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.
Estonian Orthodox Church of the Moscow Patriarchate
Under Estonian law, the "Estonian Apostolic Orthodox Church" (Eesti Apostlik-Õigeusu Kirik) is the legal successor to the pre-World War II Estonian Orthodox Church, which in 1940 had had over 210,000 faithful, three bishops, 156 parishes, 131 priests, 19 deacons, two monasteries, and a theological seminary, the majority of the faithful were ethnic Estonians. Its primate is confirmed by the Orthodox Church of Constantinople. The head of this church is Metropolitan Eugene who has been Metropolitan of Tallinn and All Estonia since 2018. This church numbers about 20,000 faithful in 60 congregations today.