Orsk
Vicariate of Orenburg
Bishops 3
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1922 – 12 January 1924
Aristarkh Nikolayevskii 1867–1937
Bishop
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19 March 1923 – 1923
Iakov Maskayev 1878–1937
Bishop
-
12 January 1924 – 1924
Aristarkh Nikolayevskii 1867–1937
Archbishop
In the order of their start dates; bishops whose dates are unknown come last. Gaps are periods the data does not yet cover.