The Ukrainian (Greek) Catholic Eparchy of Olsztyn–Gdańsk is a suffragan eparchy in the ecclesiastical province of the metropolis of Przemyśl-Warsaw, which covers some part of Poland for the Ukrainian Greek Catholic Church parallel to the Latin hierarchy. It depends from the Roman Congregation for the Oriental Churches.

The Ukrainian Catholic Archeparchy of Przemyśl–Warsaw is an ecclesiastical territory or ecclesiastical province of the Ukrainian Greek Catholic Church — a particular Eastern Catholic Church, that is located in the south-eastern part of Poland. It was erected in 1996. Its Byzantine Rite services are conducted in the Ukrainian language. As a metropolitan see, it has two suffragan sees: Olsztyn–Gdańsk and Wrocław-Koszalin. The incumbent ordinary of the archeparchy is Eugeniusz Popowicz. It is assisted and protected by the Dicastery for the Eastern Churches in Rome. The cathedral church of the archeparchy is the Cathedral of St. John the Baptist, in the city of Przemyśl. Although the national capital of Warsaw was added to its title, there is no co-cathedral.