List of Christian denominations by number of members

This article gives information about the relative size of denominations, based mainly on claims by the churches themselves.
Christian denominational families
Christianity - 2.51 billion
Catholicism - 1.329 billion
Catholicism is the largest branch of Christianity with 1.329 billion and the Catholic Church is the largest among churches. Figures below are in accordance with the Annuario Pontificio, at 2018. The total figure does not include independent Catholic denominations (18 million).
Latin Church - 1.311 billion
Eastern Catholic Churches - 18 million
Byzantine Rite - 8.2 million
Ukrainian Greek Catholic Church - 5.5 million
Melkite Greek Catholic Church - 1.6 million
Romanian Greek Catholic Church - 0.5 million
Ruthenian Greek Catholic Church - 0.4 million
Hungarian Greek Catholic Church - 0.3 million
Slovak Greek Catholic Church - 0.3 million
Belarusian Greek Catholic Church - 0.1 million
Italo-Albanian Catholic Church - 0.01 million
Greek Catholic Church of Croatia and Serbia - 0.01 million
Georgian Byzantine Catholic Church - 0.01 million;
Albanian Greek Catholic Church - 0.01 million
Russian Greek Catholic Church - 0.01 million
Macedonian Greek Catholic Church - 0.001 million
Bulgarian Greek Catholic Church - 0.001 million
Greek Byzantine Catholic Church - 0.001 million
East Syriac Rite - 4.9 million
Syro-Malabar Catholic Church - 4.3 million
Chaldean Catholic Church - 0.6 million
West Syriac Rite - 4.2 million
Maronite Church - 3.5 million
Syro-Malankara Catholic Church - 0.5 million
Syriac Catholic Church - 0.2 million
Armenian Rite - 0.8 million
Armenian Catholic Church - 0.8 million
Alexandrian Rite - 0.5 million
Coptic Catholic Church - 0.2 million
Eritrean Catholic Church - 0.2 million
Ethiopian Catholic Church - 0.1 million
Canonically irregular groups
Society of Saint Pius X - 1 million (claimed)
Independent Catholicism - 18 million
Various denominations self-identifying as Catholic, despite not being affiliated with the Catholic Church.
Philippine Independent Church - 6 million (Part of the Anglican Communion)
Chinese Patriotic Catholic Association - 6 million
Brazilian Catholic Apostolic Church - 5 million
Traditionalist Mexican-American Catholic Church - 2 million
Old Catholic Church - 0.1 million (Part of the Anglican Communion)
Polish National Catholic Church - 0.03 million
Apostolic Catholic Church - 0.005 million
Palmarian Catholic Church - 0.002 million
Protestantism - 900 million
Protestantism is the second largest major group of Christians by number of followers. Estimates vary from 800 million to a billion, or nearly 40% of all Christians. 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 but not all include Anabaptism, Anglicanism, Baptists and Independent Nondenominational Christianity as part of Protestantism. 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 Anglican Communion, World Communion of Reformed Churches, World Baptist Alliance, World Methodist Council and the World Lutheran 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 Anglicanism, as well as Anabaptists, Baptists and multiple other groups that might sometimes disavow a common "Protestant" designation, and would rather prefer to be called, simply, "Christian".
Historical Protestantism - 300-400 million
The number of individuals who are members of historical Protestant Churches totals to 300-400 million.
Anglicanism - 110 million
There are about 110 million Christians in Anglican tradition, mostly part of the Anglican Communion, the third largest Christian denomination in the world.
Anglican Communion - 85 million
Church of England - 25.0 million
Church of Nigeria - 20.1 million
Church of Uganda - 11.1 million
Anglican Church of Kenya - 5.0 million
Episcopal Church of South Sudan and Sudan - 4.5 million
Church of South India - 3.8 million
Anglican Church of Australia - 3.1 million
Anglican Church of Southern Africa - 2.3 million
Anglican Church of Tanzania - 2.0 million
Episcopal Church in the United States - 1.8 million
Church of North India - 1.5 million
Anglican Church of Rwanda - 1.0 million
Church of the Province of Central Africa - 0.9 million
Anglican Church of Burundi - 0.8 million
Church in the Province of the West Indies - 0.8 million
Anglican Church in Aotearoa, New Zealand and Polynesia - 0.5 million
Church of the Province of the Indian Ocean - 0.5 million
Church of Christ in Congo-Anglican Community of Congo - 0.5 million
Church of Pakistan - 0.5 million
Church of Ireland - 0.4 million
Anglican Church of Canada - 0.4 million
Church of the Province of West Africa - 0.3 million
Anglican Church of Melanesia - 0.2 million
Episcopal Church in the Philippines - 0.1 million
Continuing Anglican movement and independent churches - 0.4 million
Traditional Anglican Communion - 0.4 million
Anglican Church in North America - 0.09 million
Reformed Evangelical Anglican Church of South Africa - 0.09 million
Baptist churches - 75-105 million
The number of individuals who hold membership in the Baptist denomination totals to 75-105 million, being represented in the following Churches:
Southern Baptist Convention - 14.5 million
National Baptist Convention, USA, Inc. - 7.5 million
Nigerian Baptist Convention - 6.5 million
National Missionary Baptist Convention of America - 3.1 million
National Baptist Convention of America, Inc. - 3.1 million
Baptist Union of Uganda - 2.5 million
Baptist Community of Congo - 2.1 million
Baptist Convention of Tanzania - 2.0 million
Baptist General Convention of Texas - 2.0 million
Brazilian Baptist Convention - 1.6 million
Progressive National Baptist Convention - 1.5 million
Council of Baptist Churches in Northeast India - 1.3 million
American Baptist Churches USA - 1.2 million
Baptist Bible Fellowship International - 1.2 million
Lott Carey Foreign Mission Convention - 1.1 million
Baptist Community of the Congo River - 1.1 million
National Primitive Baptist Convention of the U.S.A. - 1.0 million
Myanmar Baptist Convention - 1.0 million
Cooperative Baptist Fellowship - 0.8 million
Baptist General Association of Virginia - 0.6 million
Baptist Convention of Kenya - 0.6 million
Nagaland Baptist Church Council - 0.6 million
Korea Baptist Convention - 0.5 million
Samavesam of Telugu Baptist Churches - 0.5 million
Orissa Evangelical Baptist Crusade - 0.5 million
National Baptist Convention (Brazil) - 0.4 million
Baptist Convention of Malawi - 0.3 million
Garo Baptist Convention - 0.3 million
Convention of Philippine Baptist Churches - 0.3
Ghana Baptist Convention - 0.3
Union of Baptist Churches in Rwanda - 0.3 million
Conservative Baptist Association of America - 0.2 million
National Association of Free Will Baptists - 0.2 million
Convention of Visayas and Mindanao of Southern Baptist Churches - 0.2 million
Manipur Baptist Convention - 0.2 million
Evangelical Baptist Church of the Central African Republic - 0.2 million
Converge - 0.2 million
Seventh Day Baptists - 0.05 million
Lutheranism - 70-90 million
The number of adherents in the Lutheran denomination totals to 70-90 million persons, being represented in the following Churches:
Evangelical Church in Germany - 21.1 million (10.5 million United Protestants, i.e. Lutheran & Reformed; 10.3 million Lutherans; 0.3 million Reformed)
Ethiopian Evangelical Church Mekane Yesus - 8.3 million
Evangelical Lutheran Church in Tanzania - 6.5 million
Church of Sweden - 5.8 million
United Evangelical Lutheran Churches in India - 4.5 million
Church of Denmark - 4.3 million
Batak Christian Protestant Church - 4.0 million
Evangelical Lutheran Church of Finland - 3.8 million
Church of Norway - 3.7 million
Evangelical Lutheran Church in America - 3.4 million
Malagasy Lutheran Church - 3.0 million
The Lutheran Church of Christ in Nigeria - 2.2 million
Lutheran Church-Missouri Synod - 2.0 million
Evangelical Lutheran Church of Papua New Guinea - 1.2 million
Evangelical Lutheran Church in Namibia - 0.7 million
Evangelical Church of the Lutheran Confession in Brazil - 0.6 million
Evangelical Lutheran Church in Southern Africa - 0.6 million
The Protestant Christian Church - 0.5 million
Evangelical Lutheran Church in the Republic of Namibia - 0.4 million
Wisconsin Evangelical Lutheran Synod - 0.4 million
Evangelical Free Church of America - 0.4 million
The Indonesian Christian Church - 0.3 million
Lutheran Congregations in Mission for Christ - 0.3 million
Evangelical Lutheran Church of Cameroon - 0.3 million
Evangelical Church of the Augsburg Confession in Austria - 0.3 million
Evangelical Lutheran Church in Zimbabwe - 0.3 million
Evangelical Lutheran Church of Latvia - 0.3 million
Christian Protestant Church in Indonesia - 0.3 million
Church of Iceland - 0.2 million
Simalungun Protestant Christian Church - 0.2 million
Evangelical Lutheran Church of Brazil - 0.2 million
Protestant Church of Augsburg Confession of Alsace and Lorraine - 0.2 million
Evangelical Church of the Augsburg Confession in Slovakia - 0.2 million
Evangelical-Lutheran Church in Hungary - 0.2 million
Estonian Evangelical Lutheran Church - 0.2 million
Reformed churches (Calvinism) - 60-80 million
The Reformed tradition is represented by 60-80 million people who hold membership in the following Churches:
Presbyterianism - 40 million
Presbyterian Church of East Africa - 4.0 million
Presbyterian Church of Nigeria - 3.8 million
Presbyterian Church of Africa - 3.4 million
National Presbyterian Church in Mexico - 2.8 million
Presbyterian Church in Korea (HapDong) - 2.6 million
Presbyterian Church of Korea (TongHap) - 2.5 million
Church of Christ in Congo-Presbyterian Community of Congo - 2.5 million
Presbyterian Church of Cameroon - 1.8 million
Presbyterian Church in Korea (BaekSeok) - 1.5 million
Presbyterian Church (USA) - 1.4 million
Presbyterian Church of India - 1.3 million
Church of Central Africa Presbyterian - 1.3 million
Presbyterian Church in Sudan - 1.0 million
Presbyterian Church in Cameroon - 0.7 million
Presbyterian Church of Brazil - 0.7 million
Evangelical Presbyterian Church, Ghana - 0.6 million
United Church of Christ in the Philippines - 0.5 million
Uniting Presbyterian Church in Southern Africa - 0.5 million
United Church of Canada - 0.4 million
Presbyterian Church in America - 0.4 million
Presbyterian Church of Pakistan - 0.4 million
Presbyterian Church in Korea (Koshin) - 0.4 million
Church of Scotland - 0.3 million
Korean Presbyterian Church - 0.3 million
Presbyterian Church in Rwanda - 0.3 million
Uniting Church in Australia - 0.2 million
Presbyterian Church in Taiwan - 0.2 million
Presbyterian Church in Ireland - 0.2 million
Continental Reformed churches - 30 million
Church of Jesus Christ in Madagascar - 3.5 million
Protestant Church in Indonesia - 3.1 million
United Church in Zambia - 3.0 million
Evangelical Church of Cameroon - 2.5 million
Swiss Reformed Church - 2.4 million
Christian Evangelical Church in Timor - 2.0 million
Protestant Church in the Netherlands - 1.8 million
Dutch Reformed Church in South Africa (NGK) - 1.1 million
Christian Evangelical Church in Minahasa - 0.7 million
United Church in Papua New Guinea and the Solomon Islands - 0.6 million
Protestant Church in Western Indonesia - 0.6 million
Evangelical Christian Church in Tanah Papua - 0.6 million
Protestant Church of Maluku - 0.6 million
Reformed Church in Hungary - 0.6 million
Reformed Church in Romania - 0.6 million
Uniting Reformed Church in Southern Africa - 0.5 million
Toraja Church - 0.4 million
Reformed Church of France - 0.4 million
Lesotho Evangelical Church - 0.3 million
Evangelical Christian Church in Halmahera - 0.3 million
Christian Church of Sumba - 0.3 million
Karo Batak Protestant Church - 0.3 million
Christian Reformed Church of Nigeria - 0.3 million
Reformed Church in Zambia - 0.3 million
Evangelical Reformed Church in Angola - 0.2 million
Reformed Church in America - 0.2 million
Christian Reformed Church in North America - 0.2 million
Kalimantan Evangelical Church - 0.2 million
Javanese Christian Church - 0.2 million
Indonesia Christian Church - 0.2 million
Church of Christ in the Sudan Among the Tiv - 0.2 million
Church of Lippe - 0.2 million
Evangelical Church of Congo - 0.2 million
Christian Evangelical Church of Sangihe Talaud - 0.2 million
Central Sulawesi Christian Church - 0.2 million
Evangelical Reformed Church in Bavaria and Northwestern Germany - 0.2 million
Congregationalism - 5 million
Evangelical Congregational Church in Angola - 0.9 million
United Church of Christ - 0.8 million
United Congregational Church of Southern Africa - 0.5 million
Methodism - 60-80 million
The number of members in the Methodist denomination totals to 60-80 million people, being represented in the following Churches:
United Methodist Church - 12 million
African Methodist Episcopal Church - 2.5 million
Church of the Nazarene - 2 million
Methodist Church Nigeria - 2 million
The Salvation Army - 1.8 million
Methodist Church of Southern Africa - 1.7 million
Korean Methodist Church - 1.5 million
African Methodist Episcopal Zion Church - 1.4 million
United Methodist Church of Ivory Coast - 1 million
Free Methodist Church - 0.9 million
Christian Methodist Episcopal Church - 0.9 million
Methodist Church Ghana - 0.8 million
Methodist Church in India - 0.6 million
Methodist Church in Kenya - 0.5 million
Wesleyan Church - 0.4 million
Methodist Church of Great Britain - 0.2 million
Methodist Church in Brazil - 0.2 million
Seventh-day Adventist Church - 21.4 million
The Seventh-day Adventist Church has a membership of 21.4 million people.
Restoration Movement - 7 million
Churches of Christ - 5 million
Churches of Christ in Australia - 0.05 million
Christian churches and churches of Christ - 1.1 million
Community of Disciples of Christ in Congo - 0.7 million
Christian Church (Disciples of Christ) - 0.4 million
Anabaptism - 4 million
Mennonites - 2.1 million
Schwarzenau Brethren (German Baptists) - 1.5 million
Amish - 0.3 million
Hutterites - 0.05 million
Plymouth Brethren - 1 million
The Plymouth Brethren number around 1 million members.
Hussites - 1 million
Moravians - 0.825 million
Czechoslovak Hussite Church - 0.14 million
Unity of the Brethren - 0.035 million
Quakers - 0.4 million
Modern Protestantism - 400-500 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. For this reason, several sources tend to differentiate them from Protestants and classify them as together as Independents, Non-core Protestants etc. Also included in this category are the numerous, yet very similar Nondenominational churches. Nonetheless, sources eventually combine their numbers to the Protestant tally. 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. According to the Center for the Study of Global Christianity (CSGC), there are an estimated 450 million Independents world-wide, as of mid-2019.
Pentecostalism - 280 million
Those who are members of the Pentecostal denomination number around 280 million people.
Assemblies of God - 68.5 million
Apostolic Church - 15 million
International Circle of Faith - 11 million
Fangcheng Fellowship - 10 million
China Gospel Fellowship - 10 million
Church of God (Cleveland, Tennessee) - 6 million
International Church of the Foursquare Gospel - 9 million
Church of God in Christ - 6.5 million
Jesus Is Lord Church Worldwide - 5 million
International Pentecostal Holiness Church - 4 million
The Pentecostal Mission - 2.5 million
Christian Congregation of Brazil - 2.5 million
True Jesus Church - 2.5 million
The Church of Pentecost - 2.1 million
Universal Church of the Kingdom of God - 2 million
Apostolic Faith Mission of South Africa - 1.2 million
Church of God of Prophecy - 1.5 million
Association of Pentecostal Churches of Rwanda - 1 million
God is Love Pentecostal Church - 0.8 million
Association of Vineyard Churches - 0.3 million
Nondenominational Christianity - 80-100 million
Calvary Chapel - 25 million
Christian and Missionary Alliance - 6 million
Born Again Movement - 3 million
Church of God (Anderson, Indiana) - 1.2 million
African initiated churches - 60 million
60 million people are members of African initiated churches.
Zion Christian Church - 15 million
Eternal Sacred Order of Cherubim and Seraphim - 10 million
Kimbanguist Church - 5.5 million
Redeemed Christian Church of God - 5 million
Church of the Lord (Aladura) - 3.6 million
Council of African Instituted Churches - 3 million
Church of Christ Light of the Holy Spirit - 1.4 million
African Church of the Holy Spirit - 0.7 million
African Israel Church Nineveh - 0.5 million
Chinese Patriotic Christian Churches - 38 million
New Apostolic Church - 10 million
The New Apostolic Church has around 10 million members.
Local churches - 1 to 10 million
Eastern Orthodoxy - 230 million
The best estimate of the number of Eastern Orthodox Christians is 210-230 million or 80% of all Orthodox Christians worldwide. 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. In addition, there are several Eastern Orthodox splinter groups and non-universally recognized churches.
Autocephalous churches - 166 million
Russian Orthodox Church - 100 million
Romanian Orthodox Church - 17-18.8 million
Church of Greece - 10 million
Serbian Orthodox Church - 8-12 million
Bulgarian Orthodox Church - 8-10 million
Ecumenical Patriarchate of Constantinople - 5.25 million
Greek Orthodox Church of Antioch - 4.3 million
Georgian Orthodox Church - 3.5 million
Church of Cyprus - 0.7 million
Polish Orthodox Church - 0.6 million
Greek Orthodox Church of Alexandria - 0.5 million
Albanian Orthodox Church - 0.4 million
Greek Orthodox Church of Jerusalem - 0.4 million
Czech and Slovak Orthodox Church - 0.075 million
Autonomous churches - 13 million
Ukrainian Orthodox Church (Moscow Patriarchate) - 7.2 million
Metropolitan Church of Chisinau and All Moldova (Moscow Patriarchate) - 3.2 million
Russian Orthodox Church Outside Russia - 0.4 million
Metropolitan Church of Bessarabia (Moldova) (Romanian Patriarchate) - 0.72 million
Orthodox Ohrid Archbishopric (North Macedonia) - 0.34 million
Estonian Orthodox Church (Moscow Patriarchate) - 0.3 million
Finnish Orthodox Church (Ecumenical Patriarchate) - 0.06 million
Chinese Orthodox Church (Moscow Patriarchate) - 0.03 million
Japanese Orthodox Church (Moscow Patriarchate) - 0.03 million
Latvian Orthodox Church (Moscow Patriarchate) - 0.02 million
Estonian Orthodox Church (Ecumenical Patriarchate) - 0.02 million
Churches in communion with the above Orthodox Churches but with disputed autocephaly - 1 million
Orthodox Church in America - 1 million
Non-universally recognized churches - 18-24.27 million
Orthodox Church of Ukraine - 12-18 million
Belarusian Autocephalous Orthodox Church - 2.4 million
Macedonian Orthodox Church - 2 million
Orthodox Church of Greece (Holy Synod in Resistance) - 0.75 million
Old Calendarist Romanian Orthodox Church - 0.50 million
Old Calendar Bulgarian Orthodox Church - 0.45 million
Orthodox Church in Italy - 0.12 million
Montenegrin Orthodox Church - 0.05 million
Other separated Orthodox groups - 6 million
Old Believers - 5.5 million
Greek Old Calendarists - 0.86 million
True Orthodox Church - 0.85 million
Evangelical Orthodox Church - 0.07 million
Oriental Orthodoxy - 62 million
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.
Autocephalous churches - 61.7 million
Ethiopian Orthodox Tewahedo Church - 37 million
Coptic Orthodox Church of Alexandria - 10 million
Armenian Apostolic Church - 9 million
Mother See of Holy Etchmiadzin - 6 million
Holy See of Cilicia - 1.5 million
Armenian Patriarchate of Constantinople - 0.5-0.7 million
Armenian Patriarchate of Jerusalem - 0.34 million
Syriac Orthodox Church - 1.7 million
Jacobite Syrian Christian Church - 1.2 million
Eritrean Orthodox Tewahedo Church - 2 million
Malankara Orthodox Syrian Church - 2 million
Autonomous churches - 0.01 million
French Coptic Orthodox Church - 0.01 million
Churches not in communion - 0.07 million
Malabar Independent Syrian Church - 0.06 million
British Orthodox Church - 0.01 million
Non-trinitarian Restorationism - 35 million
A sixth group is composed by Non-trinitarian Restorationists. These groups are quite distinct from orthodox Trinitarian restorationist groups such as the Disciples of Christ, despite some shared history.
Latter Day Saint movement (Mormonism) - 16.7 million
The Church of Jesus Christ of Latter-day Saints - 16.5 million
Community of Christ - 0.25 million
Jehovah's Witnesses - 8.5 million
Oneness Pentecostalism - 6 million
United Pentecostal Church International - 4 million
Pentecostal Assemblies of the World - 1.5 million
Minor denominations - 4.4 million
Iglesia ni Cristo - 2.3 million
The Unification Church (aka Moonies) - 1-2 million
La Luz del Mundo - around million (See La Luz del Mundo#Statistics)
Unitarian Universalism - 0.6 million
Unitarian Universalist Association - 0.2 million(Unitarian Universalism developed out of Christian traditions but no longer identifies as a Christian denomination.)
Church of Christ, Scientist - 0.4 million
Friends of Man - 0.07 million
Christadelphians - 0.06 million
Family International - 0.01 million
Miscellaneous branches - 2 million
Protestant Eastern Christianity - 1.1 million
Mar Thoma Syrian Church - 1.1 million
Former Church of the East (Nestorianism) - 0.6 million
Assyrian Church of the East - 0.5 million
Ancient Church of the East - 0.1 million
Messianic Judaism - 0.3 million
References
Other websites
Adherents.com
Yearbook of American and Canadian Churches
National Council of Churches USA
Pew Research Center
Religion-related lists