Totals Per Capita - Orthodox Church 1 Russia 58.19 million 2014 2 Ethiopia 45 million 2014 (not "real" orthodox) (Tigray War 3 November 2020 - present) - Ethiopian Orthodox Tewahedo Church - Largest "Oriental" Orthodox Church 3 Romania 18.82 million 2014 (EU) 4 Ukraine 13.03 million 2014 (2014 - Present) 5 Greece 10.72 million 2014 (EU) 6 Egypt 7.61 million 2014 (Coptic religion) "Copic" 7 Serbia 6.37 million 2014 - 1991 to 2001 - https://en.wikipedia.org/wiki/Yugoslav_Wars 8 Bulgaria 5.59 million 2014 (EU) 9 United States 5.27 million 2014 10 Belarus 4.8 million 2014 (EU) 11 Kazakhstan 4.19 million 2014 (Post Soviet Union) 12 India 3.8 million 2014 (mixture) 13 Georgia 3.75 million 2014 (Post Soviet Union) 14 Moldova 3.32 million 2014 (Transnistria War) 1990-1992 15 Armenia 3.22 million 2014 (2020 Nagorno-Karabakh war) 16 Eritrea 3.03 million 2014 (Heretics) 17 Syria 1.8 million 2014 18 Bosnia and Herzegovina 1.35 million 2014 (1992-1995) 19 Republic of Macedonia 1.31 million 2002 (2001 insurgency in Macedonia) 20 Lebanon 851,000 2014