Largest religious organizations by membership

As of 2026-10-12, Lutheran World Federation tops the list with 77,000,000 members.

1. #1 Lutheran World Federation — 77,000,000 members

   global communion of national and regional Lutheran churches

   The Lutheran World Federation is a global communion of national and regional Lutheran denominations headquartered in the Ecumenical Centre in Geneva, Switzerland. The federation was founded in the Swedish city of Lund in the aftermath of the Second World War in 1947 to coordinate the activities of the many differing Lutheran churches. Since 1984, the member churches are in pulpit and altar fellowship, with common doctrine as the basis of membership and mission activity. Read more on Wikipedia.

   Wikidata
2. #2 Muhammadiyah — 60,000,000 members

   religious organizations in Indonesia

   Muhammadiyah, officially the Muhammadiyah Society, is a major Islamic mass organization in Indonesia. The organization was founded in 1912 by Ahmad Dahlan in the city of Yogyakarta as a reformist socio-religious movement. Muhammadiyah promotes ijtihad, the contextual and dynamic derivation of Islamic law directly from the Qur'an and sunnah, and rejects taqlid, blind adherence. Since its inception, Muhammadiyah has implemented a platform of renewal that integrates religious and secular... Read more on Wikipedia.

   Wikidata
3. #3 Jam’iyyah Ahlith Thariqah al-Mu’tabarah an-Nahdliyyah — 40,000,000 members

   religious organizations as a forum for practicing tariqa teachings

   source Wikidata
4. #4 The Church of Jesus Christ of Latter-day Saints — 17,002,461 members

   Christian restorationist denomination centered on the Book of Mormon

   The Church of Jesus Christ of Latter-day Saints, informally known as the LDS Church or Mormon Church, is the largest denomination in the Latter Day Saint movement. Founded during the Second Great Awakening, the church is headquartered in Salt Lake City, Utah, United States, and has established congregations and built temples worldwide. According to the church, as of 2024, it had more than 17.5 million members, of which more than 6.8 million live in the United States. The church also reports... Read more on Wikipedia.

   Wikidata
5. #5 Baháʼí Faith — 7,106,420 members

   monotheistic religion revealed by Bahāʾullāh

   The Baháʼí Faith is a religion established by Baháʼu'lláh in the 19th century that teaches the essential worth of all religions and the unity of all people. It initially developed in Iran and parts of Western Asia, where it has faced ongoing persecution since its inception. The religion has 7–8 million adherents, known as Baháʼís, who are spread throughout most of the world's countries and territories. Read more on Wikipedia.

   Wikidata
6. #6 Hokkekō — 628,000 members

   Hokkekō is the mainstream lay organization affiliated with the Nichiren Shōshū. It traces its origins to three martyr disciples who were arrowed and later beheaded in the Atsuhara persecutions and a more recent tradition of family lineages between 1726 and 1829 who have historically protected the Dai-Gohonzon over the centuries. Read more on Wikipedia.

   Wikidata
7. #7 Baptist Union of Uganda — 421,600 members

   Christian denomination in Uganda

   The Baptist Union of Uganda is a Baptist Christian denomination in Uganda. It is affiliated with the Baptist World Alliance. The headquarters is in Kampala. Read more on Wikipedia.

   Wikidata
8. #8 American Baptist Association — 275,000 members

   association of Missionary Baptist churches

   The American Baptist Association (ABA), founded in 1924, is a voluntary association of Missionary Baptist churches with its offices and a publishing house located in Texarkana, Texas, United States. Read more on Wikipedia.

   Wikidata
9. #9 Community of Christ — 250,000 members

   second-largest denomination in the Latter Day Saint movement

   The Community of Christ (CofC), known as the Reorganized Church of Jesus Christ of Latter Day Saints (RLDS) from 1872 to 2001, is a US-based international church, and is the second-largest denomination in the Latter Day Saint movement after the Church of Jesus Christ of Latter-day Saints. The church reports approximately 250,000 members in 1,100 congregations in 59 countries. The church traces its origins to Joseph Smith's establishment of the Church of Christ on April 6, 1830. His eldest son,... Read more on Wikipedia.

   Wikidata
10. #10 Uniting Church in Australia — 243,000 members

    Christian denomination

    The Uniting Church in Australia (UCA) is a united church in Australia. It is affiliated with the World Communion of Reformed Churches and the World Methodist Council. Read more on Wikipedia.

    Wikidata