Eastern Orthodoxy in Estonia

Eastern Orthodoxy in Estonia is practiced by 16.5% of the population as of 2011, making it the most identified religion and Christian denomination in this majority-secular state after surpassing Lutheran Christianity with 9.1% (which was previously 13.6% in 2000 census) for the first time in the country's modern history. Eastern Orthodox Christianity is mostly practiced within Estonia's Russian ethnic minority, with a smaller number of the ethnically Estonian population. According to the 2000 Estonian census, 72.9% of those who identified as Orthodox Christians were of Russian descent.

Today, there are two branches of the Eastern Orthodox Church operating in Estonia: the Estonian Apostolic Orthodox Church, an autonomous church under the Ecumenical Patriarchate of Constantinople, and the Estonian Orthodox Church of the Moscow Patriarchate, a semi-autonomous church of the Russian Orthodox Church.