Oberlander Jews (Yiddish: אויבערלאנד, translit. Oyberland, "Highland"; Hebrew: גליל עליון, translit. Galil E'lion, "Upper Province") were the Jews who inhabited the northwestern regions of the historical Kingdom of Hungary, which are contemporary western Slovakia and Burgenland.
"Oberland", in this context, is a Hungarian-Jewish historiographic term, unrelated to the territory of Upper Hungary (Oberungarn, sometimes Oberland). Its origin lies in the immigration pattern of Jews into the country during the 18th century. Those arriving from Austria and Moravia settled in the adjacent counties of the northwest, mainly from Trencsén to Sopron, and gradually spread further; however, a large swath in the center of northern Hungary, between Szepes and Hajdú, remained closed for Jewish settlement until all residential limits were lifted in 1840. Thus, a demarcation line separated the Austrian and Moravian Jews from the Galician Jews who emigrated to the northeastern territories. Those west of it were known as "Oberlander" (highlanders), and the Galicians were "Unterlander Jews" (lowlanders). In rabbinic sources written in Hebrew, it was translated as the Upper and Lower Provinces (Galil E'lion, Galil Takhton). The designation was coined by the former. After 1840, the geographical boundary dividing Oberland and Unterland was the linguistic one between Western Yiddish and Middle ("Polish") Yiddish: it stretched from the Tatra Mountains, between Poprad and Liptovský Mikuláš, Slavošovce and Rožňava, continuing just north of Debrecen and south of Miskolc until reaching the Hungarian border in Cluj-Napoca. While sometimes applied to all western Jews, like those in Budapest and beyond, it came to denote the Orthodox ones who resided in contemporary Slovakia west of the boundary detailed above and in Burgenland. Their ancestors arrived in two waves: the first, comprising Austrians, came after the expulsion of the Jews from Vienna in 1670. They were welcomed by Paul I, Prince Esterházy, who allowed them to settle in Burgenland and to form the Seven Communities on his lands. Another, much larger wave entered Hungary in the wake of an Imperial decree from 1727 which limited the number of Jews allowed to marry in Moravia to 5,106. It remained in effect until 1848.