Éislek, also known by its German name Ösling, or English Oesling, is a region covering the northern part of both the Grand Duchy of Luxembourg and Eifelkreis Bitburg-Prüm, within the greater Ardennes area that also covers parts of Belgium and France. Éislek covers 32% of the territory of Luxembourg; to the south of Éislek lies Gutland, which covers the remaining 68% of the Grand Duchy as well as the southern part of the Eifelkreis Bitburg-Prüm.