| Jurisdiction: | Apostolic Exarchate |
| Łemkowszczyzna | |
| Latin: | Apostolica Exarchia Lemkovszczyznaensis Ucrainorum |
| Territory: | Southern-Eastern part of Poland |
| Province: | Immediately subject to the Holy See |
| Headquarters: | Rymanów-Zdrój (until April 30, 1938) since – Sanok |
| Catholics: | 127,580 (in 1943) |
| Sui Iuris Church: | Ukrainian Greek Catholic |
| Rite: | Byzantine |
| Established: | February 10, 1934 |
| Dissolved: | January 16, 1991 (in fact after 1947) |
| Cathedral: | The Holy Trinity Church in Sanok |
| Patron: | Immacolate Virgin Mary |
| Bishop: | Msgr. Oleksandr Malynovskyi (last Apostolic Exarch). |
| Bishop Title: | Exarch |
The Apostolic Exarchate of Łemkowszczyzna was a short-lived missionary pre-diocesan jurisdiction (exempt, i.e. immediately subject to the Holy See) of the Ukrainian Greek Catholic Church (Byzantine Rite in Ukrainian language), which was created as the Apostolic Administration of Łemkowszczyzna and then promoted as an Apostolic Exarchate. The erection of the jurisdiction was in response to the question of the national character of the Lemko people, a dispute between a pro-Ukrainian party and a Lemko nationalist party. The Eparchy of Przemyśl was pro-Ukrainian while the Polish government was opposed to Ukrainianization. Of a population of 140,000, more than 18,000 Lemko nationalists joined the Orthodox Church in opposition to the Przemyśl Eparchy. At the demand of the Polish government and to curtail losses to the Orthodox, the Holy See established a separate Apostolic Administration for the Lemkos. Poland's defeat and occupation in 1939 allowed for the appointment of the pro-Ukrainian Msgr. Oleksandr Malynovskyi as leader of the jurisdiction when a vacancy occurred in 1941.[1]