Its uses the Byzantine Rite in the Romanian language in its liturgical services.

It is a suffragan diocese of the Major Archeparchy of Făgăraș and Alba Iulia.

When it was founded in 1777, followers of the Greek Rite having been up to that time under the jurisdiction of the Latin bishop.

Originally the see was a suffragan of Esztergom (Gran); when, however, in 1853 the Greek Catholic Diocese of Făgăraș and Alba Iulia became the Archdiocese of Făgăraș and Alba Iulia, the diocese of Oradea Mare was transferred to its jurisdiction.

The list of the eparch (bishops) of the Greek Catholic Diocese of Oradea Mare is:[2]