The Eparchy of Passaic (Latin: Eparchia Passaicensis Ruthenorum) is a Ruthenian Greek Catholic Church ecclesiastical territory or eparchy of the Catholic Church in the eastern United States. Its headquarters are at 445 Lackawanna Avenue, Woodland Park, New Jersey (formerly West Patterson). The Eparchy of Passaic is a suffragan eparchy in the ecclesiastical province of the metropolitan Archeparchy of Pittsburgh.