Metropolis of Kiev, Galicia and all Rus' (1620–1686) in the context of "Mogilev"

In Christian churches with episcopal polity, the rank of metropolitan bishop, or simply metropolitan (alternative obsolete form: metropolite), is held by the diocesan bishop or archbishop of a metropolis.

Originally, the term referred to the bishop of the chief city of a historical Roman province, whose authority in relation to the other bishops of the province was recognized by the First Council of Nicaea (AD 325). The bishop of the provincial capital, the metropolitan, enjoyed certain rights over other bishops in the province, later called "suffragan bishops".

Petro Mohyla or Peter Mogila (21 December 1596 – 1 January [O.S. 22 December] 1647) was the Metropolitan of Kiev, Galicia and all Rus' in the Ecumenical Patriarchate of Constantinople in the Eastern Orthodox Church from 1633 to 1646.

The Metropolis of Kiev and all Rus' (Ukrainian: Митрополит Київський та всієї Русі, romanized: Mytropolyt Kyivskyi ta vsiiei Rusi) was a metropolis of the Eastern Orthodox Church that was erected on the territory of Kievan Rus'. It existed between 988 AD and 1590s AD. The long lasting "tug of war" between bishops from the Grand Duchy of Lithuania and bishops of the Principality of Moscow resulted in reorganization of the metropolis as the bishops from Moscow refused to recognize decisions of the Ecumenical Patriarch of Constantinople. Canonically, it was under the jurisdiction of the Ecumenical Patriarchate of Constantinople. The metropolitan seat (cathedra) was located in the city of Kiev until it was moved to Vladimir-na-Klyazme in 1299 and then Moscow in 1325.

The metropolis was later revived in the territory of the Polish–Lithuanian Commonwealth from 1620 AD to 1686 AD as an exarchate of the Ecumenical Patriarchate. Again, to reflect its exclusion from the Tsardom of Russia, this episcopal title was renamed the "Metropolis of Kiev, Galicia and all Rus'". The fate of the metropolis after that date is a matter of dispute: according to the Orthodox Church of Ukraine, the metropolis was uncanonically annexed or was in abeyance until it received the tomos of autocephaly from the Ecumenical Patriarch; on the other hand, the Russian Orthodox Church (ROC) maintains that it was absorbed by the Patriarchate of Moscow and all Rus' and is currently an exarchate of the ROC that styles itself on the Ukrainian Orthodox Church (Moscow Patriarchate) (UOC-MP).

The Metropolis of Kyiv (Greek: Μητρόπολις Κιέβου, romanized: Mitrópolis Kiévou; Ukrainian: Ки́ївська митропо́лія, romanized: Kyivska mytropoliia; Belarusian: Кіеўская мітраполія, Kijeŭskaja mitrapolija) was an autonomous metropolis of the Ecumenical Patriarchate of Constantinople with center in Kyiv after its formation in 988 as a result of the Christianization of Rus by Volodymyr the Great until January 6, 2019, when it received the Tomos on Autocephaly.

In 1596, the Union of Brest was adopted which transferred the ecclesiastical jurisdiction of the metropolis from the Ecumenical Patriarchate to the Holy See. As a sui juris Eastern Catholic particular church, the metropolis retained its ancient rights; in time, it came to be known as the Ruthenian Uniate Church. Some clergy and laity in the Commonwealth continued to give their loyalty to Constantinople but had no hierarchs to support them. In 1620, the Ukrainian Cossacks, led by Hetman Petro Konashevych-Sahaidachny, secured the restoration of the Orthodox hierarchy in the Commonwealth as the Metropolis of Kiev, Galicia and all Rus'.