The main Orthodox churches in Italy are as follows:
The Greek Orthodox Archdiocese of Italy and Exarchate of Southern Europe, a diocese of the Ecumenical Patriarchate of Constantinople, officially recognized by the Italian government under the otto per mille scheme
Macedonian Orthodox Church - Metropolitan of Europe
Romanian Orthodox Diocese of Italy, a diocese of the Romanian Metropolis of Western and Southern Europe
Serbian Orthodox Church - Serbian Orthodox Eparchy for Austria, Switzerland and Italy
Parishes of the Russian Orthodox Church
the Patriarchal Metropolitan of Aquilea, and independent organization founded in 1983 by Evloghios, a priest of a Russian parish in Milan, following the Old Calendarist tradition, with followers in Italy, Switzerland, France, and North America
the Orthodox Church in Italy, an independent organization