根據統計數字, 以下的國家都是以基督教為國民信奉的宗教 (雖然法律上無列明是國教)
Christianity
In the following countries the majority of the population cites one of the branches of Christianity as their preferred religion:
* Angola
* Anguilla
* Antigua and Barbuda
* Argentina
* Armenia
* Aruba
* Australia
* Austria
* Bahamas
* Barbados
* Belarus
* Belgium
* Belize
* Bermuda
* Bolivia
* Bosnia and Herzegovina
* Brazil
* Bulgaria
* Burundi
* Canada
* Cape Verde
* Central African Republic
* Chile
* Colombia
* Cook Islands
* Costa Rica
* Croatia
* Cuba
* Cyprus
* Czech Republic
* Denmark
* Dominica
* Dominican Republic
* East Timor
* Ecuador
* El Salvador
* Equatorial Guinea
* Estonia
* Finland
* France
* French Guiana
* French Polynesia
* Gabon
* Georgia
* Germany
* Ghana
* Greece
* Greenland
* Guatemala
* Haiti
* Honduras
* Hungary
* Iceland
* Ireland
* Italy
* Jamaica
* Kenya
* Kiribati
* Latvia
* Lesotho
* Liechtenstein
* Lithuania
* Luxembourg
* Macedonia
* Malta
* Marshall Islands
* Martinique
* Mexico
* Micronesia, Federated States of
* Monaco
* Namibia
* Nauru
* Netherlands
* Netherlands Antilles
* New Zealand
* Nicaragua
* Niue
* Norfolk Island
* Norway
* Palau
* Panama
* Paraguay
* Peru
* Philippines
* Poland
* Portugal
* Reunion
* Romania
* Russia
* Rwanda
* Saint Kitts and Nevis
* Saint Lucia
* Saint Vincent
* Samoa
* San Marino
* Sao Tome and Principe
* Serbia and Montenegro
* Seychelles
* Slovakia
* Slovenia
* Solomon Islands
* South Africa
* Spain
* Swaziland
* Sweden
* Switzerland
* Tonga
* Trinidad and Tobago
* Tuvalu
* Uganda
* Ukraine
* United Kingdom
* Uruguay
* USA
* Vanuatu
* Vatican
* Venezuela
* Wallis and Futuna Islands
* Zaire (Democratic Republic of Congo)
* Zambia