Eparchy is an ecclesiastical unit in Eastern Christianity.

The term may also refer to:

Eparchy (Roman province), a Greek term for a province, in the Roman Republic and Empire Eparchy (Byzantine province), a Greek term for a province, in the early Byzantine Empire Praetorian eparchy, a Greek term for a praetorian prefecture, in the late Roman and early Byzantine empires Urban eparchy, a Greek term for jurisdiction under the praefectus urbi, in Constantinople and Rome Eparchy (modern Greece), an administrative unit in modern Greece Eparchy (modern Cyprus), an administrative unit in modern Cyprus

See also List of urban prefects of Constantinople Province (disambiguation)