List of Christian denominations by number of members

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 an ongoing work-in-progress.

The list includes the following Christian denominations: the Catholic Church including the Eastern Catholic Churches; all the Eastern Orthodox and Oriental Orthodox churches with some recognition and their offshoots; Protestant denominations with at least 0.2 million members; the provinces of the Anglican Communion with at least 0.2 million members; all the other Christian branches with distinct theologies, such as Restorationist and Nontrinitarianian denominations; the independent Catholic denominations; and the Church of the East. With about 2.42 billion adherents all over the world,[1] Christianity is the largest religious group in the world.

Christian denominational families

Major branches of Christianity.
Major branches and movements within Protestantism.