List of Christian denominations by number of members

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This is a list of Christian denominations by number of members. It is inevitably partial and generally based on claims by the denominations themselves. The numbers should therefore be considered approximate and the article is an ongoing work-in-progress.

The list includes the Catholic Church (including Eastern Catholic Churches), Protestant denominations with at least 0.2 million members, the Eastern Orthodox Church (and its offshoots), Oriental Orthodox Churches (and their offshoots), Nontrinitarian Restorationism, independent Catholic denominations, Nestorianism and all the other Christian branches and denominations with distinct theologies or polities.

Christianity is the largest religious group in the world, with an estimated 2.3 to 2.6 billion adherents in 2020.^[4][5][6][7]

The various denominations of Christianity fall into several large families, shaped both by culture and history.

Christianity arose in the first century AD after Rome had conquered much of the western parts of the fragmented Hellenistic empire created by Alexander the Great. The linguistic and cultural divisions of the first century AD Roman Empire with, broadly speaking, a Latin West and a Greek East, but also with significant areas in North Africa where Coptic was the dominant language, and areas in the Near East where Syriac or Aramaic was the dominant language, were reflected in the early Christian church. The church was called "Catholic" meaning "universal" from very early in the second century, a tacit acknowledgement of the many different cultures it encompassed.

Early Christianity suffered great, although intermittent, persecution from the state until Emperor Constantine the Great issued the Edict of Milan in 313 AD, legalizing Christianity. Shortly after the cessation of persecution, the Church had the luxury of reflecting on the meaning of its own teachings for the first time. Significant disputes arose, particularly over the nature of Christ and the relationship between Christ, the Father, and the Spirit. The Church chose to address those disputes with Ecumenical councils, the first four of which were at Nicaea, Constantinople, Ephesus and Chalcedon. The first two of these councils, the First Council of Nicaea and the First Council of Constantinople gave birth to the Nicene Creed which has become the touchstone for Christian beliefs.

Both of the next two Councils, the Council of Ephesus, and the Council of Chalcedon led to significant ruptures in the Church. Many Christians espousing the minority position at these two councils, even after extensive discussion and attempts at reconciliation, chose to strike out on their own, rather than to accept the positions held by the majority of the church fathers at the councils. Refusing to accept the Council of Ephesus, the Church of the East, encompassing many Syriac speaking Christians in what was then the far East of the Empire, split off in 431 AD. A few decades later, in 451 AD, after the Council of Chalcedon, the group that later became known as the Oriental Orthodox Churches, encompassing many Coptic speaking Christians in North Africa, also split off.

In 1054 AD, an accumulation of misunderstanding, disrespect and genuine theological differences led to the Great Schism, dividing Greek speaking Christians who became the Eastern Orthodox, from Latin speaking Christians who kept the name Catholic, but increasingly prefaced it with the adjective "Roman".

Beginning in 1517, the remaining western, Latin speaking church was itself rent asunder by the Reformation with many Christians rejecting papal authority and gathering together in new ways. Broadly speaking Protestantism has four streams: Lutheranism, Calvinism, Anabaptism, and Anglicanism. While all of these Christian groups from the Church of the East on, have their own subsequent splits, the fragmentation in Protestantism has been extreme, with hundreds of denominations. However, many of these independent churches still belong to broader Protestant traditions. Some of these fragmented groups, particularly among the Eastern churches, have sought to return to Rome, and have reunited themselves under papal authority.

(Not shown are ante-Nicene, nontrinitarian, and restorationist denominations.)

Catholicism is the main branch of Christianity and the Catholic Church is the largest among churches. About 50% of all Christians are Catholics.^[1][3] According to the annual directory of the Catholic Church or Annuario Pontificio of 2024, there were 1.390 billion baptized Catholics in 2022;^[8][9][10] that was 1.406 billion in 2023. In 2025, the World Christian Database reported 1.272 billion Catholics.^[1] That figure does not include independent denominations that self-identify as Catholic, numbering some 18 million adherents subscribing to Old Catholicism and other forms of Independent Catholicism.

• Byzantine Rite – 8.7 million
  • Ukrainian Greek Catholic Church – 5.5 million^[12]
  • Melkite Greek Catholic Church – 1.6 million^[13]
  • Romanian Greek Catholic Church – 0.5 million^[13]
  • Ruthenian Greek Catholic Church – 0.4 million^[13]
  • Hungarian Greek Catholic Church – 0.3 million^[13]
  • Slovak Greek Catholic Church – 0.3 million^[13]
  • Belarusian Greek Catholic Church – 0.1 million^[14]
  • Italo-Albanian Catholic Church – 0.01 million^[13]
  • Greek Catholic Church of Croatia and Serbia – 0.01 million^[13]
  • Georgian Byzantine Catholic Church (not sui iuris) – 0.01 million^[15]
  • Albanian Greek Catholic Church – 0.01 million^[16]
  • Russian Greek Catholic Church – 0.01 million^[14]
  • Greek Byzantine Catholic Church – 0.006 million^[17]
  • Macedonian Greek Catholic Church – 0.001 million^[18]
  • Bulgarian Greek Catholic Church – 0.001 million^[13]
• East Syriac Rite – 4.9 million
  • Syro-Malabar Church – 4.3 million^[13]
  • Chaldean Catholic Church – 0.6 million^[13]
• West Syriac Rite – 4.2 million
  • Maronite Church – 3.5 million^[13]
  • Syro-Malankara Catholic Church – 0.5 million^[13]
  • Syriac Catholic Church – 0.2 million^[13]
• Armenian Rite – 0.8 million
  • Armenian Catholic Church – 0.8 million^[13]
• Alexandrian Rite – 0.5 million
  • Coptic Catholic Church – 0.2 million^[13]
  • Eritrean Catholic Church – 0.2 million^[13]
  • Ethiopian Catholic Church – 0.07 million^[13]

• Society of Saint Pius X – 1 million^[19]

• Congregation of Mary Immaculate Queen^{[citation needed]}
• Society of Saint Pius V^{[citation needed]}

Protestantism is the second largest major group of Christians by number of followers. In 2025, the World Christian Database reported 629 million historic Protestants and 409 million Independent non-denominational Pentecostals.^[1][2] Estimates vary from 0.6 to 1.1 billion, or between 24% and 40% of all Christians.^{[20][1][21][22][23][24][25][26][27]} The main reason for this wide range is the lack of a common agreement among scholars as to which denominations constitute Protestantism. For instance, most sources include Anabaptism, Anglicanism, Baptists and non-denominational Christianity as part of Protestantism. However, widely used references like the World Christian Encyclopedia, which has been documenting the changing status of World Christianity over the past 120 years, classifies Independent Christians or non-denominational Pentecostals as a separate category from Protestantism.^[2][28][29] Moreover, Protestant denominations altogether do not form a single structure comparable to the Catholic Church, or to a lesser extent the Eastern Orthodox communion. However, several different comparable communions exist within Protestantism, such as the World Evangelical Alliance, the Anglican Communion, the World Communion of Reformed Churches, the Baptist World Alliance, the World Methodist Council and the Lutheran World Federation. Regardless, 900 million is the most accepted figure among various authors and scholars, and thus is used in this article. Note that this 900 million figure also includes Anglicans, Anabaptists, Baptists, as well as multiple other groups that might sometimes disavow a common "Protestant" designation, and would rather prefer to be called, simply, "Christian".^[21] According to Mark Juergensmeyer of the University of California, "popular Protestantism" (that is to say all forms of Protestantism with the notable exception of the historical denominations deriving from the Protestant Reformation) is the most dynamic religious movement in the contemporary world, alongside resurgent Islam.^[30]

The number of individuals who are members of historical Protestant Churches totals to 400–600 million.^{[n 1][31][n 2][32][n 3][1]}

There are 85 - 110 million Christians in Anglican tradition,^[35][36][37] mostly part of the Anglican Communion, the third-largest Christian communion in the world, with 42 members (provinces).^{[38][39][40][41][33]} When united churches in the Anglican Communion and the breakaway Continuing Anglican movement were not counted, there were an estimated 97.4 million Anglicans worldwide in 2020.^[42]

• Anglican Communion – 85-110 million^{[43][44][45][46][47]}
  • Church of England – 25 million^[48]
  • Church of Nigeria – 22 million^[49]
  • Church of Uganda – 13.3 million^[50][51]
  • Anglican Church of Kenya – 5.8 million^[52][53]
  • Church of South India – 4.5 million^[54]
  • Province of the Episcopal Church of South Sudan – 3.5 million^[55]
  • Anglican Church of Southern Africa – 3 - 4 million^[56][57][58]
  • Anglican Church of Australia – 2.5 - 4.9 million^[59][58]
  • Church of North India – 2.2 million^[60]
  • Anglican Church of Tanzania – 2.0 - 3.3 million^[61][62]
  • Episcopal Church in the United States – 1.6 - 2.4 million^[63][64]
  • Province of the Episcopal Church of Sudan – 1.1 million^[55]
  • Anglican Church of Rwanda – 1.0 - 1.2 million^[65][62]
  • Church of the Province of West Africa – 1.0 million^[66]
  • Anglican Church of Burundi – 0.9 million^[67]
  • Church of the Province of Central Africa – 0.9 million^[68]
  • Church in the Province of the West Indies – 0.8 million^[69]
  • Anglican Church in Aotearoa, New Zealand and Polynesia – 0.6 million^[70][62]
  • Church of the Province of the Indian Ocean – 0.5 million^[71]
  • Church of Christ in the Congo–Anglican Community of Congo – 0.5 million^[72]
  • Church of Pakistan – 0.5 million^[73]
  • Province of the Anglican Church of the Congo – 0.5 million^[74]
  • Anglican Church of Mozambique and Angola – 0.5 million^[75]
  • Church of Ireland – 0.3 million^[76]
  • Anglican Church of Canada – 0.3 - 1.1 million^[77][78]
  • Anglican Church of Papua New Guinea – 0.2 million^[79]
  • Anglican Church of Melanesia – 0.2 - 0.4 million^[80]
  • Anglican Church in Central America - 0.2 million^[62]
  • Episcopal Church in the Philippines - 0.2 million^[62]
  • Episcopal Anglican Church of Brazil - 0.1 million^[62]
  • Anglican Church of Korea - 0.1 million^[62]
• Continuing Anglican movement and independent churches – 0.7 million
  • Traditional Anglican Church – 0.4 million^[81]

The worldwide Baptist community numbers about 100 million.^{[82][83][84][85][86]} However, the Baptist World Alliance, a world communion of Baptist churches, self-reports only 51 million baptized believers, as Baptists do not count children as members, since they believe in believer's baptism, nor do all Baptists participate in the Alliance.^[85][83][84] Therefore, the BWA is the eighth-largest Christian communion.^[87]

• Southern Baptist Convention – 12.7 million^[88]
• Nigerian Baptist Convention – 9.0 million^[89]
• National Baptist Convention, USA – 8.4 million^[90][91]
• National Baptist Convention of America International – 3.5 million^[92]
• Baptist Convention of Tanzania – 2.7 million^[92]
• Baptist Convention of Kenya – 2.0 million^[92]
• Baptist General Convention of Texas – 1.8 million^[92][93]
• Brazilian Baptist Convention – 1.8 million^[92][94]
• Baptist Community of the Congo River – 1.8 million^[92]
• Myanmar Baptist Convention – 1.8 million^[92]
• Council of Baptist Churches in Northeast India – 1.6 million^[92]
• Progressive National Baptist Convention – 1.5 million^[92]
• Lott Carey Foreign Mission Convention – 1.2 million^[92]
• Baptist Bible Fellowship International – 1.2 million^[95]
• American Baptist Churches USA – 1.1 million^[92]
• Baptist Community of Congo – 1.0 million^[92]
• National Primitive Baptist Convention of the U.S.A. – 1.0 million^[95]
• Cooperative Baptist Fellowship – 0.7 million^[92]
• Convention of Philippine Baptist Churches – 0.7 million^[92]
• Reformed Baptist Convention in Rwanda – 0.6 million^[92]
• Baptist General Association of Virginia – 0.6 million^[92]
• Korea Baptist Convention – 0.5 million^[92]
• Baptist Union of Uganda – 0.5 million^[92]
• Samavesam of Telugu Baptist Churches – 0.5 million^[92]
• National Baptist Convention, Brazil – 0.4 million^[92]
• National Missionary Baptist Convention of America – 0.4 million^[92]
• Baptist Convention of Malawi – 0.4 million^[92]
• Converge – 0.4 million^[92][96]
• Baptist Convention of Zimbabwe – 0.3 million^[92]
• Cameroon Baptist Convention – 0.3 million^[92]
• Baptist Fellowship of Zambia – 0.3 million^[92]
• Convention of Baptist Churches of the Northern Circars (Índia) – 0.2 million^[92]
• Euro-Asiatic Federation of Unions of Evangelical Christians-Baptists – 0.2 million^[92]
• Baptist Community in Central Africa – 0.2 million^[92]
• Baptist Union of Zambia – 0.2 million^[92]
• Venture Church Network – 0.2 million^[97]
• National Association of Free Will Baptists – 0.2 million^[98]
• Convention of Visayas and Mindanao of Southern Baptist Churches – 0.2 million^[92]
• Seventh Day Baptists – 0.05 million^[99]

The number of adherents in the Lutheran denominations totals to 70–90 million persons (the Lutheran World Federation reports 78 million and is the sixth-largest communion)^[100] being represented in the following churches:^[23][101]

• Evangelical Church in Germany – 18.0 million,^[102] including also United churches
• Ethiopian Evangelical Church Mekane Yesus – 12.0 million^[100][103]
• Evangelical Lutheran Church in Tanzania – 8.5 million^[100][104]
• Batak Christian Protestant Church – 6.3 million^[100][105]
• Church of Sweden – 5.4 million^{[100][106][107]}
• Church of Denmark – 4.2 million^{[100][108][109]}
• Malagasy Lutheran Church – 4.0 million^[100][110]
• United Evangelical Lutheran Churches in India – 3.9 million^[100][111]
• Evangelical Lutheran Church of Finland – 3.5 million^{[100][112][113]}
• Church of Norway – 3.4 million^[114][115]
• Evangelical Lutheran Church in America – 2.7 million^[116][117]
• Lutheran Church of Christ in Nigeria – 2.3 million^[100][118]
• Evangelical Lutheran Church of Papua New Guinea – 1.8 million^[119]
• Lutheran Church – Missouri Synod – 1.7 million^[120]
• Evangelical Lutheran Church in Namibia – 0.9 million^[100][121]
• Evangelical Lutheran Church of Cameroon – 0.7 million^[100][122]
• Evangelical Church of the Lutheran Confession in Brazil – 0.6 million^{[100][123][124]}
• Evangelical Lutheran Church in Southern Africa – 0.6 million^[125]
• The Protestant Christian Church – 0.5 million^[105]
• Evangelical Lutheran Church in the Republic of Namibia – 0.4 million^[100][121]
• Evangelical Free Church of America – 0.4 million^[126]
• Evangelical Lutheran Church in Zimbabwe – 0.3 million^[100][127]
• The Indonesian Christian Church – 0.3 million^[105]
• Lutheran Congregations in Mission for Christ – 0.3 million^[128]
• Christian Protestant Church in Indonesia – 0.3 million^[105]
• Wisconsin Evangelical Lutheran Synod – 0.3 million^[129]
• Evangelical Lutheran Church of Latvia – 0.2 million^[100][130]
• Protestant Church of the Augsburg Confession in Austria – 0.2 million^[100][131]
• Evangelical Lutheran Church of Brazil – 0.2 million^[132]
• Church of Iceland – 0.2 million^[100][133]
• Simalungun Protestant Christian Church – 0.2 million^[100][105]
• Protestant Church of the Augsburg Confession of Alsace and Lorraine – 0.2 million^[100][134]
• Evangelical Church of the Augsburg Confession in Slovakia – 0.2 million^[100][135]
• Evangelical-Lutheran Church in Hungary – 0.2 million^[100][136]
• Estonian Evangelical Lutheran Church – 0.2 million^[100][137]
• Laestadianism (various denominations) – 0.2 million^{[citation needed]}

The churches of the Reformed tradition (which includes the Presbyterians, Continental Reformed, Congregationalists, and Waldensians) together have about 70–80 million members. The United Churches of Reformed origin have about 36 million members.^{[32][138][139][140][141][142]} the World Communion of Reformed Churches is one of the largest Christian communions, having 100 million members, considering only full members denominations.^[143]

• Presbyterianism – 50 million
  • Presbyterian Church of East Africa – 4.0 million^[144]
  • Presbyterian Church of Cameroon – 4.0 million^[145]
  • Presbyterian Church of Nigeria – 3.8 million^[146]
  • Presbyterian Church of Africa – 3.4 million^[147]
  • Church of Central Africa Presbyterian – 3.1 million^[148][149]
  • National Presbyterian Church in Mexico – 2.8 million^[150]
  • Church of Christ in Congo–Presbyterian Community of Congo – 2.5 million^[151]
  • Presbyterian Church in Korea (HapDong) – 2.25 million^[152]
  • Presbyterian Church of Korea (TongHap) – 2.20 million^[153][154]
  • Presbyterian Church in Korea (BaekSeok) – 2.0 million^[155]
  • Presbyterian Church in Cameroon – 2.0 million^[156]
  • Presbyterian Church in Rwanda – 1.6 million^[157]
  • Presbyterian Church of India – 1.6 million^[158]
  • Presbyterian Church of Ghana – 1.2 million^[159]
  • Presbyterian Church in Sudan – 1.0 million^[160]
  • Presbyterian Church (USA) – 1.0 million^[161]
  • Evangelical Church of Egypt (Synod of the Nile) - 0.7 milion^[162]
  • Presbyterian Church of Brazil – 0.7 million^[163]
  • Evangelical Presbyterian Church, Ghana – 0.6 million^[164]
  • United Church of Christ in the Philippines – 0.5 million^[165]
  • Uniting Presbyterian Church in Southern Africa – 0.5 million^[166]
  • Presbyterian Church of Pakistan – 0.5 million^[167]
  • Presbyterian Church in America – 0.4 million^[168]
  • Orthodox Presbyterian Church in Cameroon – 0.4 million^[169]
  • Kosin Presbyterian Church in Korea – 0.4 million^[170]
  • United Church of Canada – 0.3 million^[171]
  • Church of Scotland – 0.2 million^[172] or 1.5 million^[173]
  • Uniting Church in Australia – 0.2 million^[174]
  • Presbyterian Church in Taiwan – 0.2 million^[175]
  • Presbyterian Church of Mozambique – 0.2 million^[176]
  • Presbyterian Church in Ireland – 0.2 million^[177]
• Continental Reformed Protestantism – 30 million
  • Church of Christ in Nations - 8.0 million^[178]
  • Church of Jesus Christ in Madagascar – 6.0 million ^{[179][180][181][182]}
  • United Church in Zambia – 4.0 million^[183]
  • Protestant Church in Indonesia – 3.7 million^[184]
  • Evangelical Church of Cameroon – 2.5 million^[185]
  • Protestant Church of Switzerland – 1.9 million^[186]
  • Evangelical Reformed Church of Christ – 1.5 million^[187]
  • Protestant Church in the Netherlands – 1.4 million^[188]
  • Dutch Reformed Church in South Africa (NGK) – 1.1 million^[189]
  • Church of Christ in the Sudan Among the Tiv – 1.0 million^[190]
  • Reformed Church in Zambia – 1.0 million^[191]
  • Reformed Church in Hungary – 0.9 million^[192]
  • Uniting Reformed Church in Southern Africa – 0.9 million^[193][194]
  • Evangelical Christian Church of the Land of Papua – 0.8 million^[195][196]
  • Lesotho Evangelical Church in Southern Africa – 0.8 million^[197]
  • United Church in Papua New Guinea – 0.7 million^[198]
  • Central Sulawesi Christian Church – 0.5 million^[199]
  • Christian Reformed Church of Nigeria – 0.5 million^[200][201]
  • Reformed Church in Romania – 0.5 million^[202]
  • Christian Church of Sumba – 0.3 million^[199][203]
  • Evangelical Church in Kalimantan – 0.3 million^[204]
  • Karo Batak Protestant Church – 0.3 million^[205]
  • Evangelical Christian Church in Halmahera – 0.3 million^[206][207]
  • Evangelical Reformed Church in Angola – 0.3 million^[208]
  • Toraja Church – 0.2 million^{[209][210][211]}
  • Evangelical Church of Congo – 0.2 million^[212]
  • United Protestant Church of France - 0.2 million^[213]
  • Sudanese Church of Christ - 0.2 million^[214]
  • Christian Evangelical Church in Bolaang Mongondow - 0.2 million^[215]
  • Javanese Christian Church – 0.2 million^[216]
  • Indonesian Christian Church Synod – 0.2 million^[217]
  • Christian Reformed Church in North America – 0.2 million^[218]
  • Christian Evangelical Church of Sangihe Talaud – 0.2 million^[219][220]
  • Evangelical Reformed Church in Germany – 0.2 million^[102]

• Congregationalism – 5 million
  • United Congregational Church of Southern Africa – 1.5 million^[221]
  • Evangelical Congregational Church in Angola – 1.0 million^[222]
  • United Church of Christ – 0.7 million^[223]
  • United Church of Christ in Zimbabwe – 0.2 million^[224]

Methodism, including the Holiness Movement, has about 46 million members worldwide.^{[32][23][225]} United Churches of Methodist origin have another 12 million members.^{[226][60][227][228]} The World Methodist Council (WMC), with 39,8 million members is the ninth-largest communion.^[229] Not all of the following churches are member churches of the WMC. The largest Methodist denomination, the United Methodist Church, had about 25 percent^[230] of their churches disaffiliate between 2019 and 2023, some of whom joined the Global Methodist Church, thus figures for the two denominations are an ongoing process.

• United Methodist Church – 9.9 million^[231]
• Church of the Nazarene – 2.7 million^[232]
• African Methodist Episcopal Church – 2.5 million^[233]
• Methodist Church Nigeria – 2 million^[234]
• The Salvation Army – 1.8 million^[235]
• Methodist Church of Southern Africa – 1.7 million^[236]
• African Methodist Episcopal Zion Church – 1.4 million^[237]
• Korean Methodist Church – 1.1 million^[238][239]
• United Methodist Church of Ivory Coast – 1.0 million^[240][241]
• Free Methodist Church – 0.9 million^[242]
• Christian Methodist Episcopal Church – 0.9 million^[243]
• Methodist Church Ghana – 0.8 million^[244]
• Methodist Church in India – 0.6 million^[245]
• Methodist Church in Kenya – 0.5 million^[246]
• Global Methodist Church – 0.4 million^[247]
• Wesleyan Church – 0.4 million^[248]
• Methodist Church in Brazil – 0.2 million^[249]
• Methodist Church of Fiji and Rotuma – 0.2 million^[250]

• Seventh-day Adventist Church – 23.6 million^[251]
• Church of God (Seventh Day) – 0.2 million^{[citation needed]}
• Advent Christian Church – 0.1 million^{[citation needed]}
• Seventh Day Adventist Reform Movement – 0.042 million^{[citation needed]}

• Churches of Christ – 2 million^[252]
• Christian churches and churches of Christ – 1.1 million^[95]
• Community of Disciples of Christ in Congo – 0.7 million^[253]
• Christian Church (Disciples of Christ) – 0.3 million^[254]

• Mennonites – 2.1 million^[255]
• Schwarzenau Brethren (German Baptists) – 1.5 million^[256]
• Amish – 0.4 million^[257]
• Hutterites – 0.05 million^[258]

• Open Brethren – 3.3 million
  • International Brethren Conferences on Mission – 3.25 million^[259]
• Exclusive Brethren – 0.1 million
  • Plymouth Brethren Christian Church – 0.05 million^[260]
  • Darbyists – 0.04 million^[261]

• Moravian Church – 1.1 million^[262]
• Czechoslovak Hussite Church – 0.099 million^[263]
• Unity of the Brethren Baptists – 0.035 million^{[citation needed]}

• Friends World Committee for Consultation – 0.4 million^[264]
  • Evangelical Friends Church International – 0.2 million
  • Friends United Meeting – 0.17 million
  • Friends General Conference – 0.03 million

The denominations listed below did not emerge from the Protestant Reformation of the 16th century or its commonly acknowledged offshoots. Instead, they are broadly linked to Pentecostalism or similar other independent evangelical and revivalistic movements that originated in the beginning of the 20th century.^[265] For this reason, several sources tend to differentiate them from Protestants and classify them together as Independents, Non-core Protestants etc. Also included in this category are the numerous, yet very similar non-denominational churches. Nonetheless, most sources combine their numbers to the Protestant tally, while others do not since these churches do not self-identify with mainline Protestant traditions.^[2][21][22] Despite the absence of centralized control or leadership, if considered as a single cohort, this will easily be the second largest Christian tradition after Roman Catholicism.^{[266][267][268]} According to the Center for the Study of Global Christianity (CSGC), there are an estimated 450 million Independents world-wide, as of mid-2019.^[269]

Those who are members of the Pentecostal denomination number around 280 million people.^[23]

• Assemblies of God – 86 million (the fifth largest Christian communion)^[270]
• Apostolic Church – 15 million^{[citation needed]}
• International Circle of Faith – 11 million^[271]
• China Gospel Fellowship – 10 million^{[citation needed]}
• Fangcheng Fellowship – 10 million^[272]
• Universal Church of the Kingdom of God – 9.9 million^[273]
• Foursquare Church – 9 million^{[citation needed]}
• Ethiopian Kale Heywet Church – 9 million^{[citation needed]}
• Church of God in Christ – 6.5 million^[274]
• Church of God (Cleveland, Tennessee) – 6 million^{[citation needed]}
• Ethiopian Full Gospel Believers' Church – 4.5 million^[275]
• The Church of Pentecost – 4.2 million^[276]
• International Pentecostal Holiness Church – 4 million^{[citation needed]}
• Indonesian Bethel Church – 3 million^{[citation needed]}
• The Pentecostal Mission – 2.5 million^{[citation needed]}
• Christian Congregation in Brazil – 2.3 million^[277]
• Church of God of Prophecy – 1.5 million^{[citation needed]}
• Heal Our Land [pt] – 1.5 million^[278]
• Pentecostal Church in Indonesia – 1.5 million^{[citation needed]}
• Apostolic Faith Mission of South Africa – 1.2 million^{[citation needed]}
• God is Love Pentecostal Church – +1 million^[279]
• Association of Pentecostal Churches of Rwanda – 1 million^{[citation needed]}
• Jesus Is Lord Church Worldwide – 1 million^{[citation needed]}
• Maranatha Christian Church [pt] – 0.75 million^[280]
• Pentecostal Church of God – 0.5 million^[281]
• Indian Pentecostal Church of God – 0.5 million^{[citation needed]}
• Association of Vineyard Churches – 0.3 million^[282]
• Worldwide Church of God's Power – 0.3 million^[283]

• Calvary Chapel Association – 25 million^{[citation needed]}
• Alliance World Fellowship – 6 million^[284]
• Born Again Movement – 3 million^[285]
• Church of God (Anderson, Indiana) – 1.2 million^{[citation needed]}

60 million people are members of African initiated churches.^[286]

• Zion Christian Church – 15 million^{[citation needed]}
• Cherubim and Seraphim – 10 million^{[citation needed]}
• Kimbanguist Church – 5.5 million^{[citation needed]}
• Redeemed Christian Church of God – 5 million^[287]
• Church of the Lord (Aladura) – 3.6 million^[288]
• Council of African Instituted Churches – 3 million^[289]
• Church of Christ Light of the Holy Spirit – 1.4 million^[290]
• African Church of the Holy Spirit – 0.7 million^[291]
• African Israel Church Nineveh – 0.5 million^[292]

The New Apostolic Church has around 10 million members.^[294]

Messianic Judaism has a membership of 0.3 million people.^[295]

Eastern Protestant Christianity (or Eastern Reformed Christianity) encompasses a range of heterogeneous Protestant Christian denominations that developed outside of the Occident, from the latter half of the nineteenth century and yet keeps elements of Eastern Christianity, to varying degrees. Most of these denominations came into being when existing Protestant Churches adopted reformational variants of Eastern Orthodox liturgy and worship; while others are the result of reformations of Eastern Orthodox beliefs and practices, inspired by the teachings of Western Protestant missionaries.^{[296][297][298]} Some Protestant Eastern Churches are in communion with similar Western Protestant Churches.^[296][299] However, Protestant Eastern Christianity within itself, does not constitute a single communion. This is due to the diverse polities, practices, liturgies and orientations of the denominations which fall under this category.

• Ethiopian–Eritrean Evangelical Church – 16.5 million, Alexandrian Rite^{[citation needed]}
• Believers Eastern Church – 3.5 million, West Syrian Rite^{[citation needed]}
• Mar Thoma Syrian Church – 1 million, Syro-Antiochene Rite^[300][301] (in communion with the Anglican Communion)^[302]
• Armenian Evangelical Church – 0.25 million, Armenian Rite^{[citation needed]}
• St. Thomas Evangelical Church of India – 0.1 million, Syro-Antiochene Rite^{[citation needed]}
• Evangelical Church of the Augsburg Confession in Slovenia – 0.02 million, Byzantine Rite^[303]
• Evangelical Church of Romania – 0.16 million, Byzantine Rite^{[citation needed]}
• Kosovo Protestant Evangelical Church – 0.15 million, Byzantine Rite^[304]

The best estimate of the number of Eastern Orthodox Christians is 220 million^[305] or 80% of all Eastern Orthodox Christians worldwide.^{[clarification needed][306]} Its main body consists of the various autocephalous churches along with the autonomous and other churches canonically linked to them, for the most part form a single communion, making the Eastern Orthodox Church the second largest single denomination behind the Catholic Church.^[269][307] In addition, there are several Eastern Orthodox splinter groups and non-universally recognized churches.

• Russian Orthodox Church – 100 million^{[306][308][309][310][305]}
• Romanian Orthodox Church – 17–18.8 million^{[311][312][313]}
• Church of Greece – 10 million^[311]
• Serbian Orthodox Church – 8–12 million^[311][314]
• Bulgarian Orthodox Church – 8–10 million^{[citation needed]}
• Ecumenical Patriarchate of Constantinople – 5.45 million^[311][315]
• Greek Orthodox Patriarchate of Antioch – 4.3 million^[311]
• Georgian Orthodox Church – 3.5 million^{[citation needed]}
• Greek Orthodox Patriarchate of Alexandria – 2.95 million^{[316][317][318][319][320]}
• Macedonian Orthodox Church – 2 million^[321]
• Church of Cyprus – 0.7 million^[322]
• Polish Orthodox Church – 0.6 million^[311]
• Albanian Orthodox Church – 0.4 million^[311]
• Greek Orthodox Patriarchate of Jerusalem – 0.4 million^[311]
• Orthodox Church of the Czech Lands and Slovakia – 0.075 million^[311]

• Metropolitan Church of Chișinău and All Moldova (Moscow Patriarchate) – 3.2 million^{[citation needed]}
• Russian Orthodox Church Outside of Russia – 0.4 million^[323][324]
• Metropolitan Church of Bessarabia (Moldova) (Romanian Patriarchate) – 0.72 million^[325]
• Estonian Orthodox Church of the Moscow Patriarchate – 0.3 million^{[citation needed]}
• Orthodox Church of Finland (Ecumenical Patriarchate) – 0.06 million^[311]
• Chinese Orthodox Church (Moscow Patriarchate) – 0.03 million^{[citation needed]}
• Orthodox Church in Japan (Moscow Patriarchate) – 0.03 million^[311]
• Estonian Apostolic Orthodox Church (Ecumenical Patriarchate of Constantinople) – 0.02 million^{[citation needed]}

• Orthodox Church of Ukraine – 15 million (recognized its autocephaly by four churches, not recognized by most all other churches)^{[citation needed]}
• Ukrainian Orthodox Church (Moscow Patriarchate) – 5 million (recognized as self-governing church under the Moscow Patriarchate by majority of the churches; rival church to OCU by four churches and the Ukrainian government; declared independence from the MP in 2022 which is yet to be acknowledged by these churches)^{[326][327][clarification needed]}
• Orthodox Church in America – 0.09 million (recognized by all churches, partially recognized autocephaly)^[328]
• Latvian Orthodox Church – 0.02 million (recognized as a self-governing church under the Moscow Patriarchate by all churches; disputed autocephaly)^{[citation needed]}

• Belarusian Autocephalous Orthodox Church – 2.4 million^{[citation needed]}
• Orthodox Church of Greece (Holy Synod in Resistance) – 0.75 million^{[citation needed]}
• Old Calendar Bulgarian Orthodox Church – 0.45 million^{[citation needed]}
• Orthodox Church in Italy – 0.12 million^{[citation needed]}
• Old Calendar Orthodox Church of Romania – 0.05 million^{[citation needed]}
• Montenegrin Orthodox Church – 0.05 million^{[citation needed]}

• Old Believers – 5.5 million^{[citation needed]}
• Old Calendarists – 1.2–2 million^{[citation needed]}
• True Orthodox church – 0.85 million^{[citation needed]}
• Evangelical Orthodox Church – 0.07 million^{[citation needed]}
• Autocephalous Turkish Orthodox Patriarchate – 0.002^{[citation needed]}

The Oriental Orthodox Churches are those descended from those that rejected the Council of Chalcedon in 451. Despite the similar name, they are therefore a different branch of Christianity from the Eastern Orthodox (see above). There are an estimated 62 million Oriental Orthodox Christians, worldwide.^{[329][330][331]}

• Ethiopian Orthodox Tewahedo Church – 37 million^{[332][333][334][335][336]}
• Coptic Orthodox Church – 10 million^{[337][338][339][340][341]}
• Armenian Apostolic Church – 9 million^[342][343]
  • Mother See of Holy Etchmiadzin – 6 million^{[citation needed]}
  • Holy See of Cilicia – 0.3 million^[344]
  • Armenian Patriarchate of Constantinople – 0.095 million^{[citation needed]}
  • Armenian Patriarchate of Jerusalem – 0.034 million^{[citation needed]}
• Eritrean Orthodox Tewahedo Church – 2 million^[345]
• Malankara Orthodox Syrian Church – 2 million^[346]
• Syriac Orthodox Church – 1.4 million^[347][348]
  • Jacobite Syrian Christian Church – 1.2 million^[349]

• French Coptic Orthodox Church – 0.01 million^{[citation needed]}

• Malabar Independent Syrian Church – 0.06 million^{[citation needed]}
• British Orthodox Church – 0.01 million^{[citation needed]}
• Albanian-Udi Church – 0.006 million^[350]

A sixth group is composed by Nontrinitarian Restorationists. These groups are predominantly unitarian and are quite distinct from orthodox Trinitarian restorationist groups such as the Disciples of Christ, despite some shared history.

• United Pentecostal Church International – 5.8 million^[352]
• Pentecostal Assemblies of the World – 2 million^[353]
• True Jesus Church – 1.5–3 million^[354]
• IEANJESUS – 0.2 million^[355]
• Apostolic Assembly of the Faith in Christ Jesus – 0.2 million^[356]

• The Church of Jesus Christ of Latter-day Saints – 17.5 million^[357]
• Community of Christ – 0.25 million^[358] (Trinitarian Mormonism)

• Iglesia ni Cristo – 3+ million^{[citation needed]}
• Unification Church (aka Moonies) – 1–2 million^[360]
  • World Peace and Unification Sanctuary Church – 0.003 million^{[citation needed]}
• La Luz del Mundo – 1–5 million (see La Luz del Mundo#Membership statistics)
• Unitarian Universalism – 0.6 million^[361]
  • Unitarian Universalist Association – 0.1 million^[362]
    Note: Unitarian Universalism developed out of Christian traditions but no longer identifies as a Christian denomination.
• Church of Christ, 4th Watch – 0.6 million^{[citation needed]}
• Church of Christ, Scientist – 0.1 million^[363]
• World Mission Society Church of God – 0.1 million^[364]
• Friends of Man – 0.07 million^{[citation needed]}
• Christadelphians – 0.05 million^[365]
• The Family International – 0.01 million^{[citation needed]}

Various denominations that self-identify as Catholic, despite not being affiliated with the Catholic Church.^[366]

• Philippine Independent Church – 6 million^[367] (in communion with the Anglican Communion)^[302]
• Catholic Patriotic Association – 5 million^[368]
• Apostolic Catholic Church – 5 million^[369]
• Traditionalist Mexican-American Catholic Church – 2 million^{[citation needed]}
• Brazilian Catholic Apostolic Church – 0.56 million^[277]
• Union of Utrecht of the Old Catholic Churches – 0.1 million (in communion with the Anglican Communion)^[302]
  • Polish-Catholic Church in the Republic of Poland – 0.02 million^[370]
  • Catholic Diocese of the Old Catholics in Germany – 0.02 million^[371][372]
  • Old Catholic Church of the Netherlands – 0.01 million^[373]
  • Christian Catholic Church of Switzerland – 0.01 million^[374]
  • Old Catholic Church of Austria – 0.005 million^[375]
  • Old Catholic Church of the Czech Republic – 0.003 million^[376]
• Union of Scranton – 0.03 million
  • Polish National Catholic Church – 0.03 million^[377]
  • Nordic Catholic Church
• Palmarian Christian Church – 0.002 million^[378]

A seventh group is composed of independent Assyrian churches, with roots in Nestorianism. Divisions occurred within the Church of the East, especially the schism of 1552, but by 1830 two unified patriarchates and distinct churches remained: the Assyrian Church of the East and the Chaldean Catholic Church (now an Eastern Catholic Church in communion with the Holy See). The Assyrian Church of the East experienced a schism in 1964, leading to the organization of the Ancient Church of the East, following modernizing and other measures in the Assyrian Church.

• Assyrian Church of the East – 0.5 million^[379][380]
  • Chaldean Syrian Church – 0.01 million^[381]
• Ancient Church of the East – 0.1 million^[382]

• United Church of God – 0.015 million^{[citation needed]}
• General Conference of the Church of God (Seventh Day) – 0.014 million^[383]
• Living Church of God – 0.011 million^{[citation needed]}

• Schism in Christianity
• List of Christian denominations
• List of current Christian leaders
• List of the largest Protestant denominations
• List of largest church buildings

• Yearbook of American and Canadian Churches
• National Council of Churches USA
• Pew Research Center – News Release 2002 (archived 1 November 2006)
• Pew Research Center – 2015 America's Changing Religious Landscape
• Association of Religion Data Archives