8%, other 10.8%, unspecified 1.4%, none 1.9% (2000 census)
 
Tunisia Muslim 98%, Christian 1%, Jewish and other 1%
 
Turkey Muslim 99.8% (mostly Sunni), other 0.2% (mostly Christians and Jews)
 
Turkmenistan Muslim 89%, Eastern Orthodox 9%, unknown 2%
 
Turks and Caicos Islands Baptist 40%, Anglican 18%, Methodist 16%, Church of God 12%, other 14% (1990)
 
Tuvalu Church of Tuvalu (Congregationalist) 97%, Seventh-Day Adventist 1.4%, Baha'i 1%, other 0.6%
 
Uganda Roman Catholic 41.9%, Protestant 42% (Anglican 35.9%, Pentecostal 4.6%, Seventh Day Adventist 1.5%), Muslim 12.1%, other 3.1%, none 0.9% (2002 census)
 
Ukraine Ukrainian Orthodox - Kyiv Patriarchate 50.4%, Ukrainian Orthodox - Moscow Patriarchate 26.1%, Ukrainian Greek Catholic 8%, Ukrainian Autocephalous Orthodox 7.2%, Roman Catholic 2.2%, Protestant 2.2%, Jewish 0.6%, other 3.2% (2006 est.)
 
United Arab Emirates Muslim 96% (Shia 16%), other (includes Christian, Hindu) 4%
 
United Kingdom Christian (Anglican, Roman Catholic, Presbyterian, Methodist) 71.6%, Muslim 2.7%, Hindu 1%, other 1.6%, unspecified or none 23.1% (2001 census)
 
United States Protestant 51.3%, Roman Catholic 23.9%, Mormon 1.7%, other Christian 1.6%, Jewish 1.7%, Buddhist 0.7%, Muslim 0.6%, other or unspecified 2.5%, unaffiliated 12.1%, none 4% (2007 est.)
 
Uruguay Roman Catholic 47.1%, non-Catholic Christians 11.1%, nondenominational 23.2%, Jewish 0.3%, atheist or agnostic 17.2%, other 1.1% (2006)
 
Uzbekistan Muslim 88% (mostly Sunnis), Eastern Orthodox 9%, other 3%
 
Vanuatu Presbyterian 31.4%, Anglican 13.4%, Roman Catholic 13.1%, Seventh-Day Adventist 10.8%, other Christian 13.8%, indigenous beliefs 5.6% (including Jon Frum cargo cult), other 9.6%, none 1%, unspecified 1.3% (1999 Census)
 
Venezuela nominally Roman Catholic 96%, Protestant 2%, other 2%
 
Vietnam Buddhist 9.3%, Catholic 6.7%, Hoa Hao 1.5%, Cao Dai 1.1%, Protestant 0.5%, Muslim 0.1%, none 80.8% (1999 census)
 
Virgin Islands Baptist 42%, Roman Catholic 34%, Episcopalian 17%, other 7%
 
Wallis and Futuna Roman Catholic 99%, other 1%
 
West Bank Muslim 75% (predominantly Sunni), Jewish 17%, Christian and other 8%
 
Western Sahara Muslim
 
World Christians 33.32% (of which Roman Catholics 16.99%, Protestants 5.78%, Orthodox 3.53%, Anglicans 1.25%), Muslims 21.01%, Hindus 13.26%, Buddhists 5.84%, Sikhs 0.35%, Jews 0.23%, Baha'is 0.12%, other religions 11.78%, non-religious 11.77%, atheists 2.32% (2007 est.)
 
Yemen Muslim including Shaf'i (Sunni) and Zaydi (Shia), small numbers of Jewish, Christian, and Hindu
 
Zambia Christian 50%-75%, Muslim and Hindu 24%-49%, indigenous beliefs 1%
 
Zimbabwe syncretic (part Christian, part indigenous beliefs) 50%, Christian 25%, indigenous beliefs 24%, Muslim and other 1%

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Source:
 
• Note: Information for the US and US dependencies was complied from material in the public domain and does not represent Solidary Foundation estimates.

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