Since the Union of Uzhhorod in 1646 was unanimously accepted on the territory that includes present day eastern Slovakia, the history of the Slovak Greek Catholic Church was for centuries intertwined with that of the Ruthenian Greek Catholic Church.
Budući da je Unija iz Uzhhoroda 1646. jednoglasno prihvaćen na području koji uključuje danas istočnu Slovačku, povijest slovačke grkokatoličke Crkve je stoljećima isprepletena sa rusinskom katoličkom Crkvom.