eparchy

A district of the Roman Empire at the third echelon

A provincial government or office headed by an eparch in the Greek-speaking Eastern Roman Empire (akin to a prefecture governed by a prefect in the Latin-speaking Western Roman Empire)

An administrative sub-provincial unit in post-Ottoman independent Greece.

In pre-schism Christian Church, a province under the supervision of the metropolitan.

In Eastern Christendom, a diocese of a bishop.