| Country | Religions |
| 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) |
| South Georgia and the South Sandwich Islands | void |
| Southern Ocean | void |
| Spain | Roman Catholic 94%, other 6% |
| Spratly Islands | void |
| 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% |
| Svalbard | void |
| Swaziland | Zionist 40% (a blend of Christianity and indigenous ancestral worship), Roman Catholic 20%, Muslim 10%, other (includes Anglican, Bahai, Methodist, Mormon, Jewish) 30% |
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This page was last updated on 25 August, 2008 |
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