C
- Caiaphas
- Calendar of saints
- Calendar of saints (Anglican Church of Australia)
- Calendar of saints (Anglican Church of Canada)
- Calendar of saints (Anglican Church of Korea)
- Calendar of saints (Anglican Church of Southern Africa)
- Calendar of saints (Armenian Apostolic Church)
- Calendar of saints (Church of England)
- Calendar of saints (Episcopal Church)
- Calendar of saints (Hong Kong Sheng Kung Hui)
- Calendar of saints (Lutheran)
- Calendar of saints (Scottish Episcopal Church)
- Calvinism
- Camp meeting
- Canadian and American Reformed Churches
- Canadian Baptist Ministries
- Canadian Conference of Mennonite Brethren Churches
- Canadian Convention of Southern Baptists
- Canadian Council of Churches
- Canadian Yearly Meeting
- Canon (priest)
- Canonization
- Cardinal (Catholic Church)
- Castinus of Byzantium
- Categories of New Testament manuscripts
- Catholic Church
- Catholic Church by country
- Catholic Church in Australia
- Catholic Church in Canada
- Catholic Church in England and Wales
- Catholic Church in Ireland
- Catholic Church in Scotland
- Catholic Church in the United Kingdom
- Catholic Church in the United States
- Catholic Mariavite Church
- Catholicism
- Catholicos
- Celtic Christianity
- Celtic Orthodox Church
- Chaplain
- Chapters and verses of the Bible
- Charismatic Movement
- Charles de Steuben
- Charles Martel
- Christ (title)
- Christadelphians
- Christendom
- Christian and Missionary Alliance
- Christian apologetics
- Christian art
- Christian Church
- Christian Church (Disciples of Christ)
- Christian churches and churches of Christ
- Christian City Churches
- Christian Conference of Asia
- Christian denomination
- Christian Holiness Partnership
- Christian liturgy
- Christian martyrs
- Christian Methodist Episcopal Church
- Christian mission
- Christian monasticism
- Christian music
- Christian Outreach Centre
- Christian pacifism
- Christian prayer
- Christian Reformed Church in North America
- Christian Reformed Churches of Australia
- Christian revival
- Christian right
- Christian school
- Christian symbolism
- Christian theology
- Christian tradition
- Christian views on alcohol
- Christian views on astrology
- Christian views on cloning
- Christian views on contraception
- Christian views on marriage
- Christian views on sin
- Christian Zionism
- Christianity
- Christianity among the Mongols
- Christianity and antisemitism
- Christianity and divorce
- Christianity and domestic violence
- Christianity and environmentalism
- Christianity and Freemasonry
- Christianity and Hinduism
- Christianity and homosexuality
- Christianity and Islam
- Christianity and Judaism
- Christianity and multiculturalism
- Christianity and Neoplatonism
- Christianity and other religions
- Christianity and Paganism
- Christianity and politics
- Christianity and slavery
- Christianity by country
- Christianity in Abkhazia
- Christianity in Afghanistan
- Christianity in Africa
- Christianity in Albania
- Christianity in Algeria
- Christianity in Angola
- Christianity in Argentina
- Christianity in Armenia
- Christianity in Asia
- Christianity in Australia
- Christianity in Azerbaijan
- Christianity in Bahrain
- Christianity in Bangladesh
- Christianity in Belarus
- Christianity in Benin
- Christianity in Bhutan
- Christianity in Botswana
- Christianity in Brunei
- Christianity in Burkina Faso
- Christianity in Burma
- Christianity in Burundi
- Christianity in Cambodia
- Christianity in Canada
- Christianity in Cape Verde
- Christianity in China
- Christianity in Colombia
- Christianity in Comoros
- Christianity in Cuba
- Christianity in Cyprus
- Christianity in Denmark
- Christianity in Djibouti
- Christianity in East Timor
- Christianity in Eastern Arabia
- Christianity in Egypt
- Christianity in England
- Christianity in Eritrea
- Christianity in Ethiopia
- Christianity in Europe
- Christianity in France
- Christianity in Georgia (country)
- Christianity in Germany
- Christianity in Ghana
- Christianity in Guinea-Bissau
- Christianity in Haiti
- Christianity in Hong Kong
- Christianity in India
- Christianity in Indonesia
- Christianity in Iran
- Christianity in Iraq
- Christianity in Ireland
- Christianity in Israel
- Christianity in Italy
- Christianity in Jamaica
- Christianity in Japan
- Christianity in Jordan
- Christianity in Kazakhstan
- Christianity in Korea
- Christianity in Kosovo
- Christianity in Kuwait
- Christianity in Kyrgyzstan
- Christianity in Laos
- Christianity in Lebanon
- Christianity in Libya
- Christianity in Lithuania
- Christianity in Macau
- Christianity in Malaysia
- Christianity in Malta
- Christianity in Mauritania
- Christianity in Mauritius
- Christianity in Mongolia
- Christianity in Montenegro
- Christianity in Morocco
- Christianity in Nepal
- Christianity in New Zealand
- Christianity in Niger
- Christianity in Nigeria
- Christianity in North Korea
- Christianity in North Macedonia
- Christianity in Norway
- Christianity in Oman
- Christianity in Pakistan
- Christianity in Palestine
- Christianity in Panama
- Christianity in Poland
- Christianity in Portugal
- Christianity in Qatar
- Christianity in Russia
- Christianity in Samoa
- Christianity in Saudi Arabia
- Christianity in Scotland
- Christianity in Serbia
- Christianity in Singapore
- Christianity in Somalia
- Christianity in Somaliland
- Christianity in South Korea
- Christianity in Sri Lanka
- Christianity in Sudan
- Christianity in Switzerland
- Christianity in Syria
- Christianity in Taiwan
- Christianity in Tajikistan
- Christianity in Tanzania
- Christianity in Thailand
- Christianity in the 10th century
- Christianity in the 11th century
- Christianity in the 12th century
- Christianity in the 13th century
- Christianity in the 14th century
- Christianity in the 15th century
- Christianity in the 16th century
- Christianity in the 17th century
- Christianity in the 18th century
- Christianity in the 19th century
- Christianity in the 1st century
- Christianity in the 20th century
- Christianity in the 21st century
- Christianity in the 2nd century
- Christianity in the 3rd century
- Christianity in the 4th century
- Christianity in the 5th century
- Christianity in the 6th century
- Christianity in the 7th century
- Christianity in the 8th century
- Christianity in the 9th century
- Christianity in the Democratic Republic of the Congo
- Christianity in the Gambia
- Christianity in the Maldives
- Christianity in the Middle East
- Christianity in the Philippines
- Christianity in the United Arab Emirates
- Christianity in the United Kingdom
- Christianity in the United States
- Christianity in Tokelau
- Christianity in Tunisia
- Christianity in Turkey
- Christianity in Turkmenistan
- Christianity in Ukraine
- Christianity in Uzbekistan
- Christianity in Vatican City
- Christianity in Vietnam
- Christianity in Wales
- Christianity in Western Sahara
- Christianity in Yemen
- Christianity in Zambia
- Christianity in Zimbabwe
- Christianization of Bulgaria
- Christianization of Hungary
- Christianization of Iceland
- Christianization of Kievan Rus'
- Christianization of Lithuania
- Christianization of Pomerania
- Christianization of Scandinavia
- Christians
- Christmas
- Christmastide
- Christodoulos (Greek Orthodox patriarch of Alexandria)
- Christology
- Chronological list of saints and blesseds
- Chronological list of saints and blesseds in the 11th century
- Chronological list of saints and blesseds in the 12th century
- Chronological list of saints and blesseds in the 13th century
- Chronological list of saints and blesseds in the 14th century
- Chronological list of saints and blesseds in the 15th century
- Chronological list of saints and blesseds in the 16th century
- Chronological list of saints and blesseds in the 17th century
- Chronological list of saints and blesseds in the 18th century
- Chronological list of saints and blesseds in the 19th century
- Chronological list of saints and blesseds in the 20th century
- Chronological list of saints in the 10th century
- Chronological list of saints in the 1st century
- Chronological list of saints in the 2nd century
- Chronological list of saints in the 3rd century
- Chronological list of saints in the 4th century
- Chronological list of saints in the 5th century
- Chronological list of saints in the 6th century
- Chronological list of saints in the 7th century
- Chronological list of saints in the 8th century
- Chronological list of saints in the 9th century
- Chronology of Jesus
- Church Fathers
- Church in Wales
- Church of Christ (Latter Day Saints)
- Church of Christ, Scientist
- Church of England
- Church of God (Anderson, Indiana)
- Church of God (Cleveland, Tennessee)
- Church of God in Christ
- Church of God of Prophecy
- Church of Ireland
- Church of Scotland
- Church of the Brethren
- Church of the East
- Church of the Nazarene
- Church on the Rock International
- Church usher
- Churches of Christ
- Churches of Christ in Australia
- Churches Together in Britain and Ireland
- Churches Together in England
- Churches Uniting in Christ
- Churchwarden
- Circuit rider (religious)
- Claudius Lysias
- Cleansing of the Temple
- Cleopas
- Clopas
- Commissioning of the Twelve Apostles
- Communion of saints
- Community of Christ
- Conciliarism
- Conference of European Churches
- Confessional Evangelical Lutheran Conference
- Confessor of the Faith
- Congregation for the Causes of Saints
- Congregational church
- Congregational Federation
- Conrad Grebel
- Conservative Baptist Association of America
- Conservative Congregational Christian Conference
- Constantine I
- Constantine Leichoudes
- Constantine the Great
- Constantinople
- Continuing Anglican movement
- Coptic calendar
- Coptic history
- Coptic Orthodox Church in Australia
- Coptic Orthodox Church in Canada
- Coptic Orthodox Church of Alexandria
- Coptic versions of the Bible
- Cornelius the Centurion
- Council of Chalcedon
- Council of Ephesus
- Council of Jerusalem
- Council of Trent
- Counter-Reformation
- CRC Churches International
- Creed
- Crescens
- Criticism of Christianity
- Crown of thorns
- Crucifixion of Jesus
- Crusades
- Cumberland Presbyterian Church
- Curate
- Cursing the fig tree
- Cyriacus I of Byzantium
- Cyril Lucaris
- Cyril of Alexandria
- Cyrus of Alexandria
- Cytûn