Eastern Orthodoxy by country
Based on the numbers of adherents, the Eastern Orthodox Church (also known as Eastern Orthodoxy) is the second largest Christian communion in the world after the Roman Catholic Church. The most common estimates of the number of Eastern Orthodox Christians worldwide is approximately 200–260 million. The numerous Protestant groups in the world, if taken all together, outnumber the Eastern Orthodox, but they differ theologically and do not form a single communion.
List of Christian denominations
Some groups are large (e.g. Catholics, Orthodox, Lutherans, Anglicans or Baptists), while others are just a few small churches, and in most cases the relative size is not evident in this list except for the denominational group or movement as a whole (e.g. Church of the East, Oriental Orthodoxy, Lutheranism or the Latter Day Saints). The largest group is the Catholic Church with more than 1.29 billion members. The smallest of these groups may have only a few dozen adherents or an unspecified number of participants in independent churches as described below. As such, specific numbers and a certain size may not define a group as a denomination. However, as a general rule, the larger a group becomes, the more acceptance and legitimacy it gains.