| Country | Religions |
|---|---|
| Afghanistan | Islam (Sunni 80%, Shiite 19%), other 1% |
| Albania | Islam 70%, Albanian Orthodox 20%, Roman Catholic 10% (est.) |
| Algeria | Islam (Sunni) 99% (state religion), Christian and Jewish 1% |
| Andorra | Roman Catholic (predominant) |
| Angola | Indigenous 47%, Roman Catholic 38%, Protestant 15% (1998 est.) |
| Antigua and Barbuda | Christian (predominantly Anglican and other Protestant; some Roman Catholic) |
| Argentina | Roman Catholic 92%, Protestant 2%, Jewish 2%, other 4% |
| Armenia | Armenian Apostolic 95%, other Christian 4%, Yezidi 1% |
| Australia | Roman Catholic 26%, Anglican 21%, other Christian 21%, Buddhist 2%, Islam 2%, other 1%, none 15% (2001) |
| Austria | Roman Catholic 74%, Protestant 5%, Islam 4%, none 12% (2001) |
| Azerbaijan | Islam 93%, Russian Orthodox 3%, Armenian Orthodox 2%, other 2% (1995 est.) |
| Bahamas | Baptist 35%, Anglican 15%, Roman Catholic 14%, Pentecostal 8%, Church of God 5%, Methodist 4%, other Christian 15% (2000) |
| Bahrain | Islam (Shiite and Sunni) 81%, Christian 9% |
| Bangladesh | Islam 83%, Hindu 16%, other 1% (1998) |
| Barbados | Protestant 67% (Anglican 40%, Pentecostal 8%, Methodist 7%, other 12%), Roman Catholic 4%, none 17%, other 12% |
| Belarus | Eastern Orthodox 80%, other (including Roman Catholic, Protestant, Jewish, and Muslim) 20% (1997 est.) |
| Belgium | Roman Catholic 75%, Protestant or other 25% |
| Belize | Roman Catholic 50%, Protestant 27% (Pentecostal 7%, Anglican 5%, Seventh-Day Adventist 5%, Mennonite 4%, Methodist 4%, Jehovah's Witnesses 2%), none 9%, other 14% (2000) |
| Benin | indigenous 50%, Christian 30%, Islam 20% |
| Bhutan | Lamaistic Buddhist 75%, Indian- and Nepalese-influenced Hinduism 25% |
| Bolivia | Roman Catholic 95%, Protestant (Evangelical Methodist) 5% |
| Bosnia and Herzegovina | Islam 40%, Orthodox 31%, Roman Catholic 15%, other 14% |
| Botswana | Christian 72%, Badimo 6%, none 21% (2001) |
| Brazil | Roman Catholic 74%, Protestant 15%, Spiritualist 1%, none 7% (2000) |
| Brunei | Islam (official religion) 67%, Buddhist 13%, Christian 10%, indigenous beliefs and other 10% |
| Bulgaria | Bulgarian Orthodox 83%, Islam 12%, other Christian 1% (2001) |
| Burkina Faso | Islam 50%, indigenous beliefs 40%, Christian (mainly Roman Catholic) 10% |
| Burundi | Roman Catholic 62%, indigenous 23%, Islam 10%, Protestant 5% |
| Cambodia | Theravada Buddhist 95%, others 5% |
| Cameroon | indigenous beliefs 40%, Christian 40%, Islam 20% |
| Canada | Roman Catholic 43%, Protestant 23% (including United Church 10%, Anglican 7%, Baptist 2%, Lutheran 2%), other Christian 4%, Muslim 2%, none 16% (2001) |
| Cape Verde | Roman Catholic (infused with indigenous beliefs), Protestant (mostly Church of the Nazarene) |
| Central African Republic | indigenous beliefs 35%, Protestant and Roman Catholic (both with animist influence) 25% each, Islam 15% |
| Chad | Islam 51%, Christian 35%, animist 7%, other 7% |
| Chile | Roman Catholic 89%, Protestant 11%, small Jewish population |
| China | Officially atheist; Daoist (Taoist), Buddhist, Christian 3%–4%, Muslim 1%–2% (2002 est.) |
| Colombia | Roman Catholic 90% |
| Comoros | Sunni Muslim 98%, Roman Catholic 2% |
| Congo, Democratic Republic of the | Roman Catholic 50%, Protestant 20%, Kimbanguist 10%, Islam 10%; other syncretic and indigenous 10% |
| Congo, Republic of | Christian 50%, animist 48%, Islam 2% |
| Costa Rica | Roman Catholic 76%, Evangelical 14%, Jehovah's Witnesses 1%, other Protestant 1%, other 5%, none 3% |
| Côte d'Ivoire | indigenous 25%–40%, Islam 35%–40%, Christian 20%–30% (2001) |
| Croatia | Roman Catholic 88%, Orthodox 4%, Muslim 1%, other Christian less than 1%, none 5% (2001) |
| Cuba | predominantly Roman Catholic and Santería (Afro-Cuban syncretic religion) |
| Cyprus | Greek Orthodox 78%, Islam 18%, Maronite, Armenian Apostolic, and other 4% |
| Czech Republic | Roman Catholic 27%, Protestant 2%, unaffiliated 59% (2001) |
| Denmark | Evangelical Lutheran 95%, other Protestant and Roman Catholic 3%, Muslim 2% |
| Djibouti | Islam 94%, Christian 6% |
| Dominica | Roman Catholic 77%, Protestant 15% (Methodist 5%, Pentecostal 3%, Seventh-Day Adventist 3%, Baptist 2%, other 2%), none 2% |
| Dominican Republic | Roman Catholic 95% |
| East Timor | Roman Catholic 90%, Islam 4%, Protestant 3%, Hindu 0.5%, Buddhist, animist (1992 est.) |
| Ecuador | Roman Catholic 95% |
| Egypt | Islam (mostly Sunni) 90%, Coptic 9%, Christian 1%, other 6% |
| El Salvador | Catholics 83%; growing population of evangelical Protestants (1992) |
| Equatorial Guinea | nominally Christian and predominantly Roman Catholic, pagan practices |
| Eritrea | Islam, Eritrean Orthodox Christianity, Roman Catholic, Protestant |
| Estonia | Evangelical Lutheran 14%, Russian Orthodox 13%, other Christian (including Methodist, Seventh-Day Adventist, Roman Catholic, Pentecostal) 1%, unaffiliated 34%, none 6% (2001) |
| Ethiopia | Islam 45%–50%, Ethiopian Orthodox 35%–40%, animist 12%, other 3%–8% |
| Fiji | Christian 52% (Methodist 37%, Roman Catholic 9%), Hindu 38%, Islam 8%, other 2% |
| Finland | Evangelical Lutheran 84%, Greek Orthodox 1%, other Christian 1%, none 14% |
| France | Roman Catholic 83%–88%, Protestant 2%, Islam 5%–10%, Jewish 1%, unaffiliated 4% |
| Gabon | Christian 55%–75%, animist, Islam less than 1% |
| Gambia | Islam 90%, Christian 9%, indigenous 1% |
| Georgia | Orthodox 84%, Islam 10%, Armenian-Gregorian 4%, Catholic 1% (2002) |
| Germany | Protestant 34%, Roman Catholic 34%, Islam 4%, Unaffiliated or other 28% |
| Ghana | Christian 63%, indigenous beliefs 21%, Islam 16% |
| Greece | Greek Orthodox 98%, Islam 1%, other 1% |
| Grenada | Roman Catholic 53%, Anglican 14%, other Protestant 33% |
| Guatemala | Roman Catholic, Protestant, indigenous Mayan beliefs |
| Guinea | Islam 85%, Christian 8%, indigenous 7% |
| Guinea-Bissau | indigenous beliefs 50%, Islam 45%, Christian 5% |
| Guyana | Christian 50%, Hindu 35%, Islam 10%, other 5% |
| Haiti | Roman Catholic 80%, Protestant 16% (Baptist 10%, Pentecostal 4%, Adventist 1%, other 1%), other 3%, none 1%. Note: roughly half the population practices Vaudou |
| Honduras | Roman Catholic 97%, Protestant 3% |
| Hungary | Roman Catholic 52%, Calvinist 16%, Lutheran 3%, Greek Catholic 3%, other Christian 1%, unaffiliated 15% (2001) |
| Iceland | Lutheran Church of Iceland 85.5%, Reykjavik Free Church 2.1%, Roman Catholic Church 2%, Hafnarfjorour Free Church 1.5%, other Christian 2.7%, other or unspecified 3.8%, unaffiliated 2.4% (2004) |
| India | Hindu 81%, Islam 13%, Christian 2%, Sikh 2% (2001) |
| Indonesia | Islam 88%, Protestant 5%, Roman Catholic 3%, Hindu 2%, Buddhist 1% (1998) |
| Iran | Islam 98% (Shi'a 89%, Sunni 9%); Zoroastrian, Jewish, Christian, and Baha'i 2% |
| Iraq | Islam 97% (Shiite 60%–65%, Sunni 32%–37%), Christian or other 3% |
| Ireland | Roman Catholic 88%, Church of Ireland 3%, other Christian 2%, none 4% |
| Israel | Judaism 77%, Islam 16%, Christian 2%, Druze 2% (2003) |
| Italy | Roman Catholic approx. 90%, Protestant, Jewish, Islamic |
| Jamaica | Protestant 61.3%, (Church of God 21.2%, Baptist 8.8%, Anglican 5.5%, Seventh-Day Adventist 9%, Pentecostal 7.6%, Methodist 2.7%, United Church 2.7%, Brethren 1.1%, Jehovah's Witness 1.6%, Moravian 1.1%), Roman Catholic 4%, other including some spiritual cults 34.7% |
| Japan | Shintoist and Buddhist 84%, other 16% (including Christian 0.7%) |
| Jordan | Islam (Sunni) 92%, Christian 6% (mostly Greek Orthodox), other 2% |
| Kazakhstan | Islam 47%, Russian Orthodox 44%, Protestant 2%, other 7% |
| Kenya | Protestant 45%, Roman Catholic 33%, indigenous beliefs 10%, Islam 10%, others 2% (note: estimates vary widely) |
| Kiribati | Roman Catholic 52%, Protestant (Congregational) 40%, some Seventh-Day Adventist, Muslim, Baha'i, Latter-day Saints, and Church of God (1999) |
| Korea, North | Buddhism and Confucianism; religious activities almost nonexistent |
| Korea, South | no affiliation 46%, Christian 26%, Buddhist 26%, Confucianist 1%, other 1% |
| Kuwait | Islam 85% (Sunni 70%, Shiite 30%); Christian, Hindu, Parsi, and other 15% |
| Kyrgyzstan | Islam 75%; Russian Orthodox 20%; other 5% |
| Laos | Buddhist 60%, animist and other 40% (including Christian 2%) |
| Latvia | Lutheran, Roman Catholic, Russian Orthodox |
| Lebanon | Islam 60% (Shi'a, Sunni, Druze, Isma'ilite, Alawite/Nusayri), Christian 39% (Maronite, Melkite, Syrian, Armenian, and Roman Catholic; Greek, Armenian, and Syrian Orthodox; Chaldean; Assyrian; Copt; Protestant), other 1% |
| Lesotho | Christian 80%, indigenous beliefs 20% |
| Liberia | traditional 40%, Christian 40%, Islam 20% |
| Libya | Islam (Sunni) 97% |
| Liechtenstein | Roman Catholic, 77%, Protestant, 7%; unknown, 11% (2002) |
| Lithuania | Roman Catholic 79%, Russian Orthodox 4%, Protestant (including Lutheran, evangelical Christian Baptist) 2%, none 10% (2001) |
| Luxembourg | Roman Catholic 87%; Protestant, Jewish, Islamic 13% (2000) |
| Macedonia | Macedonian Orthodox 32%, Islam 17% (2002) |
| Madagascar | indigenous beliefs 52%, Christian 41%, Islam 7% |
| Malawi | Christian 80%, Islam 13%, none 4% (1998) |
| Malaysia | Muslim, Buddhist, Daoist, Hindu, Christian, Sikh; Shamanism (East Malaysia) |
| Maldives | Islam (Sunni) |
| Mali | Islam 90%, indigenous beliefs 9%, Christian 1% |
| Malta | Roman Catholic 98% |
| Marshall Islands | Protestant 55%, Assembly of God 26%, Roman Catholic 8%, Bukot nan Jesus 3%, Mormon 2%, other Christian 4%, none 2% (1999) |
| Mauritania | Islam 100% |
| Mauritius | Hindu 48%, Roman Catholic 24%, other Christian 8%, Islam 17% (2000) |
| Mexico | nominally Roman Catholic 89%, Protestant 6%, other 5% |
| Micronesia | Roman Catholic 50%, Protestant 47% |
| Moldova | Eastern Orthodox 98%, Jewish 1.5%, Baptist and other 0.5% (2000) |
| Monaco | Roman Catholic 90% |
| Mongolia | Buddhist Lamaist 50%, Islam 4%, Shamanism and Christian 4%, none 40% (2004) |
| Montenegro | Orthodox, Muslim, Roman Catholic |
| Morocco | Islam 99%, Christian 1% |
| Mozambique | Mozambique 24%, Islam 18%, Zionist Christian 18%, none 23% (1997) |
| Myanmar | Buddhist 89%, Christian 4% (Baptist 3%, Roman Catholic 1%), Islam 4%, Animist 1%, other 2% |
| Namibia | Christian 80%–90% (Lutheran at least 50%), indigenous beliefs 10%–20% |
| Nauru | Christian (two-thirds Protestant, one-third Roman Catholic) |
| Nepal | Hindu 81%, Buddhist 11%, Islam 4%, Kirant 4% (2001) |
| Netherlands | Roman Catholic 31%, Dutch Reformed 13%, Calvinist 7%, Islam 6%, none 41% (2002) |
| New Zealand | Anglican 15%, Roman Catholic 12%, Presbyterian 11%, Methodist 3%, Pentecostal 2%, Baptist 1%, other Christian 9%, none 26% (2001) |
| Nicaragua | Roman Catholic 73%, Evangelical 15%, Moravian 2%, none 9% (1995) |
| Niger | Islam 80%, indigenous beliefs and Christian 20% |
| Nigeria | Islam 50%, Christian 40%, indigenous beliefs 10% |
| Norway | Evangelical Lutheran 86% (state church), Pentecostal 1%, Roman Catholic 1%, other Christian 2% (2004) |
| Oman | Islam: Ibadhi 75%, Sunni, Shi'a; Hindu |
| Pakistan | Islam 97% (Sunni 77%, Shiite 20%); Christian, Hindu, and other 3% |
| Palau | Roman Catholic 42%, Protestant 23%, Modekngei 9% (indigenous), Seventh-Day Adventist 5%, Jehovah's Witness 1%, Latter-Day Saints 1%, other religion 3%, unspecified or none 16% (2000) |
| Palestinian State (proposed) | West Bank: Islam 75% (predominantly Sunni), Jewish 17%, Christian and other 8%; Gaza Strip: Islam 98.7% (predominantly Sunni), Christian 0.7%, Jewish 0.6%. |
| Panama | Roman Catholic 85%, Protestant 15% |
| Papua New Guinea | Roman Catholic 22%, Lutheran 16%, Presbyterian/Methodist/London Missionary Society 8%, Anglican 5%, Evangelical Alliance 4%, Seventh-Day Adventist 1%, other Protestant 10%, indigenous beliefs 34% |
| Paraguay | Roman Catholic 90%, Mennonite, other Protestant 10% |
| Peru | Roman Catholic 81%, Seventh-Day Adventist 1%, other Christian 1%, unspecified or none 16% (2003 est.) |
| Philippines | Roman Catholic 81%, Evangelical 3%, Iglesia ni Kristo 2%, Aglipayan 2%, other Christian 5%, Islam 5% (2000) |
| Poland | Roman Catholic 90% (about 75% practicing), Eastern Orthodox 1%, Protestant and other (2002) |
| Portugal | Roman Catholic 94%, Protestant (1995) |
| Qatar | Islam 95% |
| Romania | Romanian Orthodox 87%, Protestant 8%, Roman Catholic 5%, Islam and other (2002) |
| Russia | Russian Orthodox 15%–20%, other Christian 2%, Islam 10%–15% (2006 est.; includes practicing worshippers only) |
| Rwanda | Roman Catholic 56.5%, Protestant 26%, Adventist 11.1%, Islam 4.6%, indigenous beliefs 0.1%, none 1.7% (2001) |
| St. Kitts and Nevis | Anglican, other Protestant, Roman Catholic |
| St. Lucia | Roman Catholic 68%, Seventh-Day Adventist 9%, Pentecostal 6%, Evangelical 2%, Anglican 2%, other Christian 5%, Rastafarian 2%, none 5% (2001) |
| St. Vincent and the Grenadines | Anglican 47%, Methodist 28%, Roman Catholic 13%, Hindu, Seventh-Day Adventist, other Protestant |
| 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%, other Christian 4.5%, Worship Centre 1.3%, other 1.7%, unspecified 0.1% (2001) |
| San Marino | Roman Catholic |
| São Tomé and Príncipe | Catholic 70%, Evangelical 3%, New Apostolic 2%, Adventist 2%, other 3%, none 19% (2001) |
| Saudi Arabia | Islam 100% |
| Senegal | Islam 94%, Christian 5% (mostly Roman Catholic), indigenous 1% |
| Serbia | Serbian Orthodox, Muslim, Roman Catholic, Protestant |
| Seychelles | Roman Catholic 83%, Anglican 6%, Seventh-Day Adventist 1%, other Christian 3%, Hindu 2%, Muslim 1%, none 1% |
| Sierra Leone | Islam 60%, indigenous 30%, Christian 10% |
| Singapore | Buddhist 43%, Islam 15%, Taoist 9%, Hindu 4%, Catholic 5%, other Christian 10%, none 15% (2000) |
| Slovakia | Roman Catholic 69%, Protestant 11%, Greek Catholic 4%, none 13% (2001) |
| Slovenia | Catholic 58% Orthodox 2%, other Christian 1%, Islam 2%, none 10% |
| Solomon Islands | Church of Melanesia 33%, Roman Catholic 19%, Seventh-Day Adventist 11%, United Church 10%, Christian Fellowship Church 2%, other Christian 4% (1999) |
| Somalia | Islam (Sunni) |
| South Africa | Zion Christian 11%, Pentecostal/Charismatic 8%, Catholic 7%, Methodist 7%, Dutch Reformed 7%, Anglican 4%, other Christian 36%, Islam 2%, none 15% (2001) |
| Spain | Roman Catholic 94%, other 6% |
| Sri Lanka | Buddhist 70%, Islam 8%, Hindu 7%, Christian 6% (2001) |
| Sudan | Islam (Sunni) 70% (in north), indigenous 25%, Christian 5% (mostly in south and Khartoum) |
| Suriname | Hindu 27.4%, Protestant 25.2% (predominantly Moravian), Roman Catholic 22.8%, Islam 19.6%, indigenous 5% |
| Swaziland | Zionist (a blend of Christianity and indigenous ancestral worship) 40%; Roman Catholic 20%; Muslim 10%; Anglican, Bahai, Methodist, Mormon, Jewish, and other 30% |
| Sweden | Lutheran 87%, Roman Catholic, Orthodox, Baptist, Muslim, Jewish, Buddhist |
| Switzerland | Roman Catholic 42%, Protestant 35%, Orthodox 2%, Muslim 4%, none 11% (2000) |
| Syria | Islam (Sunni) 74%; Alawite, Druze, and other Islamic sects 16%; Christian (various sects) 10%; Jewish (tiny communities in Damascus, Al Qamishli, and Aleppo) |
| Taiwan | mixture of Buddhist, Confucian, and Taoist 93%, Christian 4.5%, other 2.5% |
| Tajikistan | Islam: Sunni 85%, Shiite 5%; other 10% (2003 est.) |
| Tanzania | mainland: Christian 30%, Islam 35%, indigenous 35%; Zanzibar: more than 99% Islam |
| Thailand | Buddhist 95%, Islam 5%, Christian 1% (2000) |
| Togo | Indigenous beliefs 51%, Christian 29%, Islam 20% |
| Tonga | Christian (Free Wesleyan Church claims over 30,000 adherents) |
| Trinidad and Tobago | Roman Catholic 26%, Anglican 8%, Baptist 7%, Pentecostal 7%, Seventh-Day Adventist 4%, other Christian 6%, Hindu 22%, Islam 6%, none 2% |
| Tunisia | Islam (Sunni) 98%, Christian 1%, Jewish and other 1% |
| Turkey | Islam (mostly Sunni) 99.8%, other 0.2% (mostly Christians and Jews) |
| Turkmenistan | Islam 89%, Eastern Orthodox 9%, unknown 2% |
| Tuvalu | Church of Tuvalu (Congregationalist) 97%, Seventh-Day Adventist 1%, Baha'i 1% |
| Uganda | Roman Catholic 33%, Protestant 33%, Islam 16%, indigenous beliefs 18% |
| Ukraine | Ukrainian Orthodox (Kiev Patriarchate 19%, Moscow Patriarchate 9%, no particular division 16%), Ukrainian Greek Catholic 6%, Ukrainian Autocephalous Orthodox 2%, Protestant, Jewish, none 38% (2004) |
| United Arab Emirates | Islam 96% (Sunni 80%, Shiite 16%), Christian, Hindu, and other 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) |
| United States | Protestant 52%, Roman Catholic 24%, Mormon 2%, Jewish 1%, Muslim 1%, none 10% (2002) |
| Uruguay | Roman Catholic 66%, Protestant 2%, Jewish 1% |
| Uzbekistan | Islam (mostly Sunnis) 88%, Eastern Orthodox 9% |
| Vanuatu | Presbyterian 31%, Anglican 13%, Roman Catholic 13%, Seventh-Day Adventist 11%, other Christian 14%, indigenous beliefs 6% (including Jon Frum Cargo cult), none 1% |
| Vatican City (Holy See) | Roman Catholic. |
| Venezuela | Roman Catholic 96%, Protestant 2% |
| Vietnam | Buddhist 9%, Catholic 7%, Hoa Hao 2%, Cao Dai 1%, Protestant, Islam, none 81% |
| Western Sahara (proposed state) | Islam |
| Yemen | Islam (including Sunni and Shiite), small numbers of Jewish, Christian, and Hindu |
| Zambia | Christian 50%–75%, Islam 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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