The Eparchy of Parma (Latin: Eparchia Parmensis Ruthenorum) is an eparchy (diocese) of the Ruthenian Greek Catholic Church in the midwestern part of the United States.

Its episcopal seat is the Cathedral of St. John the Baptist in Parma, Ohio.

The metropolis is dependent upon the Roman Congregation for the Oriental Churches.

[1] As of 2014[update], the Byzantine Catholic Eparchy of Parma pastorally served 9,020 Eastern Catholics in Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri and Ohio in 28 parishes and 5 missions with 36 priests (diocesan), 16 deacons, 6 lay religious (6 sisters), 2 seminarians.

Ten parishes in the Youngstown, Ohio area are part of the Byzantine Catholic Archeparchy of Pittsburgh.